Interfacing(USB – RS232 – I2c -ISP) Project Ideas

Arduino Morse Code Shield

Morse code was the breakthrough that made possible long-distance communication in the era of the telegraph. The code represents alphanumeric characters by short and long intervals of signal — those familiar dots and dashes. For many years passing a Morse code test was a prerequisite of getting a Ham license, but nowadays most radio amateurs …

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Micro LASER Show with a CD Lens Mechanism using Arduino

Hello! This is the cheapest and easiest way to make a two-dimensional laser show projector. It uses just one pivoting mirror, powered by the focusing mechanism from a CD or other optical drive. They said it couldn’t be done, but Ljudmila‘s skunkworks GRL research facility delivers anyway! 😉 This design was first discovered in 2006 …

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Using Copper Tape To Create A Digital Selection Pad using Arduino

This is partially me sharing this technique, and partially me learning how to use Instructables. If there are issues with my documentation of the technique or my use of Instructables, please let me know in the comments – thanks! I needed a long row of switches in a pinch, and didn’t have nearly enough switches …

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Accessing 5 buttons through 1 Arduino pin

I made the original Instructible that this is based on over a year ago (You can see it here to see some of the theory around how this works:http://www.instructables.com/id/How-to-access-5-buttons-through-1-Arduino-input ). To make a long story short, I moved to a different country a few weeks after that and have not played with any electronics since. …

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Arduino Projects on a breadboard (no serial com)

Intro: If you’ve got an Arduino Uno and want to start duplicating projects without having to buy an Uno every time… get ready to live!  This instructable will show you how to move your projects (that do not require serial communication) onto a breadboard for prototyping or expansion.  If you’re looking for a more permanent …

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Temperature-controlled USB fan using Arduino

As summer is coming, I bought a USB fan from HuaQiangBei, Shenzhen. However, when I focus myself on work(or game), I could hardly notice its existence. If I can teach it how to think and execute its duty without my order, that will be more practical and fun! So roll your sleeves and follow me …

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Input Pullup Serial using Arduino

This example demonstrates the use of INPUT_PULLUP with pinMode(). It monitors the state of a switch by establishingserial communication between your Arduino and your computer over USB. Additionally, when the input is HIGH, the onboard LED attached to pin 13 will turn on; when LOW, the LED will turn off. Circuit image developed using Fritzing. For more …

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