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….

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 market we can find large variety of...
Universal AC Or DC Amplifier

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 amplifier capable of providing more than 60Vpp...
Wi-Fi controlled robot

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 interface. Overview Simple WiFi Controlled Robot Using ARMA IoT...

Converting the Stereo Audio Distribution Buffer into Stereo Audio Distribution Amplifier

The stereo audio distribution buffer published on page 94 of July 2013 Edition of EFY can be converted easily into stereo audio distribution amplifier. That will add gain and will give new...

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 motors may require up to 3A average...
low cost high impedance buffers circuit

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 we are in need of input resistance...
Bipolar power supply

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 around 20W. It is useful to have...
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...
Author's prototype of the Multifunction Rechargeable Clock

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 clock unit that not only functions as...
Active AC analog probe

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 capacitance, e.g. well below 20pF. The required input...

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