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.
Bell-Cum Light Controller
This is a circuit for a bell and light controller that consists of a doorbell with porch light. When someone presses one switch, the bell rings and the light turns on for 3 minutes. Another switch turns on only the bulb for 3 minutes.
PC Table Lamp
This useful circuit is built around well-known timer IC TLC555. It activates an electric bulb when your PC is switched ‘on’. When you shut down the PC, the lamp also automatically turns ‘off.’
Seismic Sensor
This circuit detects the movements of humans or animals. Whenever it detects any movement, a buzzer starts beeping and a red LED starts to blink.
Water Tank Overflow Indicator
Simple Overflow Stopper For Water Tanks
Stop Tank Overflow With Wireless Water Level Indicator and Controller
Water Level Indicator Circuit (LED...
Mains Supply Failure Backup Light
In the event of a sudden blackout at night, this mains supply failure backup light switches on automatically to provide sufficient light for around...
Versatile Power Supply
Using this versatile power supply circuit, you can obtain the following voltages (approx.) at a current limited to one ampere: 3.3V, 5V, 6V, 9V,...
Atmel AVR ISP Dongle
Atmel’s AVR microcontroller chips are in-system programmable (ISP), i.e. these can be programmed directly in the target circuit. A special programmer software is used...
Smart Switch
To switch on the mains voltage, either a mechanical switch or a relay offers a simple solution. However, the relay and its associated components...
Transistor Tester
With this transistor tester, you can test both npn and pnp transistors using this circuit. The circuit indicates whether the transistor is good, open...
Portable Lamp Flasher
Here is a high power incandescent electric portable lamp flasher. It is basically a dual flasher (alternating blinker) that can handle two separate 230V...
Overspeed Indicator
This speed indicator circuit is designed for indicating over-speed and direction of rotation of the motor used in mini hand tools, water pump motors,...
220V Live Wire Scanner
Presented here is a 220V live wire scanner. The clock input of the IC is connected to a wire, which acts as the sensor....
Telephone Conversation Recorder
This is a circuit for a telephone conversation recorder that can record conversations over the telephone in a tape recorder...
Automatic Dual Output Display
This circuit lights up ten bulbs sequentially, first in a direction from first bulb to last bulb and then in a reverse direction.
Light Dimmer that Doubles as Voltmeter
Measure AC mains voltage without using a multimeter. All you need to do is to slightly modify the light dimmer fitted at the base...
Reaction Time Game
This reaction time game tests the time taken by two players to react, and declare the fastest one as a winner. To do this...
Simple USB Interface Signal Monitor
Presented here is a simple, low-cost USB interface signal monitoring circuit. It can be used to monitor signal activity for most of the USB...
Getting Started With NodeMCU Development Board For IoT
Since Internet of Things (IoT) projects are now quite popular, I recently bought a NodeMCU board to try IoT application development. The NodeMCU development...