Infrared communication is a common, inexpensive, and easy to use wireless communication technology. IR light is very similar to visible…
Sensors
ESP8266 NodeMCU – Simple IOT energy meter using Blynk APP
In this tutorial we will learn how to make a simple, single phase, IOT energy meter, where you can see…
ESP8266 NodeMCU – Simple Wifi Alarm using PIR Motion Sensor
In this tutorial we will learn how to use a PIR Motion Sensor (Passive infrared sensor) to detect if someone…
ESP8266 NodeMCU – Simple Wifi Servo control
In this tutorial, we will learn how to control a small servo-motor from your smart phone. If you want to…
ESP-01S – Wi-fi Relay module for light remote control
In this tutorial, we will learn how to build a wi-fi switch, and use it remotely. If you want to…
ESP8266 NodeMCU – Simple energy meter using PZEM004T
In this tutorial we will learn how to use a circuit board with energy measurements capabilities, to acquire the most…