Yamaha 12V trigger out

Solution to a first world problem

I'm going to use the trigger out from a Yamaha receiver to activate servos that will mechanically activate front speaker amplifier and power amp for the subwoofer (with delay)

Project not completed

2x pcb and servo

So far only prototype build

Code v1.0

Trigger out charges C1, this will act as debounce

8.2KΩ with D1 as protection for input pin

R2 as relief for output pin

for servo PPM

Proof of concept 1

Proof of concept 2

Schematic

PCB CAD

PCB built on prototype board

Fippelnis.se

Yamaha 12V trigger out