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AVR Chronograph from concept to PCB

A chronograph is a device used to measure the speed of a passing object.  In it's simplest form, this involves two sensors of some kind that 'see' the object, some device that can measure time, and some output to deliver the data to the user. In this instructable, I'll be showing how I designed, programmed, and built a device like this with a couple extra handy features to make it more versatile than the on ...

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Relais Driver Board

This is a peripheral board with 4 relais, rated at 5A/250V each. The board has a ML10 output connector for connection with the AT2313 Project board. It has also 4 LED's for indication which relais is switched on. Hardware The circuit is simple, it consists of no more then an ML10 connector, a ULN2803A, which contains eight open collector darlington transistors, four of them amplifies the signals that come f ...

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Setup Arduino Software for Atmega328P with Internal Crystal on Breadboard

A breadboard Arduino will require an Atmega328P controller for these instructions. Note the “P” at the end of the name. You cannot use an Atmega328 because it has a slightly different device id number. It will require a different board configuration. Instructions for that are outside of this tutorial. Go to the Arduino tutorial website to get the board file to add to your sketchbook folder, Breadboard Tutor ...

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Atmega16/32 Development Board With LCD

This instructable shows, how to do your own development board for Atmega16 or Atmega32 processors.The Internet is full of home made development boards, but I think that, there is room left for another one. This board have been very useful on my projects and I actually designed and made it to serve one of my project. What it offers? - ISP-connector. - Adjustable reference voltage for AREF with trimmer. - 8 l ...

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Standalone Arduino / ATMega chip on breadboard

Step 1: Parts needed I bought my parts from Digikey and Sparkfun Electronics - they're 2 of my favorite places to buy components. Anyway, here's the list: #1 - (Qty: 1) - ATMega328 chip with Arduino bootloader pre-installed ($5.50) #2 - (Qty: 1) - 5VDC Switching power supply ($5.95) (Note: If you don't use a switching power supply, you must add in a voltage regulator and a couple of capacitors...see below) ...

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Digital Reversi board using Atmega644

Introduction For our final project in ECE 4760, we designed and implemented a Reversi board consisting of hardware, a microcontroller, and a touch screen. Sixty-four bicolor (red and green) LEDs were implemented as the black and white pieces of the game. Players could simply light up a LED (place a piece) by touching the touch screen in the position right above the corresponding LED. Other LEDs would be fli ...

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Auto-composing keyboard Using Atmega644

Project Overview We designed an electric piano that automatically composes a piece of music for the ECE 4760 final project. All the user need to do is to select a mood of the music and play two notes upon which the music is based, and then he can just lie down and enjoy the music created for him. He can also choose to train the piano by first playing several pieces of music he is fond of. The piano would th ...

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