Power Supply redesign (20190331)

A project log for Trap chess

My neighbour creates totally insane chess boards. He needs my electronics skills for this one...

Yann Guidon / YGDESYann Guidon / YGDES 04/14/2019 at 22:020 Comments

My initial idea was simple, simplistic and optimistic... I had to change everything and here is the result after I rewired the power supplies :

At first I wanted to power everything from a single 5V source : motor, relays, logic. I realised that they had very different requirements and I had to split the rails, starting from a single 12V input:

The whole circuit should be more stable and hence predictable... Right ?