5 VIM3 boards getting power and network over a custom backplane board for use in (mining) clusters. Individual power control for each of the 4 slave ports, including current monitoring - talk via I2C to the host board - cable over the top of the boards. Step up circuit to power 12v case fan (white header on top edge of the board) for cooling to remove second power supply in this video. Mains current monitoring via the two terminals on the top left
Will be publishing the designs when ive tided them all up. If there is interest could put together kits / populated PCBs.
Am hosting a webserver on the main board to give the whole unit a nice interface rather than low level I2C commands needed currently - working on the webpage for this now