MEGA COLLECTION OF ELECTRONICS DIY PROJECTS
Every week, we publish 2 to 3 projects, sometimes even more! They range from simple circuits for beginners, to advanced projects that you can use to develop complete innovative products! Most projects have been developed by enthusiasts like you. Some by experts. And, some by our team. Many are tested at EFY Labs, and some are not–but they typically have a proof-of-concept video.
High Fidelity FM Transmitter
FM broadcasting is radio broadcasting using frequency modulation technology. In order to attain high-fidelity broadcast of music and speech, all audio frequencies up to...
PC Based Stepper Motor Controller
This PC based stepper motor controller is perhaps the cheapest, smallest and simplest. A pair of H-bridges with a software program written in ‘C++’...
Magnet Operated Toggle Switch
When the author decided to develop a magnet operated toggle switch, what he had had in mind was an ‘unorthodox’ design that was as...
16-Way Clap Operated Switch
Control your home appliances with this clap operated switch, without getting out of your bed. You just have to clap in the vicinity of...
Continuity Tester With A Chirping Sound
Today, there’s a party at your home. And you are busy detecting faults in the decorative lights hanging over the boundaries of your house....
Shadow Alarm: Light Sensitive Circuit
This light sensitive alarm circuit sounds an alarm whenever a shadow falls on it. So it can be used at night by shopkeepers to...
Multicell Charger
Using this multicell charger, you can safely charge up to two pieces of Ni-Cd cells or Ni-MH cells. The circuit is compact, inexpensive and...
Bicycle Guard
This anti-theft device for bicycles is inexpensive and can be constructed easily using a few components.
At the heart of the circuit is a wheel...
Solar Powered Pedestal Lighting System
This solar-powered pedestal lighting system uses power LEDs for lighting. Solar energy is first converted into DC electricity by a solar photovoltaic cell and used to charge a storage battery.
Voltage Based Controller For Switches
Here’s a simple voltage based controller circuit for controlling four switches from a distance through just a pair of wires.
Voltage based controller circuit
In the...
3V PC Adaptor
Plug this circuit into the available USB output port of your PC to get 50mA, 3V DC. So it can be used to recharge, for instance, two NiCd cells (1.2Vx2) of a portable music player system.
Low-Cost Battery Charger
Here is a very simple and low-cost charger for 12V, 7Ah lead-acid batteries. It can also be used for powering automobile engines and emergency lighting systems.
Clock Controlled Timer Circuit
With this simple clock controlled timer, you will never again miss your favourite TV or radio programme. The TV or radio will switch on...
Miniature Strobe Light
Strobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and auditoria. The circuit of a battery operated...
Mobile Theft Alarm
This circuit works as a mobile anti-theft system. It produces a loud chirping sound whenever someone tries to take away the mobile and also works as a mobile charger.
Aquatic Probe
A number of environmental factors including light and temperature affect fish culture. The temperature of water has profound effect because fish cannot breed above...
Geyser Timer
This geyser timer circuit sounds an alarm after the set timing of 22 minutes when the water is heated up.
Geyser timer circuit
The circuit comprises...
Electronic Fuse
An absolute necessity of every electronics lab is a workbench power supply. The power supply should be regulated and protected against short circuit. Most...