murmur

dependencies

pyyaml

sudo pip3 install pyyaml

gpiozero

sudo apt-get update
sudo apt-get install python3-gpiozero

relay repo is a submodule

link to the repo

signal flow

electrical connections

denkovi 5V 4-channel relay board

link to the board

raspi connections to relay board:
    5V -> VCC
    GND -> GND
    GPIO -> IN*

power supply connections to relay terminals:
    +V 24V power supply -> +V actuator power input
    GND 24V power supply -> NC relay terminal -> GND actuator power input