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.
Peak Hour Timer
Electrical appliances like refrigerators and air-conditioners consume heavy current if the line voltage drops during the peak hours between 6 pm and 9 pm....
DIY Touch Alarm
This is a new type of touch alarm that uses an RF oscillator at its input. One special feature of this touch alarm is...
DIY Electronic Heart
With this electronic heart glowing on and off, you are sure to steal the heart of that special someone. The circuit uses an NE555...
CAR ANTI-THEFT GUARD
Here is an easy-to-build car anti-theft guard. The circuit, shown in Fig. 1, is simple and easy to understand. When key-operated switch S2 of...
GLOW PLUG CONTROLLER
In diesel engines, the air in the cylinders is not hot enough to ignite the fuel under cold conditions. Therefore each cylinder of these...
Cordless Multi-Door Alarm
Thwart the attempt of burglary by detecting intrusion with this alarm circuit. Each door is protected by a separate circuit built around an independent...
MOBILE BUG
This handy, pocket-size mobile transmission detector (Mobile Bug) can sense the presence of an activated mobile phone from a distance of one and a-half...
Line-Powered Two-Tone Ringer
Need often arises for having an extra telephone ringer in another room to alert you of an incoming call. A low-cost, 2-tone ringer IC...
DIY Laptop Theft Alarm
Protect your valuable laptop against theft using this miniature alarm generator. Fixed inside the laptop case, it will sound a loud alarm when someone...
DIY Motorbike Anti-Theft Alarm Using Simple Components
This simple-to-build alarm can be fitted in bikes to protect them from being stolen. The tiny circuit can be hidden anywhere, without any complicated...
Remote-Controlled Firecracker Igniter for Safe Celebrations
Firecrackers are normally ignited by using a matchstick or a candle. You have to run away quickly after igniting the fuse of the firecracker....
Build a Flashing UFO Toy with Lights and Sound Effects
This unidentified flying object (UFO) is nothing but an electronic toy depicting the fantacy. It comprises three separate sections, viz, rim flasher, dome flasher...
Automatic Darkness-Controlled Lighting System
Make tubelights automatically switch on at night and switch off in daytime using this automatic control system. Automatic darkness-controlled lighting system means that whenever...
Contactless Telephone Ringer
This fully transistorised, simple circuit designed as a contactless telephone ringer provides an indication of incoming telephone call at a remote site like kitchen...
DIY Flashing Safety Light Circuit Using LEDs for Vehicles
During poor visibility, i.e., when there is fog, or at dawn or dusk, or when your vehicle gets stalled on a lonely stretch of...
Automatic Wash Basin Mirror Lamp Controller
In restaurants, auditoria and even homes, many a times we forget to switch off the wash basin mirror lamp after use. The circuit given...
Auto Muting Circuit During Phone Calls
Telephone conversation can be made disturbance-free using this simple circuit. As soon as you lift the telephone handset to converse, the TV, music system...
DIY Doorbell That Sounds Like a Parrot—No IC Required!
Here is a mains-operated door-bell that produces parrot-like sweet voice without requiring any musical IC. The circuit is cheap and easy to construct. The...