Relay

A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.

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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 …

Automatic Water Level Controller for Pump using 555 Timer IC

“Automatic water level controller for the submersible pump and overhead tank with 555 timer IC. Also check the underground tank water level. In this mini electronics project, I have shown how to make an automatic water level controller for the …

DIY Mini UPS for WiFi Router V4.0

“The pandemic COVID-19 outbreak forced companies to continue with work-from-home policy to maintain social distancing and for business continuity. More and more of us are working from home these days, and that means your home’s WiFi networks are …

Smart Irrigation

“Automatic irrigation of 3 plants of Pothos, through the use of Wemos (ESP8266). The project aimed to wet the plants of Epipremnum aureum, commonly known as Pothos or Scindapsus aureus. These plants are found in the Prototyping laboratory of school …

ESP32 Plant Monitoring with Arduino IOT Cloud Remote App

“Real time plant monitoring system to view temperature, humidity and soil moisture using ESP32 (Magicbit) board and Arduino iot cloud App. Monitoring plant health is very important for their fast growth. In this busy world, people usually forget to water …

Infrared Remote Control Decoder & Switcher using Arduino

“Infrared Remote Control Decoder & Switcher using Arduino Story Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article/video, we learn to build a device that can decode (almost …

Remote Shutter Circuit : Pentax K1000 Film Camera

“Ill be using the Raspberry Pi PICO to make a infrared remote shutter for an old film camera. This is the equivalent of a simple remote shutter operated by a small button you might use on a dslr camera, or …

How to Build a Bluetooth Controlled Home Automation

“Do you want to automate your home? Ever wished to control your appliances with a swipe on your phone? Or do you want to learn how to build automation device for yourself? In this project, lets see how to build …

Blynk - creating a local server with a Raspberry Pi

“Blynk, is it the savour of microprocessors everywhere? Well at first look this seems to show promise, so let’s take it for a spin and see. While looking for a unique way to control a two-stage green-house, I came …

IOT Based Fertilizer System for Smart Agriculture

“Real-time visibility and control of water, Nitrogen-Phosphorus-Potassium - from any where an Internet of Things (IoT) based system. My country India has been badly affected by climate change due to heavy deforestation. So many campaigns arose planting more trees. However, to …