Hello, I’m interested in trying some off-grid things with my Pyramid and would like to know where I can connect to ground on the Pyramid pcb. Since this is usb power I’m not too sure and judging from my limited knowledge of pcb markings, it is’n clearly marked on the the back. Any adventurous souls out there who can point me in the right direction?
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I just figured I could use ground from one of the unused analog ins and outs, and then I don’t have to mess with the pcb and keep my warranty 
Guess I answered my own question!
No idea what your goal is, but I’m following. You have my vote! 