MQTT

Control via MQTT

You can control ledder via mqtt, by starting the MQTT animation. In the controls of that animation you can specify mqtt host and topic.

Starting an animation

NOTE: Make sure you've started and configured the MQTT animation first. This special animation is like a plugin to enable MQTT support.

Use this topic: ledder/select:

Example:

mosquitto_pub -h mqtt.hackerspace-drenthe.nl -t 'ledder/select' -m 'Text/Marquee/default'

Getting controls for selected animation

Use this topic: ledder/get

Example:

mosquitto_pub -h mqtt.hackerspace-drenthe.nl -t 'ledder/get' -m ''

MQTT output:

ledder/get (null)
ledder/state/Font {"selected":"C64"}
ledder/state/Font height {"value":0}
ledder/state/Font width {"value":0}
ledder/state/Text {"text":"Marquee  "}
ledder/state/Text color {"r":33,"g":255,"b":0,"a":1}
ledder/state/Stars/Enabled {"enabled":false}
ledder/state/Star field/Enabled {"enabled":false}
ledder/state/The Matrix/Enabled {"enabled":false}
ledder/state/Scrolling/Enabled {"enabled":true}
ledder/state/Scrolling/FPS {"value":60}
ledder/state/Scrolling/Rotate interval {"value":2}
ledder/state/Scrolling/Rotate interval randomizer {"value":0}
ledder/state/Scrolling/Rotate X step {"value":-1}
ledder/state/Font {"selected":"C64"}
ledder/state/Scrolling/Rotate Y step {"value":0}
ledder/state/Font height {"value":0}
ledder/state/Scrolling/Circular {"enabled":false}
...

Setting a control

For example to change the text of the marquee animation:

mosquitto_pub -h mqtt.hackerspace-drenthe.nl -t 'ledder/set/Text' -m '{"text":"hello"}'