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.
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...
PEAK LEVEL MONITOR
Measurement of peak level is useful while testing an amplifier or a similar device. It is handy while testing a logic circuit, as it...
9V Converter Using Two AA Cells
Normally, 9V PP3 batteries last less than a couple of hours if used continuously. These cannot be used if the voltage is below 7.8V....
Electronic Water Alarm
Aburst water-supply hose of the washing machine, a bathroom tap that you forgot to close, or a broken aquarium wall may turn your house...
Door-Opening Alarm
Children are at a high risk of drowning in a swimming pool. Majority of accidents occur when children get into a pool unsupervised. Such...
Solid-State Two-Way Switch
Two-way switches, more profoundly known as staircase switches, are widely used when a load has to be controlled from two ends of the location....
USB-Powered PC Lamp
This white LED lamp lets you use your PC or laptop at night without disturbing others’ sleep. It produces a soft white light just...
Analogue Capacitance Meter
The principle of operation of this meter is based on pulse-width modulation. Larger the capacitance, higher is the pulse-width and vice-versa. The meter given...
Car Reverse Horn
This car reverse horn can be used with any vehicle having a 12V battery. Transistors T2 and T3 form an astable multivibrator (AMV) that...
Battery Deep Discharge Saver
This circuit can be used to ensure that a 12V sealed lead-acid battery does not go into the condition of deep discharge. The circuit...
Pulse Rate Meter
Here is a meter to measure the human heart rate. The pulses are picked up around the wrist (just as it is examined by...
Automatic Bathroom Lamp
This simple circuit can be used as an automatic bathroom lamp controller. It disables the bathroom lamp at daytime and enables it at night....
Door Alert
This circuit can be operated by any kind of switch. For example, it can be used in a shop to warn that a customer...