Puck js, how to send MQTT message with button pressed?

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dklinkman
@Gordon

I found this in one of my old posts. This is the specific syntax I had to use to get my /ble/write to work properly from the linux command line. It has to do with how the linefeed character gets passed through if I recall. But I don't know if this relates at all to the problem @Grzegorz is having.
```
mosquitto_pub -t /ble/write/c7:6e:71:dd:ee:ff/nus/nus_tx -m $'digitalPulse(LED3, 1, 200);\n'
```

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