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.
Converting the Stereo Audio Distribution Buffer into Stereo Audio Distribution Amplifier
The stereo audio distribution buffer published on page 94 of the July 2013 Edition of EFY can be converted easily into stereo audio distribution...
Low Cost High Impedance Buffers for Oscilloscopes and Voltmeters
Most of the low cost digital oscilloscopes and voltmeters have input resistance around 1 MOhm and input capacitance around 100pF. But in many case...
Two-Watt TBA820M AF Amplifier
Here is a simple AF amplifier project based on TBA820M IC. This amplifier can deliver two-watt output power with 8-ohm speaker using a 12V...
Bipolar Power Supply with LM317T and with LM337T Controllable with Stereo Potentiometer
LM317T and LM337T are well known and low cost adjustable voltage regulators with current limiting up to around 1.5A and power dissipation up to...
Wireless-Powered LED
Wireless power is transferred from transmitter to receiver coil using inductive coupling principle. For wireless power transfer to work efficiently, frequency of the transmitter...
Simple Audio Power Amplifier With NE5534/А And Darlington Transistors With Up To 30W Of Output Power
These days there a lot of audio power amplifiers in integrated circuits (ICs). But it is still interesting to produce audio power amplifiers with...
Simple Low-Noise Audio Distribution Amplifier
This article describes a low-cost low noise audio distribution amplifier based on hybrid or mixed technology. Input to the amplifier is from low-noise, high-gain npn...
Multifunction Rechargeable Clock
Building clocks are one of the interesting and easiest projects that can be seen among hobbyists and makers. Presented here is a multifunction rechargeable...
Daytime Running Lights Controller
Auto makers have been gradually switching to light emitting diode (LED) lighting for automotive headlamps because of its features such as high efficiency and...
Anti-Theft Alarm for Vehicles
This simple and inexpensive anti-theft alarm circuit for vehicles sounds an alarm simulating a police siren whenever someone attempts theft of your vehicle. The...
Low Cost Dual Channel Active AC Analog Probe
Introduction
When we are experimenting with AM receivers for LW, MW and SW we are in need of high impedance analog probe with low input...
LM1875 Based Simple Amplifier
LM1875 is a low cost and very popular and useful integrated circuit (IC). It is designed to be stable with gain higher than ten....
Transistorized Microphone Preamplifier With Band Pass Filter
Introduction
The signal from most of the microphones should be amplified before to be send to the interconnection cables.
In order to reduce the noise of...
Sound Operated Device Control System
In movies like Ironman and Players, it is shown that appliances are operated by human speech or sound. Similar concept of a sound operated...
Arduino Based RGB Colour Code Generator
Red, green and blue (RGB) are the basic colours for generating various other colours by mixing colours in a particular proportion. This technique is...
Webcam View Illuminator
By setting up a webcam view illuminator over your laptop’s webcam your online conversations can become more enlightening. This clip-on light improves the quality...
GPS Distance Meter
Presented here is a project based on Global Positioning System (GPS) and ATmega328P-PU microcontroller to measure the distance between two points using Haversine formula....
Raspberry Pi As World Webcam Server
While it is not possible to always keep an eye on your home or business while you are away we can make a world...