Des informations sur comment fonctionne (et comment faire) un chargeur de batteries pour arduino.

As many of you may know, this Lazy Old Geek loves Arduinos. Many of my projects are portable and need a battery source: http://www.instructables.com/id/Arduino-Pedometer/ http://www.instructables.com/id/Arduino-Nokia-LCD-Sensors/ http://www.instructables.com/id/Ultrasonic-Tape-Measure/ All pricing was determined about early 2012. So, I’ve been using Adafruit 6 AA Battery holder $5.00 https://www.adafruit.com/products/248 with 6 AA rechargeable batteries. (See Picture) Another choice would be Adafruit 9V Battery holder $3.95 https://www.adafruit.com/products/67 My Complaint: Here’s why I don’t like 9V alkaline batteries Expensive ~$3 Low capacity ~600 mAh One time use In comparison, I bought 16 AA 3000mAh NiMH rechargeable batteries for $9.38 on ebay. 6 AA rechargeables would cost $3.50 but would have 5x the capacity and are rechargeable. My Complaint: Okay, so I’m a Geek and I’m not really satisfied with the 6 AA battery setup. It’s pretty heavy and bulky. My battery chargers will only take four batteries at a time, so I ...