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Prototypes

A prototype is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from.

Low-Cost PWM Module For Arduino Or Development Kit With MCU

This short article describe simple circuit capable to convert a TTL/CMOS PMW signal to analog signal. The circuit can be used as extension shield for Arduino, with simple MCU or with TTL/CMOS...
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...

Wristband Based GPS Navigation System

The GPS and the sensor technologies have been evolved over the past decade in the global market of transport and navigation. These technologies lead the world for more safety of people...

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, wires and contact surfaces prior to soldering...

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...

Measuring The Charging And The Discharging Current Of The Battery

Introduction When we work with rechargeable battery it is useful to have the following functions:* measuring the charging current * measuring the discharging current * measuring the voltage over the batteryBut in order to...

Multi-channel Hardware Driver for Embedded Systems

Introduction The real world embedded systems are controlling DC motors, step motors, electromagnetic relays, incandescent lamps, powerful LEDs, displays, inductors, transformers, long cables, etc.On the market we can find large variety of...

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 Using Arduino UNO And Blynk

Control your Robot 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 and Blynk!This project uses...

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...