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How do I power a FRDM-KL25Z board with a coin cell battery?

Question asked by Mark Greenaway on Jul 17, 2016
Latest reply on Jul 18, 2016 by jeremyzhou


I've been reading posts on the mbed forums, and I'm under the impression that I need to attach a coin cell battery holder to the underside of my FRDM-KL25Z. But is there anything else I need to do? I've tried powering the board through the VIN and GND. It does not power up using a coin cell, but does power up when I connect a 9V battery to VIN and GND. I'd prefer to use a coin cell, because that's much lighter and smaller, and I could attach the battery holder to the board.

 

Any help would be appreciated. I'm not an electrical engineer :-)

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