Thursday, May 19, 2022

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….

audio power amplifier

Simple Audio Power Amplifier With NE5534/А And Darlington Transistors With Up To 30W Of...

These days there a lot of audio power amplifiers in integrated circuits (ICs). But it is still interesting to produce audio power amplifiers with operational amplifiers (OAs) and with output power...

Make Your Own Arduino-Based Oxygen Concentrator

In the world highly affected by pandemic there is a huge spike in covid infection cases. With limited resources this fight against Covid 19 virus is an unexpected challenge for the...

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: microphones loudspeakers headphones audio filters preamplifiers the...
solid state relay switch

DC-AC SSR Switch for Microcontroller/Robotic Projects

SSR stands for Solid State Relay. SSRs are not very different in operation from traditional electromagnetic relays that have movable contacts. An electromagnetic relay ( EMR) generates electromagnetic force when input...
HV generator circuit

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. This circuit allows you to make a...
satellite finder circuit

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 receiver outside. We are proposing a signal...
Electric Ventilator

Electric Ventilator For Hospital Use

Now the pandemic COVID 19 caused by Corona virus is spreading fast throughout the world. The Corona virus has taken up mutation and the second wave is spreading along various countries...
ports on the board

ATM Machine using RFID and GSM

The main objective is to design a MODEL ATM machine using RFID and GSM technologies. Here we design a model of how really ATM machine works, with some limited features. Also...

Object detection – ESP32 Camera Acts As A sentry

The ESP32 Camera costs barely INR:650 . It can take pictures at a 2MBPS rate, and it can send pictures up to 200 meters distance using a small antenna on 2.4...
reaction time game author prototype

Reaction Time Game

This  reaction time game tests the time taken by two players to react, and declare the fastest one as a winner. To do this I am using external interrupts and pin...

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