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add mqtt documentation

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Philipp Kramer 2025-01-07 11:37:52 +01:00
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README.md
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# Lightbuttons
![Device with case](preview.jpg "Lightbuttons")
## Hardware
- 1x or 2x: Adafruit NeoKey 1x4 https://www.adafruit.com/product/4980
- Switches and Keycaps for NeoKey.
- 1x Olimex ESP32-PoE-ISO
## MQTT
Set Button Idle Color:
N is Button Number 1-4
$BASETOPIC/color/button/N
topic:lightbuttons-A/color/button/2
payload is color as int32
When Powered on and connected device sends payload "online" on $BASETOPIC/status
Button presses are sent on $BASETOPIC/button/N. Possible Payloads are: "click", "doubleclick" and "longpress"

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