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Here we describe a very simple, economical and light-weight automatic nightlight that runs on 230V AC mains and can be used as a deluxe gizmo in the sleeping room of your kids. The arrangement proposed by the author is...
Monitoring of various process variables such as temperature, pressure, viscosity, humidity, pH and flow-rate is very important in steel plants, petrochemical and other such industries. The human-machine interface (HMI) at the operator station displays a continuous and real-time trending...
A "Clap On Clap Off" switch is an interesting concept that could be used in home automation. It works as a switch which makes devices On and Off by making a clap sound. Although its name is “Clap switch”,...
Motor driver modules for motors allow you to control the working speed and direction of two motors simultaneously. Here we present an alternative ULN2803 based motor driver circuit to drive two motors. The main advantage of this project is...
We face a lot of problems everyday to charge our mobile phone batteries. Here is a simple and effective way to charge your mobile phone batteries with a 9v Battery. You can check the status of the battery pressing...
In this small project, the presenter will give you a short tutorial on accelerometer ICs and find out how we can use them with an Arduino. Also, he will explain how one can combine such an IC with a couple...
Theremin is an early electronic musical instrument controlled without physical contact by the thereminist (performer). It is named after the Russian inventor, Léon Theremin, who patented the device in 1928. A typical theremin musical instrument is shown in Fig....
If you are an electronics hobbyist and need to measure low currents and low voltages, you can buy any inexpensive multimeter. However, test leads of such meters are fragile. That’s what led me to make my own multimeter test...