The IoT device needs to be coded to communicate with test.mosquitto.org using MQTT to send telemetry values with the light sensor reading, and receive commands to control the LED. In this part of the ...

Makers, developers, and hobbyists who enjoy creating projects using the Arduino platform may be excited to learn that Adafruit has recently announced that their MQTT Arduino Library now supports the ...

The project itself is very simple: getting push notifications via MQTT when a wireless doorbell sounds. But as [Robin Reiter] points out, as the “Hello, world!” program is a time-honored tradition for ...

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 ...