The PCBs
CanMod mini
This is a general purpose I/O unit that adds relays outputs, FET outputs, digital and analog inputs, 4-20 mA current loop input and DS18B20 bus temperatur sensor bus input.
VEdirect
Has four channels to read data from Victron devices using VEDirect ports.
Touch display
For user interaction Sunon displays with touch and ESP32 onboard are used. The user interface is defined in JSON using OpenHasp.