flexnodes 7 Posted March 23, 2012 Share Posted March 23, 2012 Hi, I couple of months ago I started using the launchpad, then I decided that a booster pack with a lipo battery would be a nice feature, so I went ahead and design my own. I build up a boosterpack, although, I first call it power-shield (newbie fail). I decided to used a 14500 li-ion as battery due to their cheap price and relativele high capacity, I can charge it both by USB and a solar panel. For the output I an currently using a 3.3V LDO. Do you have any ideas on how to improve it? I will be glad to hear your feedback CptanPanic 1 Quote Link to post Share on other sites
flexnodes 7 Posted March 23, 2012 Author Share Posted March 23, 2012 It is my first post so I cannot post any image, tomorrow I will try to do so. Quote Link to post Share on other sites
bluehash 1,581 Posted March 23, 2012 Share Posted March 23, 2012 Make one more dummy post. Also, welcome to the Forums! flexnodes 1 Quote Link to post Share on other sites
flexnodes 7 Posted March 25, 2012 Author Share Posted March 25, 2012 As promised I attach some photos: schematics: As you can see I added some screw holes to the board. You can find more info at: http://www.flexnodes.com pine, GeekDoc, Tribes and 3 others 6 Quote Link to post Share on other sites
cubeberg 540 Posted March 25, 2012 Share Posted March 25, 2012 Very cool - is the solar cell enough to keep the LP and Anaren booster running, or does it just extend the battery life? I decided to used a 14500 lipo as battery Aren't 14500 batteries Li-Ion? flexnodes 1 Quote Link to post Share on other sites
bluehash 1,581 Posted March 25, 2012 Share Posted March 25, 2012 Does it mention solar cell anywhere.I don't see it. Quote Link to post Share on other sites
flexnodes 7 Posted March 25, 2012 Author Share Posted March 25, 2012 Very cool - is the solar cell enough to keep the LP and Anaren booster running, or does it just extend the battery life? I decided to used a 14500 lipo as battery Aren't 14500 batteries Li-Ion? Yes they are just Li-ion , no polimer, my fault. About the battery life with the solar panel, is something I still have to check, The solar panel that can barely be seen in the photo (follow the black and red wires) is just 0.5W but due to the low power requirements of the launchpad I am optimisticthat it will be enough . Quote Link to post Share on other sites
timotet 44 Posted March 26, 2012 Share Posted March 26, 2012 great job! cool blog too. Quote Link to post Share on other sites
zeke 693 Posted March 26, 2012 Share Posted March 26, 2012 Do you have a protection circuit on that 14500? Quote Link to post Share on other sites
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