This library is not maintained. It was my first 'popular' Open Source project, and brought MQTT to the Arduino platform just as both were gaining popularity. But times have changed, and I haven't ...
* NodeMCU D5 (GPIO14) RX ← Arduino TX (SoftSerial pin 3) * NodeMCU D6 (GPIO12) TX → Arduino RX (SoftSerial pin 2) ...
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