I/O Modules
- Relay board
This board handle 8 relays. An ULN2803 is driving the relays.
https://fmorin.fr/wp-content/uploads/2020/05/Relais8.zip
- Digital input board
This board handle 8 digital inputs. They are opto-isolated. It is designed to use 12V digital inputs, but can be different if changing resistors Rx0 and Rx1 in the schematic.
