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 Cellphone Holder
This smart cellphone holder makes sure that you don’t forget to carry your mobile phone. Fitted in the car, it keeps searching for the...
Sensitive Vibration Detector
This sensitive vibration detector is realised using readily available, low cost components. One of its many applications is in a rolling shutter guard for...
Digital Counter
A counter whose logical output increments in steps on receiving clock pulses is used for a variety of counting and timing applications. It is at the heart of digital clock circuitry and other similar timing devices.
Drinking Water Supply Alarm
The State Jal Boards supply water for limited duration in a day. Time of water supply is decided by the management and the public...
Mock Alarm with Call Bell
Here is a fully automatic mock alarm to ward off any intruder to your house. The alarm becomes active at sunset and remains ‘on’...
Heat Sensitive Switch
At the heart of this heat sensitive switch is IC LM35 (IC1), which is a linear temperature sensor and linear temperature-to-voltage converter circuit.
The converter...
Laser-Guided Door Opener
This automatic door opener can be made using readily available components. The electromagnetic relay at the output of this gadget can be used to...
Optical Remote Switch
Using this optical remote control, you can switch on/off any electrical or electronic load. Like any remote control system, it has a mini transmitter unit and a receiver unit to activate the relay.
Infrared (IR) Illuminator
Infrared (IR) illuminators are widely used to improve the image-capturing quality of security cameras fitted in dark zones. Just like our eyes, cameras also...
Low-cost Intercom Circuit Using Transistors
This is a circuit for a low cost intercom that is made by using transistors.
Sound Operated Lamp Switch
This inexpensive, fully transistorised sound operated lamp switch is very sensitive to sound signals and turns on a lamp when you clap within 1.5...
Smart Battery Protector Using a Shunt Regulator
The life expectancy of a battery dramatically reduces when it is discharged below the minimum recommended battery voltage. You must disconnect the load before...
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.