{"id":1278,"date":"2014-04-30T14:48:51","date_gmt":"2014-04-30T21:48:51","guid":{"rendered":"https:\/\/logicalelegance.com\/journey\/?p=1278"},"modified":"2014-04-30T15:06:03","modified_gmt":"2014-04-30T22:06:03","slug":"aas-vs-rechargeable-and-tutorials","status":"publish","type":"post","link":"https:\/\/logicalelegance.com\/journey\/2014\/04\/aas-vs-rechargeable-and-tutorials\/","title":{"rendered":"AAs vs rechargeable and tutorials"},"content":{"rendered":"

Ok, I’m writing up the tutorial. Or I would be if I wasn’t writing this. \u00a0In the comments for the photo essay, punkiepunkie<\/strong> mentioned putting this together with AAs instead of the rechargeable solution I’ve got going on.<\/p>\n

When I started, the Electric Imp drew so much power, AAs seemed crazy to me.<\/p>\n

Once I got the battery stuff mostly settled, though, I had trouble killing off even my littlest LiPo. With 150mAh, my littlest Lipo looks like it will last 20+ days.<\/p>\n

According to Wikipedia<\/a>, I can expect 1500 mAh from normal grocery store AAs. I’d need to put two in serial to serial to get 3V. Oh, looking at the power section of the Electric Imp’s breakout board description<\/a>, I \u00a0need\u00a03.3V to 17V, so three or four AAs in serial<\/a> would be best. Lots of power there, probably can go a year between new batteries, at least six months.<\/p>\n

I like rechargeable batteries but it definitely adds a lot of cost to my build. If I take out the LiPo charger, the LiPo battery, and the fuel gauge, that makes the build cost $53 instead of $91. (It also makes the build easier.)<\/p>\n

There are three different 4-AA holders, all of them $2:<\/p>\n