Communication with the MQTT Broker

From this page you communicate with the Broker: cloudmqtt.com



Connect: Establish connection to the Broker

Subscribe starts automatically to the Topic: codifythings/lightlevel

Publish: Sends LOW or HIGH to the subscribed topic. OPEN and CLOSE controls the system. If OPEN the red light is turned on if dark and visa versa. If CLOSED no change can happen.

This program build on the MQTTSensor.ino and MQTTActuator.ino programs for Arduino implementet on NodeMCU as sensor and WemosD1R2 as actuator. The program sensors the light and turns on or off a light depending on that. At the same time the WEB part makes it possible to control if the light may be changed.

Disconnect: Disconnecting



Publish
Turn on Light
Turn off Light

Open and Close for Sensor Reactions (The Red Light)

Open for Change
Closed for Change


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