I streamed the hacking of the 4 way relay board yesterday, and I'm pleased to say I have it all working. Here is pretty much a recap of the streams that lasted couple of hours.
Stream 1: https://youtu.be/7p8J9RHOoG4
Stream 2: https://youtu.be/d6e1S_FeCx8
Article and a tutorial video:
Thank you for your support!