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.
Desktop LED Emergency Light
You can make an ultra-simple desktop emergency light using ‘discharged’ batteries. You know that battery cells still have considerable energy left in them even...
Speed Controller for Small Cooling Fans
Small cooling fans are used in some equipment for cooling semiconductor devices. The circuit given here is of a simple automatic speed controller for...
10 More Amazing Circuit Designs For Awesome Projects
Here's bringing 10 more circuit designs, to experiment, try and enjoy. Happy making!
Atithya Amaresh
1. Earth Fault Indicator
In mains-powered equipment, exposed metal parts are connected...
Difference Counter for In and Out Gates
Sometimes, we need to know whether someone is still inside a building before it is locked. And if so, how many persons are still...
Efficient 5V Relay Driver
This design idea outlines a method to use an analogue switch and discrete components to reduce the power dissipated in relay actuation. Presented here...
Precision Null Detector
Precise determination of null point in AC/DC bridges helps us to evaluate accurate values of circuit components like L and C. Here’s a null...
Auto Snooze for Digital Alarm Clocks
Alarm clocks are made to wake you up. However, it is quite bothersome to hear the alarm continuously until you get up and put...
Simple Tester for 74xx04 and 74xx14 ICs
The integrated circuits (ICs) 74xx04 and 74xx14 are very frequently used and reused during circuit design. Here xx stands for HC, HCT, AC and...
Mains Operated Remote Control Tester
This handy remote control tester responds to the signal received from any infrared hand-piece (IR remote control).
Circuit and working
Fig. 1 shows the circuit diagram...
Smoke Extractor
Here is a low-cost circuit that automatically extracts solder fumes while you assemble a circuit, thereby saving you from inhaling the same. The solder...
12 Android Apps for Electronics Engineers
Here are 12 awesome android apps for electronics engineers that can be used on your phone to get acquainted with electronics while on the...
Subwoofer for Cars
This system needs to be attached to an existing car stereo amplifier to add extra 'boom effect' to the music. It has a dedicated...
Multi-Tone Configurable Alarm
Presented here is a multi-tone configurable alarm that can be activated by temperature and other physical parameters. Its output tone can be selected through...
Medicine-Time Reminder
We are all so busy with our daily lives that we forget to take our medicines on time, which can have several ill effects...
Automatic Room-lock and Lights circuit
This circuit counts and indicates up to nine persons present in the room and automatically locks the door and switches off lights as soon...
Rotation Counter
Presented here is a simple rotation counter which helps you measure the revolutions per minute (rpm) of any rotating object. As the project requires...
Temperature Sensing Diodes Selector
Low-cost semiconductor diodes such as 1N914, 1N4148 and 1N400X can be used as temperature sensing diodes in applications where high accuracy is not required....
10 Free eBooks On Hardware Design And Architecture!
Studying hardware design and architecture? Here are some free ebooks to help you out.
Atithya Amaresh
Investing on courses, certification and books can be tough on...