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.
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...
RGB Bulb Using NE555 Timer
The main objective of this RGB bulb using 555 timer circuit is to produce different light colours with the help of NE555 timer IC...
Garden Solar Light
Many homes come with backyard gardens or open spaces, and adding a garden light can make these areas usable at night. But traditional lighting...
30W Audio Amplifier Using NE5534 and Darlington Transistors
There are many different audio power amplifier ICs to choose from, but designing an audio power amplifier using an operational amplifier (op-amp) and bipolar...
Fan Speed Increasing Regulator Using PIC16F73
Voltage dips in mains supply make fans run very slow, leaving you sweaty through hot summers, especially if you don’t own an air-conditioner (AC)....
Design and Analysis of A Single Stage Transistor Amplifier Using C++
Single stage transistor amplifierDesign GuidelinesSoftware ProgramDownload source code: click here
Designing a single-stage transistor amplifier requires numerous formulas to calculate various parameters, such as the...
Electronics Projects: Controlling a Stepper Motor Using a Rotary Encoder
Presented here is a project for controlling stepper motor using rotary encoder. It consists of a Raspberry Pi (Raspi) board, 5-pin rotary encoder, 5V...