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.
SMPS Spark Suppressor
This circuit protects the power plug of a switched-mode power supply (SMPS) against sparks that may damage its contact terminals. It normally happens when...
Security Alarm
Thwart any attempt of burglary in your house using this alarm circuit. When someone opens the door of your room, it sounds an alarm...
Dual-Tone Horn
This circuit generates two different frequencies and mixes these to produce a balanced ringing tone, which can be used in burglar alarms or call...
LAPTOP AUDIO AMPLIFIER
Usually, the audio output from a laptop’s built-in speakers is low. A power amplifier is required to get a high volume. Here is a...
Interfacing A Graphics LCD With The Microcontroller
Today, most of the electronics devices come with a liquid crystal display (LCD). Even new fridges have it. It is interesting as well as...
AT89C51 Based DC Motor Controller
Motion control plays a vital role in industrial automation. Manufacturing plants in industries like chemical, pharmaceutical, plastic and textile, all require motion control. And...
Digital Thermometer-Cum-Controller
This standalone digital thermometer controls the temperature of a device according to its requirement. It also displays the temperature on four 7-segment displays in...
Microcontroller-Based School Timer
The basic requirements of a realtime programmable timer generally used in schools and colleges for sounding the bell on time are:
• Precise time base...
Remotely Programmable RTC Interfaced Microcontroller for Multiple Device Control
This project based on Atmel AT89C52 and Dallas real-time-clock (RTC) chip DS12887 can be used to control and remotely program the switching operation of...
DC Motor Control Using PWM
Small DC motors are efficiently controlled using pulse-width modulation (PWM) method. The circuit described here is built around an LM324 low-power quad-operational amplifier. Of...
SAFE CIGARETTE LIGHTER POWER SOCKET
Cigarette lighter sockets available on the dashboards of some vehicles act as a heat source to light cigarettes. Besides, these can power electronic gadgets...
Versatile Battery Charger
This transformer-based versatile battery charger circuit can be used to charge any battery, provided the transformer rating is higher than the battery rating. Normally,...
Electronic Glow-Worm
Here is a circuit that simulates the chirping and glow of a glow-worm bug. The circuit is built around timer IC 7555 (IC1), which...
Air Ioniser
This air ioniser is built around an NE555 timer IC which is configured in astable mode.
The circuit is powered by a 12V battery, which...
Single Control Switch For Fan And AC
Here is an electronic switch that can be used to switch on both the air-conditioner as well as fan of your room, one by...
LED-Based Running Display
Here is a circuit that creates an eye-catching running display effect using LEDs. It can be used to light up borders of animations, pictures,...
PORTABLE SIGNAL WAND
Flashing lights have varied applications. For example, travelers can use these as warning beacons on highways to catch the attention of the public in...
Remote Phone-Bell Ringer
Did you ever miss an important telephone call simply because you were away where you couldn't hear the phone ringing? This should not happen...