How do you connect your pucks to the world?

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otbe
Note:
I wonder how to "control" the puck in some way. I tried your advice at https://www.espruino.com/Puck.js+Node-RED.

So I published {"payload": "LED1.set();\n"} (and also LED1.set();\n) to /ble/write/puck1/nus/nus_tx
But all I get is:
```
MQTT>/ble/write/puck1/nus/nus_tx => "{\"payload\": \"LED1.set();\\n\"}"
Service 	6e400001b5a3f393e0a9e50e24dcca9e
Characteristic 	6e400002b5a3f393e0a9e50e24dcca9e
<Connect> Error Connecting
```
Am I missing some advertising?

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