Showing how I setup my S20 to talk with MQTT on Home Assistant.
S20: https://amzn.to/2MBQ5yR
Jumper Wires: https://amzn.to/2OJDQTx
Programmer: https://amzn.to/328eKlq
Raspberry Pi 3 B+: https://amzn.to/2MDYuBR
Power Supply: https://amzn.to/2MbomGm
Pi Case: https://amzn.to/2oANGww