this is isn't exclusively Arduino-related, but I can't find any entry-level info on Google...
I'd like to be able to charge the battery in my Arduino device a) without removing the battery pack and b) while the device is switched on and operating. Same behavior as a cell phone or ipod.
I guess this requires a charging circuit in the device, a circuit decoupling it from the arduino while powering it at the same time, and a regular DC adapter. But don't really know how these would be implemented.
Can somebody point me in the right direction to learn more about this?
Thanks a lot!