The Adafruit MQTT Arduino Library works with the Adafruit CC3000, FONA, Arduino Yun, ESP8266 Arduino platforms, and anything that supports Arduino Skip to main content Skip to secondary menu ...

A photocell and TMP36 temperature sensor are connected to the Arduino, then with a bit of code and USB host magic, the Android app shows the temp and amount ambient light present in the room.

This video demonstrates how to set up a remote temperature monitoring system using an Arduino Uno R4 WiFi, an LM35 temperature sensor, and the MQTT protocol. The system captures ambient temperature ...