Hello, greetings, and wattup.
I recently acquired an M2 (just the board itself) and I have a pi 4. The pi 4 is part of a prototype for a cool project I am working on, which for the time being I am trying to kind of keep under wraps, but yeah. I am really excited to play around with the M2 and see if/how it will fit into my project.
Now, the Pi 4 needs 5v and like 3 amps if I am not mistaken to run. Pin 16 provides 12v +/-1, and I noticed the breakout board has a +5v output. Has anyone powered their pi through the GPIO or SPI with the M2? I remember reading something about it a while ago, and of course I don’t want to just hook it up. I have been looking around but I figured it never hurts to ask if someone else has done it too.
If it works, I am likely going to pair it with a small battery, and set it up so when it senses loss of the 12v or 5v signal on either board, it will gracefully shutdown. I have done that on another pi, though it was hardwired to the fuse block with a power conditioner/voltage regulator. It worked well enough. Figure this shouldn’t be too dissimilar.
So yeah. I am open to other ideas too but so far the combination of this M2 board giving me the hardware tools to communicate with a LOT of stuff, and the Pi with it’s computing power, just seemed like the right way to go, but hey; it’s a prototype, and I can pivot how I want since it’s my project. haha.