tag:blogger.com,1999:blog-90248169412585184272024-03-12T15:57:57.360-07:00Solar Lantern ProjectSustainableLabhttp://www.blogger.com/profile/14267705294974520166noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-9024816941258518427.post-43772999733176198092008-04-29T13:30:00.000-07:002008-04-29T14:26:39.861-07:00Cooper Students Get Two Honorable Mentions EPA P3 4th Sustainable Design Expo<span style="font-family: trebuchet ms;">Congratulations to the students who participated in the </span><span style="font-family: trebuchet ms;">National Sustainable Desgin Expo in the National Mall in Washington, DC, this past weekend (4/20/2008-4/22/2008).<br /><br />http://www.zimbio.com/pictures/Cl2bavfr9y8/EPA+Holds+National+Sustainable+Design+Expo/VO1x_HjIYTf<br /></span><span style="font-family: trebuchet ms;"></span><br /><span style="font-family: trebuchet ms;">Prof. Cumberbatch and nine Cooper students traveled to Washington, DC, to share their work on two projects in Cooper's SEA2M3<span style="font-family: trebuchet ms;"> lab (SEA2M3 stands for: </span>Center for Sustainable Engineering, Art and Architecture -</span><span style="font-family: trebuchet ms;"> Materials, Manufacturing and Minimalism)</span><span style="font-family: trebuchet ms;">: the Solar Lantern, and the Indigenous Fluoride Filter.</span><br /><br /><span style="font-family: trebuchet ms;">Photos coming soon...</span><br /><br /><span style="font-family: trebuchet ms;">The following is a copy of Prof. Cumberbatch's email to the Cooper community about the design expo:<br /><br /></span>***************************************************************************<br />More Good News:<br /><br />At the EPA P3 4th Sustainable Design Expo in Washington DC (4/20 - 4/22),<br />the two Cooper Union projects both gained an Honorable Mention - according<br />to the EPA - a rating by the judges of >= 3.5 / 5.<br /><br /><a href="http://es.epa.gov/ncer/p3/project_websites/2008/2008awardwinners.html#honora" target="_blank">http://es.epa.gov/ncer/p3<wbr>/project_websites/2008/2008awa<wbr>rdwinners.html#honora</a>ble<br /><br /><br />The Development of an Indigenous Fluoride Filter (SU833538) -<br /><br />Lindsay Volk (ChE - Soph); Leah Freed (ChE - J); Varsha Venugopal (ChE - F);<br />Beatrix Ponce (ME - F)<br /><br /><br />Solar Lighting for Remote Rural Communities (SU833551) -<br /><br />David Berger (CE - J); James Stevenson (ChE - F): Nicholas Wong (ME - F);<br />Anurag Panda (EE - F); Ian Jacobs (ChE- J); Allan Ho (CE - J); Ryan Hogan<br />(Art - Soph)<br /><br /><br />Design Expo Information:<br /><br /><a href="http://es.epa.gov/ncer/p3/expo/index.html" target="_blank">http://es.epa.gov/ncer/p3/expo<wbr>/index.html</a><br /><br /><br /><br />The Cooper Lantern got a lot of media attention:<br /><a href="http://www.zimbio.com/pictures/Cl2bavfr9y8/EPA+Holds+National+Sustainable+Design+Expo/EWt7RBQwkgl" target="_blank">http://www.zimbio.com/pictures<wbr>/Cl2bavfr9y8/EPA+Holds+Nationa<wbr>l+Sustainable+De<br />sign+Expo/EWt7RBQwkgl</a><br /><br />In addition, the students were on German Public Radio, Russian TV, local<br />stations in the DC area etc etc.<br /><br /><a href="http://www.dradio.de/dlf/sendungen/umwelt/773440/" target="_blank">http://www.dradio.de/dlf<wbr>/sendungen/umwelt/773440/</a><br /><br /><br /><br />Both projects funded by the EPA under their EPA P3 Award Scheme - SU833538 &<br />SU833551<br /><br />Both Projects partially funded under NSF Grant OISE # 0553789<br /><br />Both projects also benefited substantially from very generous private<br />donations to the Center for Sustainable Engineering, Art and Architecture -<br />Materials, Manufacturing and Minimalism. Without these donations, it would<br />not have been possible to get this far.<br /><br />Toby<br /><span style="color:#888888;">--<br />Toby Cumberbatch (<a href="mailto:toby@cooper.edu">toby@cooper.edu</a>)<br />Electrical Engineering Dept,<br />Cooper Union,<br />51 Astor Place, New York, NY 10003</span>SustainableLabhttp://www.blogger.com/profile/14267705294974520166noreply@blogger.com4tag:blogger.com,1999:blog-9024816941258518427.post-50203636146675424122008-02-22T13:59:00.001-08:002008-04-22T12:07:38.359-07:00High-Quality Photos of the Solar Lanterns<span style="font-family:trebuchet ms;">These are closeups of some of the different lantern designs that were distributed in Ghana this January. Below each photo is the lantern ID, and the name of the designer.<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGPaEX_-mImzOs4LqK_I83Hbh_ACbVav-TmfRBKQ_RLko0ZBKJsmbYOxt_w8bPMJMTtagAainmJLZPU_XnANeCBW7Q-NbiL1xU0sdEVh1FQk4f9eNRCtFa-4_Vx_ZXkGaYWiUYimiANMc/s1600-h/Blue1.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGPaEX_-mImzOs4LqK_I83Hbh_ACbVav-TmfRBKQ_RLko0ZBKJsmbYOxt_w8bPMJMTtagAainmJLZPU_XnANeCBW7Q-NbiL1xU0sdEVh1FQk4f9eNRCtFa-4_Vx_ZXkGaYWiUYimiANMc/s400/Blue1.jpg" alt="" id="BLOGGER_PHOTO_ID_5169927968776012818" border="0" /></a><br /><div style="text-align: center;"><span style="font-family:trebuchet ms;">Blue#1<br />Dave Berger<br /></span><span style="font-family:trebuchet ms;">--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjheC5kwoJombmxB8XgkkSA5tEwsT5Pf736haukVN_SqjoVMaXfUT6XklKPiIJPZM2_J1lqBt9l4F3hW3yJbLa0NTTimrLFInf_TrVjDXPst1Z63Uy3EQQ1ib4iZeWs2WKChJa0SMSlhGM/s1600-h/Blue1-brick.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjheC5kwoJombmxB8XgkkSA5tEwsT5Pf736haukVN_SqjoVMaXfUT6XklKPiIJPZM2_J1lqBt9l4F3hW3yJbLa0NTTimrLFInf_TrVjDXPst1Z63Uy3EQQ1ib4iZeWs2WKChJa0SMSlhGM/s400/Blue1-brick.jpg" alt="" id="BLOGGER_PHOTO_ID_5169928067560260642" border="0" /></a><br /><div style="text-align: center;"><span style="font-family:trebuchet ms;">Blue#1<br />Dave Berger<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">The shadows cast inside the diffuser are from the heads of the screws</span><span style="font-family:trebuchet ms;"> that fasten the LED in place; among other issues, this is being addressed in the next design phase.<br /></span></div> </div> <div style="text-align: center;"><span style="font-family:trebuchet ms;">--------</span></div><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBae9iRW4uqTeKYt85XWJxm6yH81a3whTLRjL7F_KhCrGoIi84U6ni4krhLJXw2PZyIy-a3XZugCqu-DDE3DWt-qvxwoy5_Z18rOwD8qBu8UvGyU331GOL6IFNQZs_Q_hS_kNbYWGjSfk/s1600-h/Red2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBae9iRW4uqTeKYt85XWJxm6yH81a3whTLRjL7F_KhCrGoIi84U6ni4krhLJXw2PZyIy-a3XZugCqu-DDE3DWt-qvxwoy5_Z18rOwD8qBu8UvGyU331GOL6IFNQZs_Q_hS_kNbYWGjSfk/s400/Red2.jpg" alt="" id="BLOGGER_PHOTO_ID_5169928557186532482" border="0" /></a><div style="text-align: center;"><span style="font-family:trebuchet ms;">Red#2<br />Nick Wong<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">This plastic box was originally a container for dry-seaweed, bought from the local Japanese supermarket. This was the first of the "final" lanterns that we built for the January trip to Ghana. The box happened to be just the right size to fit the battery; the square shape made it easy to mount the sheet metal control panel. This gooseneck was salvaged from an old desklamp, but in Red#1 (sorry, no photo yet), the gooseneck was homemade using flexible tubing and romex.</span><br /></div><span style="font-family:trebuchet ms;">--------</span></div><br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6jWxpk29jQYz4fesCcJ5RDBg7q-0DVzBzFqhsFqxfviMvPFkJQdS66FtE8e8M_CweP-hIzECmG3OpLs8B5l54d1K9Bn22cGK41Mahf4PAkX_1nFyZ3f4ucLFs24Cs-1hwQR2SWgwQT5A/s1600-h/DaveLanterns-Blue1Blue4Blue2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6jWxpk29jQYz4fesCcJ5RDBg7q-0DVzBzFqhsFqxfviMvPFkJQdS66FtE8e8M_CweP-hIzECmG3OpLs8B5l54d1K9Bn22cGK41Mahf4PAkX_1nFyZ3f4ucLFs24Cs-1hwQR2SWgwQT5A/s400/DaveLanterns-Blue1Blue4Blue2.jpg" alt="" id="BLOGGER_PHOTO_ID_5169928441222415474" border="0" /></a><span style="font-family:trebuchet ms;">Blue#1,#2,#4<br />Dave Berger</span><br /></div><div style="text-align: center;"><span style="font-family:trebuchet ms;">--------<br /><br /></span></div><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibk6NBzZUkCSuKKBY-Fir9tBHT-ew5y7bT2WjoHozGxKmMZfzA0cI5IiS7PDCtq91W3tHwWelv_wgmeMgoWNTjs1ULo6mLVe1k3my3GzqKxYiT-qWn5ZVHC89HoQhmIZPdib5o51mFHS0/s1600-h/Blue4-Landscape.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibk6NBzZUkCSuKKBY-Fir9tBHT-ew5y7bT2WjoHozGxKmMZfzA0cI5IiS7PDCtq91W3tHwWelv_wgmeMgoWNTjs1ULo6mLVe1k3my3GzqKxYiT-qWn5ZVHC89HoQhmIZPdib5o51mFHS0/s400/Blue4-Landscape.jpg" alt="" id="BLOGGER_PHOTO_ID_5169928273718690898" border="0" /></a><br /><div style="text-align: center;"><span style="font-family:trebuchet ms;">Blue#4<br />Dave Berger</span><br /></div> <div style="text-align: center;"><span style="font-family:trebuchet ms;">--------<br /><br /></span></div><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq3uc_8gf78TEOeTE1ggaXYpO4ueFFisyQknWk5iN4qNsREmEdRO7yr9Jp_An9i7MIzkc95n7HrLGj9WAh_5a0AY7IXQVYzXEfc2Rkqr0NKfMqya0PBvbYHpin_mEwzfJN-BfAJ7ke5BI/s1600-h/Blue3.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq3uc_8gf78TEOeTE1ggaXYpO4ueFFisyQknWk5iN4qNsREmEdRO7yr9Jp_An9i7MIzkc95n7HrLGj9WAh_5a0AY7IXQVYzXEfc2Rkqr0NKfMqya0PBvbYHpin_mEwzfJN-BfAJ7ke5BI/s400/Blue3.jpg" alt="" id="BLOGGER_PHOTO_ID_5169928119099868210" border="0" /></a><br /><div style="text-align: center;"><span style="font-family:trebuchet ms;">Blue#3<br />Allan Ho<br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;"><br />The black rubber tube coming out the side is a flexible handle (not wings).</span><br /></div> </div> <div style="text-align: center;"><span style="font-family:trebuchet ms;">--------<br /><br /></span></div><div style="text-align: center;"><span style="font-family:trebuchet ms;"></span><div style="text-align: left;"><span style="font-family:trebuchet ms;"><br /></span><span style="font-family:trebuchet ms;">For more information, please contact Professor Toby Cumberbatch of Cooper Union:<br />tcumberbatch (at) mac.com</span></div></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBae9iRW4uqTeKYt85XWJxm6yH81a3whTLRjL7F_KhCrGoIi84U6ni4krhLJXw2PZyIy-a3XZugCqu-DDE3DWt-qvxwoy5_Z18rOwD8qBu8UvGyU331GOL6IFNQZs_Q_hS_kNbYWGjSfk/s1600-h/Red2.jpg"><br /></a>SustainableLabhttp://www.blogger.com/profile/14267705294974520166noreply@blogger.com5tag:blogger.com,1999:blog-9024816941258518427.post-6829996176358730212008-02-21T10:03:00.000-08:002008-04-22T12:07:04.791-07:00Photos from Professor Cumberbatch's Trip to Ghana, January 2008<span style="font-family:trebuchet ms;">Prof. Cumberbatch's trip to Ghana this January was a huge success. The charging station installation from last summer is still intact, and the villagers are taking excellent care of the equipment.<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAo6cRf0HyVnJWkgcsQ7sc-6waN6g_hX47EdXO9bKtLzSyDfbqMWyS9nOpq8ig1tSop3YBECxTpoWb7vKAHQBs8iKqsZgqawl5ABtKGHnWnHjvoOhsGKjdYpIaD_epu1Guvh6WLFNwWM8/s1600-h/CleaningTheSolarPanel.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAo6cRf0HyVnJWkgcsQ7sc-6waN6g_hX47EdXO9bKtLzSyDfbqMWyS9nOpq8ig1tSop3YBECxTpoWb7vKAHQBs8iKqsZgqawl5ABtKGHnWnHjvoOhsGKjdYpIaD_epu1Guvh6WLFNwWM8/s400/CleaningTheSolarPanel.jpg" alt="" id="BLOGGER_PHOTO_ID_5174297274171058578" border="0" /></a><br /><span style="font-family:trebuchet ms;">The three lanterns delivered by Dave Berger and Yoorhim Choi in the Summer of 2007 are still working, and being shared by all 300 villagers! Prof. Cumberbatch delivered seven new and improved lanterns (see descriptions and photos in previous post).<br /><br />Sorry for the delay in posting these photos from Professor Cumberbatch's trip. More photos to follow soon!<br /><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzRVl8Ad8ut3aIUB9H4blMYSDzbug3khITtL8bPXjPpWGgRZVrB-BfAGswMHk_TnW3MrdwG_MayW8IwluP-rQBWW4WRBFVWfAsCcHV2Qz_EbALpymKjeeN6RbHvNvgASib_ix7JNIdVsc/s1600-h/Ghana_charging_station_1.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzRVl8Ad8ut3aIUB9H4blMYSDzbug3khITtL8bPXjPpWGgRZVrB-BfAGswMHk_TnW3MrdwG_MayW8IwluP-rQBWW4WRBFVWfAsCcHV2Qz_EbALpymKjeeN6RbHvNvgASib_ix7JNIdVsc/s400/Ghana_charging_station_1.jpg" alt="" id="BLOGGER_PHOTO_ID_5169496367512437714" border="0" /></a><span style="font-family:trebuchet ms;">The charging station with some new equipment installed by</span><br /><span style="font-family:trebuchet ms;">Prof. Cumberbatch and the Nambeg villagers this January.</span><br /></div><span style="font-family:trebuchet ms;"><br /></span><span style="font-family:trebuchet ms;">From left to right: the wooden box with the "caution" sticker is the power distribution box (installed last summer, along with the solar panels and the car battery). The large black cables coming into this box are from the solar panels (on the roof) and the "Hankook" car battery sitting on the table. The three new lanterns sitting on this box are being charged up. The three lanterns sitting on the other side of the table are the old prototype from last summer. Lastly, the charging circuits are sitting next to the old lanterns, but are hidden from view by the car battery.</span><br /><span style="font-family:trebuchet ms;"><br />In all of the following photos, the lighting in the "well-lit" version is from the camera flash. The lighting in the dimly lit versions is from the lantern only.<br /><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKjTVEFZesQCtHfeTK5u_JEOvxBuUx-IS8YkcN-S42MuOOoE_9jOTn9zb4OpGSnN_gYjYKtsKtYY1HNXy7_nhK6g7Rz3Dxd-EO9tuEtGzC56bPRmlY6UCG0_QDKoDxBnNMVrgNTGmioV4/s1600-h/ChargingStation-Children-Flash.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKjTVEFZesQCtHfeTK5u_JEOvxBuUx-IS8YkcN-S42MuOOoE_9jOTn9zb4OpGSnN_gYjYKtsKtYY1HNXy7_nhK6g7Rz3Dxd-EO9tuEtGzC56bPRmlY6UCG0_QDKoDxBnNMVrgNTGmioV4/s400/ChargingStation-Children-Flash.jpg" alt="" id="BLOGGER_PHOTO_ID_5169958587597866210" border="0" /></a><span style="font-family:trebuchet ms;">At the charging station<br />--------<br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinQ5fMJzlE693trHNTIES4MiejL09gEbk1B_olXt50GGewslFzSqX7bDo2Nf94HuLsUfrFr_onMGiqNVuAm6NZvPfgoql2cI99xJPnsrEQLwYwfw5J-u56EkrMUJWpL-KdYPHOxkqGiF4/s1600-h/ChargingStation-Children-Dark.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinQ5fMJzlE693trHNTIES4MiejL09gEbk1B_olXt50GGewslFzSqX7bDo2Nf94HuLsUfrFr_onMGiqNVuAm6NZvPfgoql2cI99xJPnsrEQLwYwfw5J-u56EkrMUJWpL-KdYPHOxkqGiF4/s400/ChargingStation-Children-Dark.jpg" alt="" id="BLOGGER_PHOTO_ID_5169957440841598162" border="0" /></a><span style="font-family:trebuchet ms;">At the charging station<br />(photo taken without camera flash)<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAMb7n71-sl-bXmXvJrruQf_gM5DVslEVjTKhW4ZfwFISkag-PnXKutM4FcoaMIdxBeCucMhbl5vUD1arA4L1nSUBNkV0pyw7ZwoKZ1m-x5l9RzaZbp1Gqs8UMcPGw7saM4XO_MxCE4-s/s1600-h/PotteryMakerAndChild-Flash.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAMb7n71-sl-bXmXvJrruQf_gM5DVslEVjTKhW4ZfwFISkag-PnXKutM4FcoaMIdxBeCucMhbl5vUD1arA4L1nSUBNkV0pyw7ZwoKZ1m-x5l9RzaZbp1Gqs8UMcPGw7saM4XO_MxCE4-s/s400/PotteryMakerAndChild-Flash.jpg" alt="" id="BLOGGER_PHOTO_ID_5169958828116034818" border="0" /></a><br /><span style="font-family:trebuchet ms;">Pottery maker using a solar lantern<br />--------<br /></span></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEje4NeXMa-rfxed0ysKj5iXPMh7TEnUfgGt72Kmw8uQsCXnZRQYhynrQ8i_Y-qUBazuxbJ5x_NyXe2UXafLDp7v6_WgEDrFCSZOpE8JEPYbYmTopTT98j_IEBbAv3r-PVZSmzF0uE61fpg/s1600-h/Ghana_lantern_flash_1.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEje4NeXMa-rfxed0ysKj5iXPMh7TEnUfgGt72Kmw8uQsCXnZRQYhynrQ8i_Y-qUBazuxbJ5x_NyXe2UXafLDp7v6_WgEDrFCSZOpE8JEPYbYmTopTT98j_IEBbAv3r-PVZSmzF0uE61fpg/s400/Ghana_lantern_flash_1.jpg" alt="" id="BLOGGER_PHOTO_ID_5169497063297139682" border="0" /></a><span style="font-family:trebuchet ms;">Pottery maker using a kerosene lamp</span><br /><span style="font-family:trebuchet ms;"> </span><span style="font-family:trebuchet ms;"> --------</span><br /></div><br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhop4dSY8nmfYTy82HmYk0dhDWxZinNEVdc2509dVd9AWrXBss1IuiGsjXdpPkl4sVnB4R0H_e65-cnuXYm4CXzOo1UOfUm9t_gS2Uu6pqwoSm6RgnICD0gWdaj_osw7mGUi7bVcT3BKY/s1600-h/Ghana_old_lantern_1.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhop4dSY8nmfYTy82HmYk0dhDWxZinNEVdc2509dVd9AWrXBss1IuiGsjXdpPkl4sVnB4R0H_e65-cnuXYm4CXzOo1UOfUm9t_gS2Uu6pqwoSm6RgnICD0gWdaj_osw7mGUi7bVcT3BKY/s400/Ghana_old_lantern_1.jpg" alt="" id="BLOGGER_PHOTO_ID_5169497200736093186" border="0" /></a><span style="font-family:trebuchet ms;">Same photo as above, taken without flash<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi155m9M3mKtXl8cow0SvBidNfCinYYq4qSPSFYEkM3Dq94Kad7YNGCKXA4YOsVkBNirxl2Lq-GQToABL-4sZehGJmbZtjBMH-SfBxAH_srOuQFSeNXyw8Wbcotn7pYcBBUpgwpEhLuI-8/s1600-h/PotteryMaker-Flash3.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi155m9M3mKtXl8cow0SvBidNfCinYYq4qSPSFYEkM3Dq94Kad7YNGCKXA4YOsVkBNirxl2Lq-GQToABL-4sZehGJmbZtjBMH-SfBxAH_srOuQFSeNXyw8Wbcotn7pYcBBUpgwpEhLuI-8/s400/PotteryMaker-Flash3.jpg" alt="" id="BLOGGER_PHOTO_ID_5169958995619759394" border="0" /></a><span style="font-family:trebuchet ms;">Same pottery maker, this time using a solar lantern<br />designed by Dave Berger<br /></span><span style="font-family:trebuchet ms;"> </span><span style="font-family:trebuchet ms;"> --------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfiRrMDHr_teopmgz7KAN-7bsiqCJd6fDOmUP2jeodW7vxozARPXrqu5Px7EZ24hAMMyX0ofRI4o6LIHJf71d3N5wO1ZIbbrxBuu_E6SdjUjNIXnAHSR03BpBz0U5RFSp9vp5klJpInWc/s1600-h/PotteryMaker-SolarLantern2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfiRrMDHr_teopmgz7KAN-7bsiqCJd6fDOmUP2jeodW7vxozARPXrqu5Px7EZ24hAMMyX0ofRI4o6LIHJf71d3N5wO1ZIbbrxBuu_E6SdjUjNIXnAHSR03BpBz0U5RFSp9vp5klJpInWc/s400/PotteryMaker-SolarLantern2.jpg" alt="" id="BLOGGER_PHOTO_ID_5169964914084693314" border="0" /></a><span style="font-family:trebuchet ms;">Photo of pottery maker using a solar lantern, taken without flash</span><br /></div><div style="text-align: center;"><span style="font-family:trebuchet ms;"> --------<br /><br /></span></div><div style="text-align: left;"><span style="font-family:trebuchet ms;"><br /></span><span style="font-family:trebuchet ms;">For more information, please contact Professor Toby Cumberbatch of Cooper Union:<br />tcumberbatch (at) mac.com</span></div><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjzRVl8Ad8ut3aIUB9H4blMYSDzbug3khITtL8bPXjPpWGgRZVrB-BfAGswMHk_TnW3MrdwG_MayW8IwluP-rQBWW4WRBFVWfAsCcHV2Qz_EbALpymKjeeN6RbHvNvgASib_ix7JNIdVsc/s1600-h/Ghana_charging_station_1.jpg"><br /></a></div>SustainableLabhttp://www.blogger.com/profile/14267705294974520166noreply@blogger.com6tag:blogger.com,1999:blog-9024816941258518427.post-16697604036585763452008-01-11T15:42:00.001-08:002008-08-27T06:25:46.402-07:00Lanterns and Chargers Finished<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrDKaI9VXh9yJdsZT-QJ4uBrTgeTjZNrEJaB5322KDyDjWvOAqMmPnFQ5z1lcjS0CKFrSN7qtCWqsHfgJkkm-apFZ-fe4CI5cC7H2Wo_WVFIew5e99nRDGdEQek5TAjImc6yv6w5aDupA/s1600-h/VotingTree-Summer2007.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrDKaI9VXh9yJdsZT-QJ4uBrTgeTjZNrEJaB5322KDyDjWvOAqMmPnFQ5z1lcjS0CKFrSN7qtCWqsHfgJkkm-apFZ-fe4CI5cC7H2Wo_WVFIew5e99nRDGdEQek5TAjImc6yv6w5aDupA/s400/VotingTree-Summer2007.jpg" alt="" id="BLOGGER_PHOTO_ID_5174321351757720066" border="0" /></a><span style="font-family:trebuchet ms;">Nambeg, Ghana - Summer of 2007:<br />VIllagers gathering to vote on whether to work<br />with Cooper Union on the Solar Lantern Project<br /></span></div><div style="text-align: center;">--------</div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjb0lqNSb0U_tNEgT0yOjHbfCIEtTer-qpYW1GdIwl8CmXuk-xKx8SqF9Me8u0ySaEmvkJS0u_g-LokLZwhW5baILUWVAtkZ3Zl-mWpcT_Pdo_taLNeUv3rFo9PJyyg8Jaoo1S1gIJ3IQM/s1600-h/VillagersVotingForSolarPower.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjb0lqNSb0U_tNEgT0yOjHbfCIEtTer-qpYW1GdIwl8CmXuk-xKx8SqF9Me8u0ySaEmvkJS0u_g-LokLZwhW5baILUWVAtkZ3Zl-mWpcT_Pdo_taLNeUv3rFo9PJyyg8Jaoo1S1gIJ3IQM/s400/VillagersVotingForSolarPower.jpg" alt="" id="BLOGGER_PHOTO_ID_5174321287333210610" border="0" /></a><span style="font-family:trebuchet ms;">It's unanimous!</span><span style="font-family:trebuchet ms;"></span><br /><span style="font-family:trebuchet ms;"> </span></div> <div style="text-align: center;">--------</div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0DewwNHOpxNPaGhvpXlQv-OiBEv3sujXSSePNd3nOLc_23U6BjlOXNF7VtXerS14_-WwOaL7sGQCW1JnrNTv4X4N2J1PIyqSW2T0mOo4ye9YCRNquinYXc5II4Esq62iaUz1v2-WHIP8/s1600-h/VillagersAndYoorhim-Summer2007.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0DewwNHOpxNPaGhvpXlQv-OiBEv3sujXSSePNd3nOLc_23U6BjlOXNF7VtXerS14_-WwOaL7sGQCW1JnrNTv4X4N2J1PIyqSW2T0mOo4ye9YCRNquinYXc5II4Esq62iaUz1v2-WHIP8/s400/VillagersAndYoorhim-Summer2007.jpg" alt="" id="BLOGGER_PHOTO_ID_5174321222908701154" border="0" /></a><span style="font-family:trebuchet ms;">Yoorhim Choi and Nambeg Villagers, Summer 2007</span><br /></div><span style="font-family:trebuchet ms;"> </span> <div style="text-align: center;">--------</div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiV1tdUTa0_FwY4jjSdTr7oKHSsuxcvlcV9aTlGhjfDeUo9Hqbwj_ZX5EPHsiOZBilmPpagrmQnr4HzYsTFErH0fK5cHhGqmuWmZGaywBhf7QiTzuIUTJVhjdjwsVGXnPX8iaYNQSYXg3E/s1600-h/EID101-Fall2006.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiV1tdUTa0_FwY4jjSdTr7oKHSsuxcvlcV9aTlGhjfDeUo9Hqbwj_ZX5EPHsiOZBilmPpagrmQnr4HzYsTFErH0fK5cHhGqmuWmZGaywBhf7QiTzuIUTJVhjdjwsVGXnPX8iaYNQSYXg3E/s400/EID101-Fall2006.jpg" alt="" id="BLOGGER_PHOTO_ID_5174319552166422978" border="0" /></a><span style="font-family:trebuchet ms;">Prof. Cumberbatch's Fall 2006 "EID 101: Engineering Design and Problem Solving" Class<br />This is the group of freshman that began the Solar Lantern Project<br /></span></div><div style="text-align: center;">--------</div><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;"><br /></span></span></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-y7yMizObk_c88QzGXtyoDqpbOO113BmA1MGL1-za-rbS0j9fulXBegUClgGuEjdeEkOcxmAdjGsGTZksTaQO6kMZ7DG1r_k_v3XcL6NOHMXi_dmgyMsenODvYBVbJkwhMae_hUjUCpU/s1600-h/EID101-Fall2007.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-y7yMizObk_c88QzGXtyoDqpbOO113BmA1MGL1-za-rbS0j9fulXBegUClgGuEjdeEkOcxmAdjGsGTZksTaQO6kMZ7DG1r_k_v3XcL6NOHMXi_dmgyMsenODvYBVbJkwhMae_hUjUCpU/s400/EID101-Fall2007.jpg" alt="" id="BLOGGER_PHOTO_ID_5174319749734918610" border="0" /></a><span style="font-family:trebuchet ms;">...and the Fall 2007 EID 101 Class</span><br /></div><div style="text-align: center;">--------</div><br /><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">That brings us to the present: January 11, 2008. We -- a collection of students who've been to Ghana, former EID 101 students, former sustainable design students, and general Cooper students (and alumni!) -- worked through the holidays, and built eight lanterns and six chargers, just in time for Professor Cumberbatch to bring with him to Ghana. It's been a long month with no rest. But it was all worth it.</span><br /><br /><span style="font-family:trebuchet ms;">Why we started this Blog:</span> <span style="font-family:trebuchet ms;">To share photos and to document this project. We hope to add to this as we continue to improve the lanterns, and receive feedback from the villagers in Nambeg, Ghana. This blog is for all the people involved who didn't get to see the finished lanterns in person:<br /></span></span></span><ul><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the freshman students who got their butts kicked (welcome to Cooper) - see Fall 2007 photo above<br /></span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the students who started us on bamboo and lead-acid batteries last year - see Fall 2006 photo above<br /></span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the students who've been to Ghana and worked with the villagers - see Summer 2007 photos above<br /></span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the Cooper security guards who kept an eye out for our packages and kept the building open EVERY day</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">all the friends and family that put up with our absence throughout holidays and birthdays</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Wendy Lee and Yunglin Gazes who came after work and on weekends to help out</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Dr. Matt Foster who took time off from work to help out</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Sarah Lerner who made sure we got all our last-minute shipments</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Glenn Gross who gave us circuit advice and unfettered access to the shop materials and tools</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the folks at Heatron who donated the ultra-bright LEDs (that REALLY saved the project -- thanks again Jason!)<br /></span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the EPA for materials funding</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the NSF for funding our students to go to Ghana<br /></span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">the regular folk who donate money to Cooper to keep these projects alive (by covering costs that grants don't)<br /></span></span></span></li></ul><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">This is starting to sound like a list of acknowledgements, so we better include a few more people, even though they did see the finished lanterns:</span></span></span><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;"></span></span></span><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;"><br /></span></span></span><ul><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Dave Berger, Nick Wong, Allan Ho, John Tuck, Alex Fazio, and Sara Foley -- Cooper students who helped out, not for credit, but just because it was a good project for a good cause.</span></span></span></li><li><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Dr. Nadia Pervez (the word "we" in this blog = Nadia Pervez + Mike Gazes) without whom I'd fall flat on my face.<br /></span></span></span></li><li style="text-align: left;"><span style="font-size:100%;"><span style="font-family:verdana;"><span style="font-family:trebuchet ms;">Prof. Toby Cumberbatch who leaves for Ghana in two days to deliver the lanterns and carry-on with the real work. His commitment to improving living conditions in the third world is both inspiring and infectious.</span></span></span></li></ul><div style="text-align: center;">--------<br /><br /></div><span style="font-size:100%;"><span style="font-family:verdana;"> <span style="font-family:trebuchet ms;">Five of us drove up (thanks Matt) to Prof. Cumberbatch in Connecticut yesterday. Here we are in his living room with the eight lanterns soon to be in circulation in the village of Nambeg.</span><br /><br /></span></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiG3enEfE87njq1eFQitgt1pRW-V-1Spkia8Wgo6unA8QfYLJoPmhPCA_j8-TVIdHI-N3uY_vg3CdF4tJybHxf6dL0LQlkZA0Udb3JT7t45A4tfvnQ2XuvMyCZh9YMvd9xw0W9OWmfShxc/s1600-h/AllOfUs.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiG3enEfE87njq1eFQitgt1pRW-V-1Spkia8Wgo6unA8QfYLJoPmhPCA_j8-TVIdHI-N3uY_vg3CdF4tJybHxf6dL0LQlkZA0Udb3JT7t45A4tfvnQ2XuvMyCZh9YMvd9xw0W9OWmfShxc/s400/AllOfUs.jpg" alt="" id="BLOGGER_PHOTO_ID_5154369779756907826" border="0" /></a><span style="font-family:trebuchet ms;">(Left to Right): Dave Berger, Mike Gazes,<br />Dr. Toby Cumberbatch, Allan Ho, Dr. Nadia Pervez<br />(Matt's taking the photo)<br /></span></div><div style="text-align: center;">--------<br /><br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj12CBc5Kpt4s0fh21ZGWYI61BfWfxODurpIXctZbbHQTe57E21BBQuWU4Ikude5Rck_SkcUfNjhW48q-8xE1m3DZA8NMGbdmN9UrOX7XA2BfVtmFVsevh90YA3aPXxaqyPQnn45Fqldk8/s1600-h/AllTheLanterns.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj12CBc5Kpt4s0fh21ZGWYI61BfWfxODurpIXctZbbHQTe57E21BBQuWU4Ikude5Rck_SkcUfNjhW48q-8xE1m3DZA8NMGbdmN9UrOX7XA2BfVtmFVsevh90YA3aPXxaqyPQnn45Fqldk8/s400/AllTheLanterns.jpg" alt="" id="BLOGGER_PHOTO_ID_5154385915949038914" border="0" /></a><span style="font-family:trebuchet ms;">A closer look at the eight lanterns (and the professor's carpet).<br />The barely visible mess of cables on the bottom right are<br />the lantern battery chargers, and the parts for making more lanterns in Ghana.<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEipqDJWb8z3DD0VwEMbCsL2WX-zMZ4BqNJou5mwCW8JKxXznW6TFd8AKcm9FlbwLEZRXvf6drVsLkDsmdySm6Cd3lTRqJ3UenxsLtWxemaxonK3OLryDaMBBJaLl13XISFGGl0FyA8pLCQ/s1600-h/AllanBuildingBlue3.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEipqDJWb8z3DD0VwEMbCsL2WX-zMZ4BqNJou5mwCW8JKxXznW6TFd8AKcm9FlbwLEZRXvf6drVsLkDsmdySm6Cd3lTRqJ3UenxsLtWxemaxonK3OLryDaMBBJaLl13XISFGGl0FyA8pLCQ/s400/AllanBuildingBlue3.jpg" alt="" id="BLOGGER_PHOTO_ID_5154398324109557090" border="0" /></a><span style="font-family:trebuchet ms;">Allan building Blue3 in the lab<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">"Blue3" is the name of Allan's lantern. The "traditional" cylindrical-looking lanterns were named Blue1 through Blue5. The lanterns with the desk-lamp style gooseneck were labeled Red1 through Red3. These lantern "names" will help us track the performance and popularity of each design once they're in circulation among the Ghanaian villagers.<br /><br />One thing that all the lantern designs have in common is the controls: a push-button on/off switch, a knob to control brightness, and a jack for recharging the lantern's battery.</span><br /></div><span style="font-family:trebuchet ms;">--------</span><br /></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj47FIuEE5y9mm59seSbMXAuJm6t8KKDKverSYx9DwhQtEYue7UUNInsorkl_wCWWO32OOua9rDKqizR-X9eo1nmm1rPbHq34vfQVO9r3aBTX0GvhupnZz0D0B4IEVGuEAt-juceCRR574/s1600-h/Dave&HisLanterns.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj47FIuEE5y9mm59seSbMXAuJm6t8KKDKverSYx9DwhQtEYue7UUNInsorkl_wCWWO32OOua9rDKqizR-X9eo1nmm1rPbHq34vfQVO9r3aBTX0GvhupnZz0D0B4IEVGuEAt-juceCRR574/s400/Dave&HisLanterns.jpg" alt="" id="BLOGGER_PHOTO_ID_5154397520950672722" border="0" /></a><span style="font-family:trebuchet ms;">Dave and his lanterns<br />(left to right: Blue4, Blue1, and Blue2)<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHOYPaCb3Sx4P2YMANmRg7Nt3HwsNtNUSyUiYL7IM1XwqQ01gnxPHFhbGsZdMnwezALTucU2S318ap0j9UojzeGpsTqz0Pgw7ZNJjkMDXEWLnOAHNzQNUZs7xnr16_qjrA7sBV1UOl5zc/s1600-h/Blue5-Front.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHOYPaCb3Sx4P2YMANmRg7Nt3HwsNtNUSyUiYL7IM1XwqQ01gnxPHFhbGsZdMnwezALTucU2S318ap0j9UojzeGpsTqz0Pgw7ZNJjkMDXEWLnOAHNzQNUZs7xnr16_qjrA7sBV1UOl5zc/s400/Blue5-Front.jpg" alt="" id="BLOGGER_PHOTO_ID_5154705384206450114" border="0" /></a><span style="font-family:trebuchet ms;">Dr. Nadia Pervez holding her creation, Blue5<br />(a.k.a. Purple1: a cross between the Blue and Red designs)<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVCQAlWkmztW-2pJguG0qR8LvOdPfoww-lJa-mx16oh5G56RuXY4l_qTlifmysp7_lSD3S9iRcR7FLxqbbadd6Tr4qkDVvPnPecqMvEek4lY6NB5HWCE48QTv2LT0LJiEGnRcMQzWCBeM/s1600-h/Blue2andRed2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVCQAlWkmztW-2pJguG0qR8LvOdPfoww-lJa-mx16oh5G56RuXY4l_qTlifmysp7_lSD3S9iRcR7FLxqbbadd6Tr4qkDVvPnPecqMvEek4lY6NB5HWCE48QTv2LT0LJiEGnRcMQzWCBeM/s400/Blue2andRed2.jpg" alt="" id="BLOGGER_PHOTO_ID_5154711019203542498" border="0" /></a><span style="font-family:trebuchet ms;">Early versions of Blue2 and Red2<br />(before we discovered the amazing light distribution properties of paper plates)<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">Some high-quality photos of the finished versions of these lanterns is posted in the February 22, 2008 blog.</span><br /></div><span style="font-family:trebuchet ms;">--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxV-qXlTgEpzn5HdZ2MNg2Xonx5aSG1aq066PKu60gNZwoJEgNpRKvTHw5dCzWBsppNPyrUV7nyzdx-GMSrBxZYyu-C98R5kxEjuThqZjj_LCRfdtOMMys5aUhnSd7FSz2OttWgXGX4Zk/s1600-h/InsideLantern.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxV-qXlTgEpzn5HdZ2MNg2Xonx5aSG1aq066PKu60gNZwoJEgNpRKvTHw5dCzWBsppNPyrUV7nyzdx-GMSrBxZYyu-C98R5kxEjuThqZjj_LCRfdtOMMys5aUhnSd7FSz2OttWgXGX4Zk/s400/InsideLantern.jpg" alt="" id="BLOGGER_PHOTO_ID_5174310738893531554" border="0" /></a><span style="font-family:trebuchet ms;">Inside view of Blue#2<br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">We tried several different methods for securing the battery, and mounting the printed circuit board. In this photo, the PCB is screwed to the inner wall of the bamboo. The battery is held in place by a long bolt with washers. The bolt presses the top of the battery down, and the washers clamps the battery's sides.<br /><br />In Blue#1 and Blue#4, the PCB is mounted to the underside of a clay disc, with the LED mounted to the other side. In Red#3 (the PVC lantern), the battery is suspended in place by fishing line.<br /><br />For the next phase of lanterns, we plan to mount the PCB directly to the light distribution system, creating a circuit-LED-optics module that is adaptable to any lantern housing and design.<br /></span></div><span style="font-family:trebuchet ms;">--------<br /></span></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: center;"><span style="font-family:trebuchet ms;"><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvdFUHvaHYUecd_nDa5Y59W785rIhedtjiWqCgre9-yhiSXc52oj1E_MDHc8oMmCtvowWcRt5WDr37mthSnb-Inwp1b4eR2roJm9Znn5uJJJlJBkGvpwfRlUN3dgSJ3gl-5vsgp_c_VeM/s1600-h/AlexandNick-ShoulderLamp.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvdFUHvaHYUecd_nDa5Y59W785rIhedtjiWqCgre9-yhiSXc52oj1E_MDHc8oMmCtvowWcRt5WDr37mthSnb-Inwp1b4eR2roJm9Znn5uJJJlJBkGvpwfRlUN3dgSJ3gl-5vsgp_c_VeM/s400/AlexandNick-ShoulderLamp.jpg" alt="" id="BLOGGER_PHOTO_ID_5154399500930596210" border="0" /></a><span style="font-family:trebuchet ms;">Alex and Nick working on Red3<br />--------<br /><br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFsRBy6Y-fMa4sWMtLnqlNq6i1GEpHaEMdAqfgz0cTBLQiu8h3ncDBOBDOXmV75roGiGzp0cXPFaAquwGprz4xdZk_tytzlxSGbntsB_dC_lC1_SUpJGMKiDvq1q1aIIkDQO-bNZXL5bc/s1600-h/AlexMakingChargerPlugCase.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFsRBy6Y-fMa4sWMtLnqlNq6i1GEpHaEMdAqfgz0cTBLQiu8h3ncDBOBDOXmV75roGiGzp0cXPFaAquwGprz4xdZk_tytzlxSGbntsB_dC_lC1_SUpJGMKiDvq1q1aIIkDQO-bNZXL5bc/s400/AlexMakingChargerPlugCase.jpg" alt="" id="BLOGGER_PHOTO_ID_5154400252549873026" border="0" /></a><span style="font-family:trebuchet ms;">Alex mounting the indicator lights<br />(he's not playing with his shirt -- he's putting holes in a small<br />plastic case to hold the LEDs and switch for the charger plug)<br />--------<br /><br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVTMHGdM2fa_xKXb_LD5pczPJMKZ8nV8_KsBL6sDDfNYdy5-LGXCPjjqjhcTaB0NOmMzE-GrS6MLj9CpwAhiF2m14fih0sPzRMq07BXNS0oMOezU7ZoRv7SVw3kDRjpIkeow9wQQAdHgM/s1600-h/DaveBakingClay.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVTMHGdM2fa_xKXb_LD5pczPJMKZ8nV8_KsBL6sDDfNYdy5-LGXCPjjqjhcTaB0NOmMzE-GrS6MLj9CpwAhiF2m14fih0sPzRMq07BXNS0oMOezU7ZoRv7SVw3kDRjpIkeow9wQQAdHgM/s400/DaveBakingClay.jpg" alt="" id="BLOGGER_PHOTO_ID_5154401193147710866" border="0" /></a><span style="font-family:trebuchet ms;">Dave baking his clay discs<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">The Nambeg villagers make beautiful, durable pottery using a pit-fire to heat the clay. In Ghana last summer, Dave worked with the villagers to make a lantern out of clay (see photo below). Kiln-fired clay shrinks during firing, so it is not suitable for making "parts" that fit with other components -- in our case, mounting holes for the LED and circuit, and grooves for the diffuser and bamboo. Pit-fired clay, however, does not shrink or change shape. Dave felt it was perfect for making lantern parts because it used materials and skills the villagers already possessed. Since we couldn't make our own pit-fire in the lab, we tried air-dry clay, but that was too brittle. Sculpey oven bake clay works very well -- it hardens in under an hour at 130C. (When the villagers make their own lanterns, they'll use their own methods and materials. The sculpey was just for prototyping.)<br /><br /></span></div></div><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrNXIiFDZkDGhcvicBkfw58WHpdvBEKGIG37Dus6gThc_6jQOkm7RApxT39brgZVFRDHupOvn87xQ2_YonXQ_Ka-W-YDwdZ8Aw7WpfB38uZ6CqDFW_aECKapYskbAkokvTOH4lKupnrCo/s1600-h/IMGP1818.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrNXIiFDZkDGhcvicBkfw58WHpdvBEKGIG37Dus6gThc_6jQOkm7RApxT39brgZVFRDHupOvn87xQ2_YonXQ_Ka-W-YDwdZ8Aw7WpfB38uZ6CqDFW_aECKapYskbAkokvTOH4lKupnrCo/s400/IMGP1818.JPG" alt="" id="BLOGGER_PHOTO_ID_5154405299136445858" border="0" /></a><span style="font-family:trebuchet ms;">A ceramic lantern made by the Dave Berger, Yoorhim Choi, and the people of Nambeg<br />(this photo was taken last summer)<br />--------<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBRBQp-A7_GiJqHuYa2W3hu_m9H95UlctTEbHDlLux38PWlDCF0zPu5eVW6lDK_l9Y55612uXFDAcHBPSRF75McXWkFc1msTqo01IbFFb2tZGlFDzzO4dj7n5Vw4l1-bJpdqMDZ06hZgM/s1600-h/SolarLanterns-Summer2007.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBRBQp-A7_GiJqHuYa2W3hu_m9H95UlctTEbHDlLux38PWlDCF0zPu5eVW6lDK_l9Y55612uXFDAcHBPSRF75McXWkFc1msTqo01IbFFb2tZGlFDzzO4dj7n5Vw4l1-bJpdqMDZ06hZgM/s400/SolarLanterns-Summer2007.jpg" alt="" id="BLOGGER_PHOTO_ID_5174321545031248402" border="0" /></a><span style="font-family:trebuchet ms;">The three lanterns distributed in the summer of 2007.<br /></span><span style="font-family:trebuchet ms;">(this photo was taken last summer)<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">The juice can and ceramic lanterns were made by Dave Berger, Yoorhim Choi, and the people of Nambeg. The bamboo lantern in the middle was made by Prof. Cumberbatch's Spring 2007 sustainability class.</span><br /></div><span style="font-family:trebuchet ms;">--------</span><br /><span style="font-family:trebuchet ms;"><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZsYCnvNGeVssT7zi-n-gGD_lyohvQmt0uLQUO9fBy5tHOM_CZ29EQ9ER8rm9giEQjHAxqRD5EY54vEhazP_IZYyR1MnoiqhvdgJ6DwvSAWoB3Qs9UV5StFDWPHEkqi9GzMgG0RlbZ6n0/s1600-h/ElaineSoldering.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZsYCnvNGeVssT7zi-n-gGD_lyohvQmt0uLQUO9fBy5tHOM_CZ29EQ9ER8rm9giEQjHAxqRD5EY54vEhazP_IZYyR1MnoiqhvdgJ6DwvSAWoB3Qs9UV5StFDWPHEkqi9GzMgG0RlbZ6n0/s400/ElaineSoldering.jpg" alt="" id="BLOGGER_PHOTO_ID_5154711113692823026" border="0" /></a><span style="font-family:trebuchet ms;">Yunglin soldering components onto the printed circuit boards<br />--------</span><br /><span style="font-family:trebuchet ms;"><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4JVYVapzB9HhCkEPDZiz7aqUm1IirYGixDxEADUNOLNroAb0fQtDVr32SiONr_3KfyGS4HXK_FRYhlAniNx0TJtPnOXTEp4AEMKZ5gGQNzf1qr2H9pRgwjyAi9lUiXfOhi6Mtmc4ZPw4/s1600-h/PCB-InTheLantern.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4JVYVapzB9HhCkEPDZiz7aqUm1IirYGixDxEADUNOLNroAb0fQtDVr32SiONr_3KfyGS4HXK_FRYhlAniNx0TJtPnOXTEp4AEMKZ5gGQNzf1qr2H9pRgwjyAi9lUiXfOhi6Mtmc4ZPw4/s400/PCB-InTheLantern.jpg" alt="" id="BLOGGER_PHOTO_ID_5174315003796056498" border="0" /></a><span style="font-family:trebuchet ms;">The finished printed circuit board for the lantern, with all parts soldered in place.<br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;"><br />This circuit drives the LED using pulse width modulation to control the LED's brightness. The circuit also automatically disconnects the battery from the LED to prevent the battery from discharging more than about 50%. (When we originally designed this circuit, Fall 2007, we thought we were only discharging the battery 25%. But after additional experiments in the lab this semester, Spring 2008, we are finding that depth of discharge for our circuit is somewhere between 45% and 55%).<br /><br />Why It's Important to Limit the Battery's Depth of Discharge....<br />Limiting the battery's depth of discharge is important for increasing the life of lead-acid batteries. Discharging a lead-acid battery more than 100% (a.k.a. "deep discharge") severely shortens the life of the battery. One measure of "battery life" is the number of charge-discharge cycles before charge retention capacity drops to 60%. When a battery can only hold 60% of its charge, it's considered "dead" (and hopefully gets recycled).<br /><br />Limiting discharge to less than 100% (and assuming optimal temperature and optimal charging methods), you get about 250 cycles for 100% discharge, compared with 1100 cycles for 30% discharge. In other words, thinking about the total run-time (the amount of time the battery lasted each time you used it, multiplied by the number of charge-discharge cycles), you can squeeze out about 30% additional total run-time from a lead-acid battery, discharging it 30% instead of 100%. So, yes, there is a bit of advantage to limiting depth of discharge to MUCH less than 100%, but it gets a bit more complicated...<br /><br />In between the battery being dead (i.e. 60% charge retention capacity), and being fresh (i.e. 100% charge retention capacity), there is a period of time where the battery is getting old -- not completely dead, but still not able to hold it's full charge. As you might expect, this "aging" effect is accelerated the closer you get to 100% discharge. For example, discharging the battery 30%, it can still hold a full-charge, even after a little over 400 charge-discharge cycles. Discharging 100%, you lose full-charge capacity in less than 100 cycles. Once again, there is a tiny advantage in limiting depth of discharge to MUCH less than 100%...<br /><br />On top of this depth-of-discharge-effect on battery life, however, there is an upper limit on how long a lead-acid battery will last. In other words, we cannot discharge the battery 100% once a year, and expect it to last 250 years! Even under the best of conditions -- never using the battery, but maintaining it in a "float" state (meaning that it is kept perpetually charged) -- a lead-acid battery will last less than a decade. And as temperature increases, this upper limit decreases exponentially.<br /><br />Even without knowing exactly what that upper limit is, we can still try to squeeze every last bit of energy out of the battery before it is ready to be recycled. We plan to improve the cut-off circuit so that depth of discharge begins small, but increases as the battery ages to track the drop in the battery's charge retention capacity. Not only does this increase the battery's usable life, it also maintains a consistent lantern-run-time for (almost) the entire life of the battery.<br /></span></div><span style="font-family:trebuchet ms;">--------</span><br /><span style="font-family:trebuchet ms;"><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM8Kh28l1OFFxALKgEsi5O20m0IiWKYptB8nTCjsJ7da_y1pIyhOIbLQ_UPccBwaabj9eBRitPJvsVWMas2l1Vf8mz2gI8PD3DxQ7dERWfuYzyQBNxK7n8VwroNHlKaQxnTOpm3ovNU08/s1600-h/JohnSolderingtheChargingJacks.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjM8Kh28l1OFFxALKgEsi5O20m0IiWKYptB8nTCjsJ7da_y1pIyhOIbLQ_UPccBwaabj9eBRitPJvsVWMas2l1Vf8mz2gI8PD3DxQ7dERWfuYzyQBNxK7n8VwroNHlKaQxnTOpm3ovNU08/s400/JohnSolderingtheChargingJacks.jpg" alt="" id="BLOGGER_PHOTO_ID_5154410405852560818" border="0" /></a><span style="font-family:trebuchet ms;">John soldering the charging jacks<br />--------<br /><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx9w9Ig5KCm66GQULaeaRuTP9r60Z3Q55_h_LGU_qroELpbkiH6Bh9I9wfcV8aFc9hmgUgrCVispmrFWjjM_dy6psFfRy4T03uOJd8VWYv6gvHZR101N5TrzNGiI9EPxM-gEXMrzLVR5Q/s1600-h/PCB-InTheCharger.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx9w9Ig5KCm66GQULaeaRuTP9r60Z3Q55_h_LGU_qroELpbkiH6Bh9I9wfcV8aFc9hmgUgrCVispmrFWjjM_dy6psFfRy4T03uOJd8VWYv6gvHZR101N5TrzNGiI9EPxM-gEXMrzLVR5Q/s400/PCB-InTheCharger.jpg" alt="" id="BLOGGER_PHOTO_ID_5169936739099231378" border="0" /></a><span style="font-family:trebuchet ms;"></span><span style="font-family:trebuchet ms;">Closeup of the battery charging circuit PCB (printed circuit board).<br />The PCB is mounted on a piece of sheet metal that also<br />serves as the heat sink for the series-pass transistor<br /></span></div><div style="text-align: left;"><span style="font-family:trebuchet ms;"><br />Description of the Lantern's Battery Usage:</span><br /></div><div style="text-align: left;"><span style="font-family:trebuchet ms;">A 6-hour charge provides about 20 hours of run-time at full brightness. A battery disconnect circuit in the lantern prevents its battery from discharging more than 30%, resulting in an expected battery life of over eight years (assuming the lantern is used for 6 hours every night).<br /><br /></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqacqLRYhPBFuckxgO-bIUPiIcUIVbRjGrpkSkK55_h_eXyzj7nLhyjF_N-ikGYomolkndDgvlnHEIsSq0FhQykeDEiOZBEvkxBkD9LbFFJa6NWNZ4aVzHjIYAP1f6HhpVAJIlHeisa1Y/s1600-h/ChargingBox.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqacqLRYhPBFuckxgO-bIUPiIcUIVbRjGrpkSkK55_h_eXyzj7nLhyjF_N-ikGYomolkndDgvlnHEIsSq0FhQykeDEiOZBEvkxBkD9LbFFJa6NWNZ4aVzHjIYAP1f6HhpVAJIlHeisa1Y/s400/ChargingBox.jpg" alt="" id="BLOGGER_PHOTO_ID_5154707445790752210" border="0" /></a><br /></div><span style="font-family:trebuchet ms;"></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">We used standard outdoor junction boxes to house the charging circuitry. Each box (there's three in total) contains two charging circuits. A single cable gland on each box provides strain relief for the cables, and moisture protection for the circuitry. To avoid making unnecessary holes in the box, each circuit is mounted on a piece of sheet metal, made to fit snuggly in the box. This same piece of sheet metal is also the heat sink for the circuit's series-pass transistor (see previous photo above).<br /><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfqX9ciac_zgpvKXbk68dcvUUm47ppX_y5NUrMkBHAYdJvH6QQvRKemu2snyNtBOG6inxxQD0TfffL6wATvrPRDrgdo40nvveiZfNvGUyaIHN5dSOeCQn0tgI02bnnF86QzKLDuDMRq70/s1600-h/ChargerInstructions.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgfqX9ciac_zgpvKXbk68dcvUUm47ppX_y5NUrMkBHAYdJvH6QQvRKemu2snyNtBOG6inxxQD0TfffL6wATvrPRDrgdo40nvveiZfNvGUyaIHN5dSOeCQn0tgI02bnnF86QzKLDuDMRq70/s400/ChargerInstructions.jpg" alt="" id="BLOGGER_PHOTO_ID_5169954631932986530" border="0" /></a><br /></div><div style="text-align: center;"><span style="font-family:trebuchet ms;"> Big thanks to Sara Foley for drawing the cartoon "Charging Instructions" on the cover plates.<br />--------<br /></span></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTo7OSFvQyAD_x3IDiIBozyY1QKSqFz-7mp64gj94sKfA4Ph_7Ps1_0qfdb03hcjMNJPnetOCPuMdQzzQhOMnZ6M4S0e4lC6BFwvD3K20VKb5hwfI6RB2FW3j_-jZi9F__aC5R5jzgKJE/s1600-h/ChargerPlug.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTo7OSFvQyAD_x3IDiIBozyY1QKSqFz-7mp64gj94sKfA4Ph_7Ps1_0qfdb03hcjMNJPnetOCPuMdQzzQhOMnZ6M4S0e4lC6BFwvD3K20VKb5hwfI6RB2FW3j_-jZi9F__aC5R5jzgKJE/s400/ChargerPlug.jpg" alt="" id="BLOGGER_PHOTO_ID_5169955194573702322" border="0" /></a><span style="font-family:trebuchet ms;">The charging plug</span><br /><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">Charging Instructions:<br />The charging plug is inserted into the charging jack on the lantern. Press the button, and the red LED lights up, indicating that the lantern is charging. When the green LED lights up, the lantern is finished charging.</span><br /></div></div><span style="font-family:trebuchet ms;"><br />In a few days, Prof. Cumberbatch will install these chargers at the village's base station (see photos below, from summer 2007). The base station was set up last summer by Dave Berger, Yoorhim Choi, and the Nambeg villagers. The chargers will receive power from the base station's car battery, which is re-charged by two Uni-Solar US-64 solar panels.<br /><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjw0FKN1xHzwsHVRQTTTDyA34QBkDMiBdvw30GhaQ1n8hjn6LpKvu7QOmW8NQb3BoYs76_r6IylfuQ55SL-2TUXYsVl1pPUXejMW2cGHb-gtSjNKrO5Ohlr3AMvJIJ8b8Myhb1i8crQqqw/s1600-h/IMGP1812.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjw0FKN1xHzwsHVRQTTTDyA34QBkDMiBdvw30GhaQ1n8hjn6LpKvu7QOmW8NQb3BoYs76_r6IylfuQ55SL-2TUXYsVl1pPUXejMW2cGHb-gtSjNKrO5Ohlr3AMvJIJ8b8Myhb1i8crQqqw/s400/IMGP1812.JPG" alt="" id="BLOGGER_PHOTO_ID_5154716340668022322" border="0" /></a><span style="font-family:trebuchet ms;">Villagers on the roof with the solar panels<br /></span><br /></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYFrEx3EooXephdrc8dLfxA1iuX-vEWjuliDPUcpsTZvC9ERdjnDHySS51KZBzLc9v5vGwPu85pc9QkgPc3DE_dZHD5IVvZ21Bj4-_Fp8IEapujfc3I0QAvb5LOnlGYb_FSTXewPtaG4I/s1600-h/IMGP1914.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYFrEx3EooXephdrc8dLfxA1iuX-vEWjuliDPUcpsTZvC9ERdjnDHySS51KZBzLc9v5vGwPu85pc9QkgPc3DE_dZHD5IVvZ21Bj4-_Fp8IEapujfc3I0QAvb5LOnlGYb_FSTXewPtaG4I/s400/IMGP1914.JPG" alt="" id="BLOGGER_PHOTO_ID_5154715876811554338" border="0" /></a><span style="font-family:trebuchet ms;">Side view of the house, the roof of which is shown in the previous photo.<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">If you look closely, you can see the electrical cable running from the roof into the house, right above the door.</span><br /></div><span style="font-family:trebuchet ms;"><br /></span></div></div><div style="text-align: left;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMkBR_WDcqoLxFMoK-4VMQ3Nksp2nsVADn4XAZ1rmpVG0N0WPrhB8w9SmYzVFE23SMH5-knRC2AuR70p71YzljKwBx3ECxQvbo0PpNqlOzROBLTQhqX5Fn0xa0vA8UEzgWLQvQ901AAqA/s1600-h/IMGP1924.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMkBR_WDcqoLxFMoK-4VMQ3Nksp2nsVADn4XAZ1rmpVG0N0WPrhB8w9SmYzVFE23SMH5-knRC2AuR70p71YzljKwBx3ECxQvbo0PpNqlOzROBLTQhqX5Fn0xa0vA8UEzgWLQvQ901AAqA/s400/IMGP1924.JPG" alt="" id="BLOGGER_PHOTO_ID_5154715576163843602" border="0" /></a></div><span style="font-family:trebuchet ms;">This is where the cable terminates in the house.<br /><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">On the floor is a car battery for storing energy from the two solar panels on the roof. The white box on the table contains a charge controller, an automotive fuse block for distributing power, and an inverter (DC to AC converter) for powering maintenance tools, such as a soldering iron or a portable drill.<br /></span><div style="text-align: center;"><span style="font-family:trebuchet ms;">--------</span><br /></div></div><span style="font-family:trebuchet ms;"><br /></span><div style="text-align: left;"><span style="font-family:trebuchet ms;">For more information, please contact Professor Toby Cumberbatch of Cooper Union:<br />tcumberbatch (at) mac.com<br /></span></div></div>SustainableLabhttp://www.blogger.com/profile/14267705294974520166noreply@blogger.com10