A self-powered battery tester with an EFM32
A self-powered battery tester with an EFM32 by Hlipka:
This entry was posted in measurement and tagged battery tester, EFM32.
So the idea that came to my mind was: why not build a proper battery meter which can give real and accurate numbers. That can’t be so complicated! And since the EFM32 is so low-power, why not make it powered from the battery I’m currently measuring? Drawing some additional microamps from it can harldy change the results…