July 2012 Blog Posts (34)

Tutorial: How to use the IR remote control with Arduino

On this tutorial, we will show how to use the IR control kit from SparkFun. This kit comes with 2 IR emmiters, 2 IR receivers and a remote control. In this sample, we will turn on a LED when the user push the button. Each button will trigger a different LED.

Here we will implement the code directly, but you can also use the …

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Added by GarageLab on July 31, 2012 at 7:30pm — No Comments

Raspberry Pi network checker

Folks at Bitlair hackerspace made a fun way to check if the network is up or down. They got a traffic light and a raspberry pi that were lying around, making easy to figure out when to refresh an unloaded page.…

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Added by GarageLab on July 30, 2012 at 6:30pm — No Comments

Tutorial: Tilt sensor with Arduino

On this tutorial, we will show how to use the tilt sensor with Arduino. The tilt sensor is a device that detects its orientation or inclination. It is small, low consumption and easy to use. Inside the sensor, there are two small balls that close the contacts when tilted. The following picture shows the device from inside:…

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Added by GarageLab on July 29, 2012 at 7:30pm — No Comments

Have you heard about Club Jameco?

Jameco, an electronics supply I order from quite often, has created a new site called Club Jameco. The idea is that electronics hobbyists can create designs and Club Jameco will market and sell them. As the designer, you get a commission based on sales volume.

I thought some folks on this site might be interested. Most of us don't have the time and…

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Added by Andrew Terranova on July 29, 2012 at 5:10am — No Comments

LED canvas

Ch00f created this cool LED canvas, where you can draw with laser. The device works reading LED as a light sensor between screen refreshes. So, the microcontroller can detect the laser and the turn the corresponding LED on.

Added by GarageLab on July 28, 2012 at 9:30pm — No Comments

Tutorial: Rotary encoder with Arduino

The rotary encoder is a angular measurement device. With it, you can measure rotational movements and count turns. Some of it has a switch connected together with the axis. On this tutorial, we will show how to use this sensor with the Arduino. This encoder has 7 pins: 2 for fixing, 2 for the switch and 3 for rotation measurement. We will use just the last 3. For more…

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Added by GarageLab on July 27, 2012 at 7:30pm — 1 Comment

send 8bits using RF 434 Mhz module(with ht12d-ht12e)

These things are neat, cheaper and easy to work with but these modules have a problem.
Normally if you work with them using MCUs, they hardly work because a lot of background noise interferes with the signals.
And when you interface the module with ht12e-ht12d encoder-decoder pair, you can only send 4 bits at a time(that too cannot handle small delays between consecutive transmissions).…
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Added by Rushil Gupta on July 26, 2012 at 10:20am — No Comments

Snake bot

This snake bot climbs poles of different sizes and can even climb on you! This new algorithm can adapt to different shapes and do a great job.

More info at: …

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Added by GarageLab on July 25, 2012 at 8:30pm — No Comments

Article: Tips on how to electrically protect your Arduino - Part 5 of 5

On this article (part 4 of 5) we will continue the previous article on how to protect your Arduino. Here we present two more…

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Added by GarageLab on July 24, 2012 at 6:30pm — No Comments

Massimo Introduces Arduino Leonardo

Arduino Leonardo is out there. On this video, Massimo Banzi clarifies the differences since the Arduino Uno, for example, the single chip that acts as USB interface and main…

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Added by GarageLab on July 23, 2012 at 7:30am — No Comments

Article: Tips on how to electrically protect your Arduino - Part 4 of 5

On this article (part 4 of 5) we will continue the previous article on how to protect your Arduino. Here we present two more…

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Added by GarageLab on July 22, 2012 at 7:30pm — No Comments

SAMI: a robot with motion detection

PrimeSense, a company that developed kinect, developd SAMI, a robot that has motion detection. The robot can mimic human movements and interact with the environment almost naturally. For example, the eyes and face can track a person close to it.

Added by GarageLab on July 21, 2012 at 7:00pm — No Comments

Article: Tips on how to electrically protect your Arduino - Part 3 of 5

On this article (part 3 of 5) we will continue the previous article on how to protect your Arduino. Here we present two more…

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Added by GarageLab on July 20, 2012 at 6:30pm — No Comments

Flip Dot Display

Guys from Breakfast created this cool display for a TNT promotion. The display has several dots controlled individually to generate images. They are fast enough to reproduce the viewers…

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Added by GarageLab on July 19, 2012 at 7:00pm — 1 Comment

Article: Tips on how to electrically protect your Arduino - Part 2 of 5

On this article (part 2 of 5) we will continue the previous article on how to protect your Arduino. Here we present two more tips.

Applying more than…

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Added by GarageLab on July 18, 2012 at 6:30pm — No Comments

Ping-pong ball tracking

Researchers at Ishikawa Oku Laboratory at The University of Tokyo developed this ping-pong ball tracking system. It relies on high speed directing mirrors that can focus in the ball. With it, we can observe the ball rotation and have awesome videos!

Added by GarageLab on July 17, 2012 at 6:30pm — No Comments

Article: Tips on how to electrically protect your Arduino - Part 1 of 5

On this article (part 1 of 5) we will show what you should not do with your Arduino. These are practical ways to damage your board.

Short circuit: digital pin to ground

If you configure a digital pin as output, setting it as HIGH and then…

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Added by GarageLab on July 16, 2012 at 7:00pm — No Comments

Levitating light bulb

From Core77:

Eighteen-year-old Chris Rieger, an engineering student at Australia's University of Queensland, has developed a wireless LED light that floats. The damn thing levitates, it's not physically connected to anything.

Check out the…

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Added by GarageLab on July 15, 2012 at 6:30pm — No Comments

Tutorial: What is and how to use PWM (Pulse Width Modulation) withArduino

On this tutorial, we will show what is and how to use the PWM (Pulse Width Modulation) with Arduino.

The PWM is a modulation that changes the pulse width according to the desired analog signal. It generates a square wave that can later be converted on an analog output. The Arduino board has 6 PWM pins. They have a "~" sign close to the port number.

The PWM control generates…

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Added by GarageLab on July 14, 2012 at 6:30pm — No Comments

A magnetic + conductive ink LED display

William McShane from PumpStationOne created a clever LED display with conductive ink on top a magnetic ink board. With this, he could place LEDs anywhere, making a display.

Added by GarageLab on July 13, 2012 at 6:30pm — No Comments

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