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.
Remote-Controlled Fan Regulator
Using this circuit, you can change the speed of the fan from your couch or bed. Infrared receiver module TSOP1738 is used to receive...
Briefcase Alarm
This miniature alarm unit protects your valuables from theft by sounding an alarm when somebody attempts to pick up your briefcase. It is a...
DTMF Receiver IC MT8870 Tester
Today, most telephone equipment use a DTMF receiver IC. One common DTMF receiver IC is the Motorola MT8870 that is widely used in electronic...
Farmhouse Lantern-Cum-Flasher
This circuit uses a dual op-amp IC LM358 and two transistors. It can be powered by a 6V maintenance-free rechargeable battery or a lead-acid...
Logic high/low Indicator
This logic high/low indicator circuit comprises two ICs. One is hex inverter IC 7404 (IC1) and the other is a bistable multivibrator built around...
Simple Short-Wave Transmitter
This low-cost short-wave transmitter is tunable from 10 to 15 MHz with the help of ½ Jgang condenser VC1, which determines the carrier frequency...
Simple Transistor Type and Lead Identifier
A bipolar junction transistor (BJT) has three regions, of which the emitter and the collector are made of the same type of semiconductor (‘n’...
Twinkle Twinkle X’mas Star
Christmas just would not be Christmas if you do not put a flashing star on your Christmas tree. Here is the circuit of such...
Picnic Lamp
You can take this white LED based night lamp on your picnic outings. The lamp has sound trigger and push-to-on facilities and gives ample...
FM Adaptor for Car Stereo
If your car has an FM radio with stereo output but no inbuilt cassette player, this circuit will come handy for listening to your...
DC-TO-DC Converter
Here’s a low-cost DC to DC converter circuit that converts 6V DC into 12V DC. It uses no transformer and is easy to construct...
MOSFET based Preamplifier for FM Radio DXing
FM transmissions can be received within a range of 40 km. If you are in fringe areas, you may get a very weak signal....
Non-Contact Power Monitor
Here is a simple non-contact AC power monitor for home appliances and laboratory equipment that should remain continuously switched-on. A fusefailure or power breakdown...
Infrared Interruption Counter
Most optical interruption counters make use of a light bulb with light-dependent resistor (LDR) or ordinary phototransistor as the sensor. The interruption counter work...
Little Door Guard
If some intruder tries to open the door of your house, this circuit sounds an alarm to alert you against the attempted intrusion.
The circuit...
Power Failure And Resumption Alarm
This circuit gives audio-visual indication of the failure and resumption of mains power. The circuit is built around dual timer IC LM556. When mains...
Solar Bug
This Solar Bug circuit takes power from a small solar panel and then produces a sound in a buzzer momentarily when the relaxation oscillator...
Accurate Foot-Switch
Certain industrial controls require accurate switching operations. For example, in case of a foot-switch for precise drilling work, even a small error in switching...