So.... Been down at the workshop today ..
Got power to some of the devices, including the mega that will be the main processor, and also to the PC which will act as an HMI....
I have put a USB to serial adapter on the PC, and my first step is to have something like Meguno have an interface panel that will show the connection exists between the two, and receive a serial message giving the board identification....
Could someone offer a suggestion in this please?