Robot arm from a desk lamp (IKEA Tertial hack)

This project answers to a need I had: a third hand that holds a camera while I perform a test and takes photos/videos (useful when you're stuck at the lab late at night, and suddenly need a photographer). The downside to a robotic arm was obvious - It needs to be programmed, and it is the last thing you want to do when you need to make a video. So I made it motion capturing device as well... Motion capturin ...

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Arduino Guitar Pedal using arduino

The Arduino Guitar Pedal is a digital multi-effect pedal based upon the Lo-Fi Arduino Guitar Pedal originally posted by Kyle McDonald. I made a few modifications to his original design. The most noticeable changes are the built-in preamp, and the active mixer stage which lets you combine the clean signal with the effects signal. I also added a sturdier case, foot switch, and rotary switch to have 6 discreet ...

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GE RFID tech turns stickers into explosives detectors

A global economy brings many benefits, but it also makes international terrorism extremely difficult to combat. With more goods passing through the world's shipping terminals and airports than ever before, hunting explosives with large, static detectors or teams of inspectors armed with detecting devices and reagents is a bottleneck that increases the chances of evasion. To help US counterterrorism efforts, ...

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Breadboard Arduino

Received a couple of nice big bread boards for Christmas and decided that one of them needed an arduino to use with it. After some thought I decided that the best option was to build the required parts of an Arduino circuit direct on the breadboard. Also the cheapest at only £4 for the required parts. The required sections of the circuit for general Arduino development are: ATMega micro-controller, in this ...

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Building Wireless Sensor Networks: with ZigBee, XBee, Arduino, and Processing by Robert Faludi E-Book

Get ready to create distributed sensor systems and intelligent interactive devices using the ZigBee wireless networking protocol and Series 2 XBee radios. By the time you're halfway through this fast-paced, hands-on guide, you'll have built a series of useful projects, including a complete ZigBee wireless network that delivers remotely sensed data. Radio networking is creating revolutions in volcano monitor ...

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Arduino and quadricopters at Maker Faire

On his blog, Stephen Wolfram, worldwide known as the creator of Mathematica (a widespread computational software) and Wolfram Alpha (a knowledge engine), describes his experience at last NY Maker Faire, where he was supposed to give a public talk. One of his sons, Christopher (13 years old) suggested him a very cool way to improve his talk, by making it much more dynamic with some practical demos. Indeed, a ...

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Tabletop Soccer Game using arduino

Send a Foosball down a ramp and try to score on the goalie! But scoring is not so easy - the goalie moves left and right to block your shot! This project was made for a class called "Thinks that Think" at CU Boulder for the Spring 2012 semester Step 1: Ramp Materials: Aluminum tubing, Basswood, Wooden Dowel, Wood Glue Tools: Hand Drill, Drill Bit 1. Cut a rectangle from a piece of ⅜” Basswood for the stag ...

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Digitally programmable resistor serves as test load

Home> Test-and-measurement Design Center > Design Idea Digitally programmable resistor serves as test load Francesc Casanellas -March 03, 2005 1 Comments inShare   Save Follow PRINT PDF EMAIL Figure 1 illustrates a digitally programmable precision resistance that can serve as a microprocessor-driven power-supply load in custom-designed ATE (automatic-test equipment). An 8-bit current-output DAC, IC1, ...

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The MAX7219 and MAX7221 Led drivers

These two integrated circuits from Maxim are for driving either 64 individual Led's, or up to 8 digits of 7-segment displays. The drivers implement a SPI compatible slave interface that can be controlled from the Arduino using only 3 of the digital output pins. An extensive datasheet for the IC's is available from the Maxim homepage. Since both chips are very similar, I will use the term MAX72XX for both th ...

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Arduino Time & Temp Display Shield

Another project I'm working on required a good timer, but the more I read about Arduino, I realized that I couldn't make an accurate timer using an Arduino that was already devoted to other tasks. The Arduino will always lose time if you perform other tasks. The solution was a Real Time Clock module that keeps perfect time and has a battery backup so it won't reset if the Arduino loses power. I like to make ...

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Measuring Battery Capacity With an Arduino

I needed a couple of AA batteries and found the display at the supermarket where they were all arrayed. Normally when I’m shopping in the supermarket, I tend to look at the price/kg or price/l when comparing similar products. In the case of the batteries, there was no such indicator. Fine, I thought, I’ll work it out myself. I grabbed a few different makes and scanned the packaging for some measure of their ...

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Sunflower Automaton using arduino

This was a 6 week project created for the Spring 2012 Things That Think course at the University of Colorado at Boulder. Our project is an autonomous Sunflower. As in nature, the highest priority for our flower is sunlight, necessary for photosynthesis. Our Arduino controlled sunflower is constructed using 3D printing and laser cutting technologies. Primarily, our flower finds and follows the brightest sour ...

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