Controlling monitor volume, brightness, and input with ddcutil via MQTT
Dependencies:
paho-mqtt
MQTT Command Topics:
Volume: ddcutilMQTT/cmnd/vol (0-100, up, down)
Brightness: ddcutilMQTT/cmnd/bri (0-100, up, down)
Input: ddcutilMQTT/cmnd/inp (HDMI1, HDMI2, VGA) *May vary depending on manufacturer and/or model