Content for Relay

DIY Variable Isolation Transformer

“Let’s clear one thing first. This is not a “Step by step -How to” guide to make your own variable isolation transformer. This is just me sharing my work, comments and ideas while building a piece of much needed …

DIY Arduino Corner lamps

“Corner Lamps controlled via clap Make Lamps and put in the corner and when you enter the room, just clap and these Red and Blue lamps will turn On automatically. When you clap once again, these lamps turns Off.”

Arduino NERF Ball Wireless FPV Sentry Turret

“This project will guide you through the steps to make an Arduino based 360 degree rotating foam ball turret with full joystick wireless control, and first person view camera and headset. This is a moderately complex project for hobbyists looking …

ESP32 Home Automation

“Automating your house with the esp32 microcontroller to make a wireless light switch / alarm clock. in this project we’ll see the steps needed to make a d.i.y home automation system: wirelss light switch, with alarm clock around …

Tasmota NodeMCU Alexa Smart Home System 2021 Without Coding

“How to make IoT-based Smart Home Automation with Tasmota Amazon Alexa & ESP8266 NodeMCU to control 4 relays from switches & Alexa app. I have shown how to make IoT-based Smart Home Automation Using Tasmota Amazon Alexa & ESP8266 NodeMCU to control 4 …

3 Phase AC input – DC Output – High Voltage DC Power Supply (2KW)

“Although this power supply design is specific to the Intelligent Power Modules (IPM) VFD drives, high voltage boost converters, high voltage battery chargers, etc, the concept and circuit design may be used for any power supply that requires a high …

MQTT ESP8266 Home Automation Project 2021

“How to make MQTT ESP8266 NodeMCU Home Automation project to control relays from the switch and smartphone (Circuit + Code) through internet. In this IoT project, I have shown how to make an MQTT ESP8266 Home Automation project to control a …

12V Uninterruptible Power Supply

“A simple and fully automatic, 12V uninterruptible power supply system for small/medium power appliances. Motivation This is a simple and fully automatic, 12V uninterruptible power supply system for small/medium power appliances. This power supply specifically designs to drive …

RFID Based Door Lock System Using Arduino Uno

“Here I’ll explain to you How to make RFID based door lock system using Arduino in a simple way. Hello, friends in this post I’ll show you How to make RFID based door lock system using Arduino UnoRC522 …

Automatic USB mains switch for USB-controlled power strip

“I wanted to buy a USB-controlled power strip which shuts the devices down when the PC is put to sleep. Life is not so easy: all available USB power strips are quite dumb - they simply use +5 V from …