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UM2 No Power - Brick works


dmolina
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Posted · UM2 No Power - Brick works

Hello all,

I've been trying for the past weeks to bring this UM2 board I got to life. From the start, the board didn't accept firmware uploads, didn't comply when trying to burn the bootloader thru ISP or USBtiny programmers, but now, after countless hours, it seems I got those steps right, as I've been able to successfully upload Marlin into it.

The problem is, when I plug the brick and turn the board on, it doesn't turn on. When I supply power to the board thru either ICSP pins I get the green led and can communicate with it though.

I'm sure that the brick works because I've tested it in my printer, and the other brick I got doesn't turn it on either.

I wonder if there is anything happening with the relay, if I need to bring some pin HIGH or LOW somehow.

Any ideas?

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