This week, I finished laying out the power board. I made it as small as possible and 2 layers to lower cost as much as possible. I also found an easier solution to generate negative voltage with a charge pump inverter IC. I also added fuses, test points, and status LEDs to the PCB. I also added M3 size mounting holes with plating for board support. Finally, I added nanofit connectors for input and output power that can go to the main board.
Next week, I plan on exporting the Gerbers and ordering this board with the other boards in our device. I also plan on pushing more code for the half-buffer interrupt, which I am a little behind on. We should still be on track for our MVP demo.
The power board:
