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.
Smart Foot Switch
This is a circuit that can be used to switch on and off two devices alternatively or both together by using switches. Two switches are for each device to turn them on and switching off other device, also it has a separate switch with an option to turn on both the devices simultaniously.
Automatic Soldering Iron Switch
Soldering irons are most often used for installation, repairs, and limited production work in electronics assembly. High-volume production lines use other soldering methods. You...
Ding-Dong Bell
A doorbell is a signalling device typically placed near a door to a building's entrance. When a visitor presses a button the bell rings...
Programmable Timer for Appliances
This is a circuit for a programmable timer that can be used to switch on/off a device after a pre-set time period that can be varied from 8 seconds to 2 hours. It works in two modes, cyclic mode and off mode that can be switched by using a slide switch.
Multiband Transmitter
A radio frequency oscillator is at the heart of all radio transmitters and receivers. It generates high frequency oscillations, which are known as carrier...
Versatile LED Display
This versatile LED display circuit uses an erasable programmable read-only memory (EPROM) to display various light patterns on LEDs. Since bicolour LEDs (comprising green...
Chant Player
Chanting combines singing and music with mantras. The sweetness of chanting stills the mind, dissolves worries and opens the heart. Chanting forms an integral...
Electronic Street Light Switch
Here’s a simple and low-cost street light switch. This switch automatically turns on the light at sunset and turns it off at sunrise. The...
Sound Operated Intruder Alarm
When this sound operated intruder alarm detects any sound, such as that created by opening of a door or inserting a key into the...
Twilight Blinker Lamp
During sunset or sunrise, the ambient light is not adequate to lead you through the open doorway or make your way around obstructions. To...
Multipurpose White LED Light
Standard fluorescent lamps and their smaller versions called compact fluorescent lamps (CFLs) radiate light in all directions (360°) and tend to increase the room...
Soldering Iron Temperature Controller
When soldering, sometimes the need arises to control the temperature of the soldering iron. It is not possible to change the solder iron every...
Noise Meter
Normally, sound intensity up to 30 dB is pleasant. Above 80 dB, it becomes annoying. And if it goes beyond 100 dB, it may...
Automatic Heat Detector
This automatic heat detector circuit uses a complementary pair comprising NPN metallic transistor T1 (BC109) and PNP germanium transistor T2 (AC188) to detect heat...
Musical Alarm Timer
A timer is a specialised type of clock for measuring time intervals. Here we present a simple musical alarm timer that can be used...
Low-Cost Hearing Aid
Commercially available hearing aids are quite costly. Here is a low-cost hearing aid circuit that uses just four transistors and a few passive components.
On...
Keychain Light
A keychain light with white LED comes in handy to help you at your front door or search your valuables in the dark. The...
PC Based Candle Igniter
Here’s a PC based candle igniter system that lets you light up a candle using matchsticks by just pressing the ‘Enter’ key on the...