Meter PZEM-004 + ESP8266 & Platform IoT Node-RED & Modbus TCP/IP

In this opportunity we will integrate our active power meter or electric consumption,Pzem-004 – Peacefair with the IoT Node-RED integration platform used in previous tutorials, we will use an ESP8266 module configured as Modbus TCP / IP slave, later we will…

ESP8266 & Public MQTT Broker HiveMQ & Node-RED

The MQTT protocol has taken great strength in recent years since it is simple, safe, practical and lightweight perfect for IoT and M2M applications. Thanks to the contribution of developers and developers of MQTT applications, there are public MQTT Broker…

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Tutorial ESP8266 Node-RED Granafa InfluxDB MQTT

Based on the previous instructions of the ESP8266 connection with the Node-RED implementing the mqtt protocol, we have performed tests of the connection of several software platforms for the collection and visualization of data. We consider these 2 Grafana and InfluxDB…

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Tutorial Amplifier Audio PAM8302A ESP8266 Node-RED MQTT

There is a great variety of arduino tutorials generating melodies, one of the most common the famous “Imperial March” of the well-known Star Wars movie, I downloaded one of the examples for Arduino I made several modifications to work on an…