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 visualize the measurements in Node- RED Dashboard to visualize the 4 available variables such as…

FRED front-end Node-RED in the cloud

In previous tutorials we have tested with the Node-RED platform a visual wiring tool or connection of technologies applications devices and gadgets created by IBM much used for the Internet of things and this time we will try it in FRED. In previous tests Node-RED was installed locally in my case a server with Lubuntu…

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 for Internet monitoring and control tests, are available to connect from any MQTT client in…

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 ESP8266 01 and I have included An audio amplifier to this test. We have also…

Tutorial ESP8266 Control Servo Node-RED MQTT (Mosquitto) IoT #2

This time the integration of ESP8266 and the Node-RED platform has been made integrating an actuator in this case a servo controlled by PWM with rotation from 0 to 180 degrees. From an HMI or SCADA Web creator on Node-Red-Dashboard using as base the MQTT Protocol and pubsubclient library converting the ESP8266 into MQTT Client….