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.
Automatic Evening Lamp
Presented here is a solution for switching off outdoor lamps even when you are not at home. The lamp turns on in the evening...
Simple Adjustable Staircase Waveform Generator
Staircase signals find many applications in the field of electronics, such as in television systems, telemetry, and analogue and digital communications. Here is a...
Part 3 of 3: Using AVR Microcontroller For Projects
In continuation of the embedded control applications explained in Part 2, let’s now examine the use of inbuilt functions of AVR ATmega8535 (such as...
Monitor for 6V/12V Batteries
Rechargeable batteries of 6V and 12V are used in a large number of applications. It is imperative that these are maintained properly to get...
Laser Based Security Lock
Presented here is a security system that uses an inexpensive laser torch which is usually available with a key ring. The advantage of this...
Simple Low-Power Audio Amplifier
The small-signal amplifier is generally referred to as a voltage amplifier because it usually converts a small input voltage into a much larger output...
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...