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.
Precision 1Hz Clock
This precision clock uses just two ICs and one junction field-effect transistor (JFET) in conjunction with a commonly available crystal and a handful of...
RJ45 Cable Tester
Described here is a simple RJ45 cable tester circuit which can be used for testing the RJ45 network cables. The circuit can check...
8 Digit Code Lock for Appliance Switching
This 8 digit code lock is useful for appliances requiring exclusive or authorised use by those who know the preset code. If desired, the...
Light Operated Internal Door Latch
Using this light operated door latch circuit, you can close or open the door of your room remotely from your bed. You just have...
Cellphone Controlled Audio/Video Mute Switch
The circuit automatically disconnects power supply to the audio/video system whenever the mobile handset is lifted off the holder for making or receiving a call.
Dome Lamp Dimmer
A reading light inside the car greatly assists passengers during night, but often the interior dome lamp is too bright and distracting to the...
Low Resistance Continuity Tester
Continuity testing is the act of testing the resistance between two points. If there is very low resistance (less than a few Ωs), the...
Sensitive Optical Burglar Alarm
Burglar alarms have become standard equipment in stores and other businesses, and they're becoming increasingly common in private homes as well. If you've ever...
Emergency Ultraviolet Light
This emergency ultraviolet light circuit serves both as an emergency light (using a 6W fluorescent tube) and an ultraviolet light (using a 6W ultraviolet...
Clap Operated Electronic Switch
Here’s a simple clap operated electronic switch. Using this switch, you can turn on any appliance by clapping five times and turn it off...
Panel Frequency Meter
Here’s a simple panel frequency meter to measure the frequency of 230V AC mains. When you connect it to the 230V AC line, the...
Touch Dimmer
By simply touching this touch dimmer you can increase the light intensity of incandescent lamps in three steps. The touch dimmer is built around...
Fuse cum Power Failure Indicator
Fuse blowing is a common problem, but is so tedious to go and check because every time it may not be blown. Here is...
Zener Diode Tester
This zener diode tester can be used to check zener diodes of 3.3V to 18V. The breakdown voltage of the unknown zener diode is...
Flashing Beacon
A flashing beacon has many uses. It can be employed as a distress signal on highways or as a direction pointer for parking lots,...
Intruder Radio Alert System
Consider a situation where a burglar has entered your house and snapped the telephone wires, leaving you with no means of communication with the...
Automatic Headlight Switcher
Automatic headlamps are the latest convenience in today's cars. These eliminate the need for the driver to manually switch on or switch off the...
Crystal Based 50Hz Generator
Here is a simple crystal based 50Hz generator circuit that generates 50Hz frequency using a crystal. It produces alternating 50Hz pulses with 50 per...