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.
Digital Mains Voltage Indicator
This is a circuit for a digital mains voltage indicator that displays main voltage in the form of a LED bar graph with 16 LEDs. The first LED indicates voltage level at 50 V and the 16th LED shows voltage level for 280 V.
Mobile Phone Multipower Unit
Most of the mobile phone complaints are related to the power supply. This is mainly because of improper charging and use of non-recommended chargers...
DC Motor Control Using Single Switch
This is a circuit that controls a DC motor to run it in clockwise, anti clockwise direction and to stop it using a single switch. It has three LEDs that indicate the status of motor; stopped, forward rotation and reverse rotation respectively.
Frequency Counter
A frequency counter measures the frequency of an input signal. These are commonly used in laboratories, factories and field environments to provide direct frequency...
Electronic Thermostat For Fridge
An electronic thermostat is a standard equipment for sensing the temperature of a system and maintaining it at a pre-defined point. It is a...
Simple Touch Sensitive Switch
A touch switch is a type of switch that only has to be touched by an object to operate. It is used in many...
Infrared Motion Sensing Relay Switch
This IR motion sensor relay switch circuit is designed for use with all kinds of medium-power automobile/domestic 12V DC loads...
Infrared Remote Control Timer
Presented here is a infrared remote controlled timer circuit. The circuit comprises two sections, namely, the transmitter section and the receiver section. Fig. 1...
Simple Video Amplifier
There are times when you want to view the video clips taken by your camera on your TV. You can do so by interfacing...
Multiple Appliances Keypad Control
This multiple appliance keypad control circuit employs DTMF technique to switch on/off up to ten appliances. It can be modified to operate up to...
Electric Shock Gun
This is a fantastic circuit for self-protection. In case a burglar intrudes your house, you can use this electric shock gun as a weapon...
Sound Scanner
This novel sound scanner sweeps all sound vibrations in its vicinity and converts them into audible beeps. It can sense sound vibrations up to...
Simple Smoke Detector
This simple smoke detector is highly sensitive but inexpensive. It uses a Darlington-pair amplifier employing two npn transistors and an infrared photo-interrupter module as...
Economical Pump Controller
This automatic pump controller eliminates the need for any manual switching of pumps installed for the purpose of pumping water from a reservoir to...
0-100°C Temperature Detector
Here’s a temperature detector system capable of remote temperature reading without transmission losses in the conditioning circuit. The IC AD590 (IC4) is used as...
Intruder Detector Using Laser Torch
Here is a simple, low-cost intruder detector using laser torch to detect the intruder. The laser beam is produced using a 3V DC or...
Low-Cost Hearing Aid Using IC 741
This low cost hearing aid circuit offers the advantages of high sensitivity, low current consumption and light weight.
Audio signals are sensed by the condenser...
TV Pattern Generator
This single-IC TV pattern generator is useful for fault finding in TV sets. You can correct the alignment of the timing circuits of the...