Community Projects
Projects published below, have NOT been tested at Electronics For You Labs. But, that does not mean that they don’t work.
We invite YOU to try and test them, and share your feedback and suggestions for improvements.
We will be happy to recognise the good ones via Certificate of Recognition and a Surprise Gift, on a weekly basis….
Weight Machine
Eight years back I purchased a small bathroom scale from @Home ,Mumbai and it cost me a good amount of money then. It's a...
Wireless Control Of Servo Motor
I made my first robot when I was in college and always thought to make totally wireless. So the same I thought about making...
HV Generator for Microcontroller Projects
To drive small neon lamps or similar devices in your microcontroller/robotic projects, you need a high-voltage dc power supply for consistent and fast performance....
Wireless Video Surveillance Robot using Raspberry Pi
This project builds a Video Surveillance robot that can be controlled via wireless remote control and can be used for video surveillance also.
Video surveillance...
Laser Security System
Presented here is a 6v Laser security system that can be easily programmed for any password. This project powered using a mobile charger which...
Dual Bridge Driver On Expansion Module With L293P For Arduino
The short article describes simple but useful four-channel driver expansion module with L293P for Arduino. The board can be called power shield, motor shield...
Low-Cost PWM Module For Arduino Or Development Kit With MCU
This short article describes a simple circuit capable to convert a TTL/CMOS PMW signal to an analog signal. The circuit can be used as...
Digital Satellite Finder
This article describes a satellite finder that we can build ourselves to assist with aligning the satellite TV dish without having to take our...
Wristband Based GPS Navigation System
GPS and sensor technologies have been evolved over the past decade in the global market of transport and navigation. These technologies lead the world...
Micro-Solder Pot
To make a great solder joint, component preparation is a must. This sounds unimportant, but it is very important to clean the component leads,...
Low-Cost Universal Dual Channel Audio Checking And Troubleshooting Tool
Frequently, we are in need to do audio troubleshooting of electrical and electronic components, installations and equipment. E.g. we may need to check, test and evaluate:
...
Measuring The Charging And The Discharging Current Of The Battery
When we work with rechargeable battery it is useful to have the following functions:
measuring the charging current,
measuring the discharging current,
measuring voltage...
Multi Channel Hardware Driver for Embedded Systems
The real world embedded systems are controlling DC motors, stepper motors, electromagnetic relays, incandescent lamps, powerful LEDs, displays, inductors, transformers, long cables, etc.
On the...
Simple Universal AC Or DC Amplifier with OPA452/OPA453 And Transistors
Introduction
During the experiments with loudspeakers, systems with loudspeakers, transformers, public announcement systems, audio distribution lines and amplifies, etc, we are in need of audio...
Wi-Fi Controlled Robot Using Arduino UNO And Blynk
This Wi-Fi controlled robot can be controlled from anywhere using the ARMA IoT shield for UNO and the Blynk App which provides the user...
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...
Dual Universal Hardware Driver for Embedded Systems
Introduction
The embedded systems should drive different peripheral devices requiring significant electrical power.
A typical case is the DC motors, operating from 6V, 12V and 24V.
These...
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...