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.
Infrared Toggle Switch
This infrared toggle switch can be controlled by any TV/VCR remote operating at 38kHz frequency. The circuit uses readily available, low-cost components and can be assembled on a small veroboard.
Simple HF Power Amplifier
Here is an inexpensive but powerful high frequency power amplifier for the 40m (7MHz) band. The circuit accepts only 20-30mW RF power and amplifies...
Teleconferencing System
This is a circuit for teleconferencing system that can be used to conference two telephone calls on two separate telephone lines.
Infrared Bug
This infrared bug circuit can be used to detect the presence of modulated infrared signals in its vicinity from any electronic source, for instance,...
Smart Vibration Sensor
Machines nowadays require optimum parametes to operate at their best. Some operating conditions concerns include themperature extremes, magnetic intereference, vibration & electromagnetic intereference among...
Electronic Ludo
In this electronic version, the players need to press a push-to-on switch instead of throwing the six-surface dice. When the switch is pressed momentarily, the 7-segment digital counter displays a number immediately.
Christmas Lights Using LEDs
This is a circuit that can be used as for festive decorations. It contains eighteen LEDs that can be assembled as one's wish.
Easy Transistor Tester
Using this easy transistor tester circuit, find out whether a given transistor is good or bad before soldering it. You can also identify npn...
USB Power Booster
The USB serial bus can be configured for connecting several peripheral devices to a single PC. It is more complex than RS232, but faster...
Accurate 1Hz Signal Generator
Accurate 1Hz squarewave pulses are required in stopwatches and other digital circuits. Here is a low-cost, general-purpose 1Hz signal generator without using a crystal oscillator.
Ultrasonic Burglar Alarm
This unique ultrasonic burglar alarm makes use of the invisible, inaudible ultrasonic sound beam to detect movements. Ultrasonic transducers operate at maximum efficiency when...
Low-cost Night Lamp
This simple, low-cost night lamp automatically activates at night and deactivates in the daytime. It incorporates battery charging circuit with protection against over-charging and deep-discharge.
Current Sensor
The circuit presented here senses the flow of electricity through the appliances and generate an audible beep after every fifteen minutes to indicate the ON state of device.
Touch Based Doorbell
This touch plate doorbell makes use of enhancement-mode MOSFETs forming part of CMOS quad NAND gate CD4007B in conjunction with a detector and Darlington driver stage.
Remote Emergency Alarm for Unmanned Lifts
In unmanned lifts or elevators, sudden power failure cannot be detected from the remote operating room, and this can prove dangerous for the lift...
Bicycle Indicator
The electronic bicycle turn indicator unit described here uses low-cost components and is a good substitute to many commercially available versions. It works in...
Electronic Dice
This electronic dice has no chance of wear and tear but all the features of a wooden or plastic dice used for Ludo game.
Electronic...
Locker Guard
Protect your valuables from burglary using this simple locker guard circuit. It generates warning beeps when someone attempts to open the locked safe. The...