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.
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...
Mains Interruption Counter with Indicator
This mains interruption counter circuit counts mains supply interruptions (up to 9) and shows the number on a 7-segment display. It is highly useful...
Resistance Measurement Using Sample and Hold Method
A sample and hold circuit, as the name implies, samples an analogue input signal and holds its value until the input is again sampled....
Digital Thermometer
This digital thermometer can measure temperatures up to 150C with an accuracy of +_1C. The temperature is read on a 1V full scale-deflection (FSD)...
Solidstate Signal Lamp
This solidstate signal lamp is a good alternative to revolving mechanical signaling lamps used in ambulances. It uses ultra-bright blue LEDs for signaling. However,...
PC Driven LED Display
Here is a PC driven LED display circuit to generate sequentially running light effects using a simple program written in C. The output of...
Parallel Telephone with Secrecy and Call Prevention
This parallel telephone circuit provides secrecy when two or more telephones are connected in parallel to a telephone line. The circuit also prevents incoming...
False Triggering Eliminator for Timer 555
Normally, false triggering of timer IC 555 takes place during power on, resulting in unwanted output, which starts the timer’s time cycle. The circuit...