Tutorial ESP8266 DS18B20 Temperature Node-RED MQTT (Mosquitto) IoT

This time the integration of ESP8266 and the Node-RED platform was realized integrating a sensor DS18B20 of Protocol of Temperature Onewire.

From an HMI or SCADA Web creator on Node-Red-Dashboard using the MQTT protocol and the pubsubclient library converting the ESP8266 into the MQTT Client will perform the sensor reading periodically.

Previous tutorials Recommended

The ESP8266 module has been configured as an MQTT client, as a publisher to the “temp / sensor” topic, the module performs the Onewire reading without intermediate libraries, sending almost instantaneously the temperature to be worried and visualized from Node-RED.

 

 

Mosquitto MQTT Broker

Previously it has been installed in a computer with lubuntu (Ubuntu) Linux, the server Broker MQTT which performs the management of messages in the network, Mosquitto has been used in this case.

Node-Red

A sequence of nodes has been created to send data from the Dashboard.

Video Tutorial ESP8266  Temperature DS18B20 (Onewire) MQTT Node-Red  IoT#6

 Install Node-RED

 

 Materials and Very cheap!!

• 1 ESP8266 01 or  ESP8266 12E NodeMCU
• 1 Regulator LDV33CV  5 a 3.3V
• 1 Chip FTDI Serial
• 1 DS18B20 One Wire

Connections