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.
Photodiode Based Fire Detector
This ultra-sensitive photodiode based fire detector protects your electronic devices like computer and television set. It uses a photodiode as the fire sensor and...
Audio Controlled Running Light
This mains operated audio controlled running light can be used in discotheques. The lamps glow in running sequence as per the sound of music....
Melody Generator With Instrumental Effect
This is a circuit for a melody generator that can provide various modes of melodies along with instrumental effect that can be chosen through dip switches.
Pulse Generator
This pulse generator circuit is very useful while checking/operating counters, stepping relays, etc. It avoids the procedure of setting a switch for the required...
PC Temperature Controller
Here is a simple temperature controller that turns your personnel computer (PC) off when the temperature of the PC increases beyond the optimal temperature value. Some of the larger integrated circuits become quite hot and if the temperature inside the PC
Musical Light Chaser
This music operated lighting effect generator comprises five sets of 60W bulbs that are arranged in zig-zag fashion. The bulb sets glow one after...
Ultrasonic Proximity Detector
This ultrasonic proximity detector comprising independent, battery-powered transmitter and receiver sections makes use of a pair of matched ultrasonic piezoceramic transducers operating at around...
Programmable LED Indicator
In this circuit, IC CD4017 has been used to program a bicolour LED indicator in 10 different modes which can be selected with a single push-button switch.
Wire Break Alarm With Delay
Here is a simple circuit of wire-break alarm that activates after a delay of 15 to 30 seconds. When the thin-wire loop running across the entrance door is broken, the alarm sounds after a delay of 15 to 30 seconds, the time period set through VR1.
Automatic Switch-off Battery Charger
Presented here is an automatic switch-off battery charger based on a 555 timer IC. This smart charger automatically switches off when your rechargeable batteries...
Car Porch Guard
Protect your costly vehicle from theft using this electronic car porch guard system. The system immediately switches on the porch lamp and sounds a...
Pressure Sensitive Alarm
Here is a low-cost, pressure sensitive alarm. The alarm uses a home-made pressure sensor, which works as a variable capacitor using two copper-clad boards...
Electronic Ignition System for Old Cars
In older carbureted cars, the contact breaker (CB) point ignition system is used to fire the spark plugs. You can convert the ignition system...
Security System Switcher
This is a circuit for a security system that can detect movement of any intruder through a transducer and activate any security device through a relay.
Digitally Controlled Precision Amplifier
This is a circuit for a precision amplifier with digital control that can provide a gain upto 100.
PC Multimedia Speaker
This is a circuit for USB compatible low cost and low power multimedia speakers for PC.
Stabilized Power Supply for Prototyping
This stabalised power supply circuit may be directly connected to 230V AC mains to derive output voltages of 3V to 12V DC for connection to the prototyping board.
Solar Lighting System
The world cannot continue to rely for long on fossil fuels for its energy requirements. Fossil fuel reserves are limited. In addition, when burnt,...