Eltek-Flatpack2-ESPhome

Configure and monitor Eltek Flatpack2 PSU using ESPhome, here used to charge Li-ion battery pack, controlled from Home assistant.

HW prototype

note that PSU is reverting to the default voltage with no current limit while the communication is lost
CAN bus is wired directly from the PSU, you shall use "professional" board to connect the backplane
there's a layer of insluating tape (polyimide, kapton) below the CAN transceiver
no need to update serial number within the code, it will be fetched from a CAN messages
current limiting is working only above 48V on an output terminals (not just configured voltage)

HA lovelace