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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...
Window Alarm Annunciator

Make This Arduino Uno-Based Window Alarm Annunciator

Presented here is a window alarm annunciator based on Arduino Uno board. An annunciator is mainly used in process plants, power plants and industries to monitor various plant conditions to alert...
Circuit diagram of digital tachometer

Build Non-Contact Type Digital Tachometer

A tachometer measures the rotation speed of motors and other machinery. There are various types of tachometers. Described here is a digital non-contact type tachometer using a proximity sensor. Circuit and working The...

Monitor Light Level In Underground Mines And Caves

This circuit monitors light in surrounding areas at all times, displays light level on the LCD and sounds an alarm when light level becomes low. Such systems are being developed and...

This IR Remote Can Control Up To Eight Devices

This Device Controller project based on an 8-bit ATmega328P microcontroller (MCU) can control up to eight devices connected to its electromagnetic relays. The article also describes how to program an MCU...

DIY: Arduino Chatting

Networking is the one of the most important mean of communication used to communicate with people who are connected to one. Most of the available network communication modules in the market...

Virtual Telepresence Robot Using Raspberry Pi

This robot with a camera is placed in a remote location to capture the environment in visual form using Raspberry Pi (RPi). The captured visuals are displayed on the user’s virtual...
IoT-Based Motion Detector Using Cayenne

Build An IoT-Based Motion Detector Using Cayenne

Presented here is a motion-sensor-based security system using Cayenne and Arduino Uno. Cayenne is the simplest and easiest platform for the Internet of Things (IoT) systems. It allows you to connect...
GSM Based Messaging Using Arduino Circuit

GSM Based Messaging Using Arduino

Today, GSM networks are widely-used, whether for making calls or sending SMSes. But some places need urgent messages like in colleges, railway stations, events, share market and so on, and this...

Interfacing Multiple LCDs With Arduino

Here we describe interfacing of three 16x2 LCDs with common data lines to an Arduino Uno board. Four data lines of all the three LCDs are connected to digital pins of...

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