Development Boards

US$2.49
This phototransistor responds to visible light as well as the lower infrared range.
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US$1.75
This regulator is used in conjunction with our 5 V regulator to create the dual voltage supply circuits on the Propeller Education Kit platforms.
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US$2.10
This allows you to add 8 input pins to your microcontroller using an SPI type (3-pin) interface.
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US$5.17
 These stickers are a must for anyone making a breadboarded Arduino-compatible. They fit right on top of a DIP ATmega328 (or '168) chip, and clearly indicate every pin as it would be called in the Arduino IDE.
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US$6.93
Sew a couple inches into the pad of your gloves to keep your hands toasty while you use your iPhone, iPad or any other device with a 'capacitive' touch screen. Because capacitive sensors sense your finger through conductivity, not pressure, they don't work when you wear your gloves - they act as insulators.
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US$13.92
This is a prototype pre-drilled printed circuit board and has copper holes designed for any projects.
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US$21.49
Here's a handy Arduino shield: we've had a lot of people looking for a dedicated and well-designed data logging shield. We worked hard to engineer an inexpensive but well-rounded design. Not only is it easy to assemble and customize, it also comes with great documentation and libraries.
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US$19.95
This nifty adapter cable has a classic HDMI plug connector at one end and at the other end a DB-15 VGA connector (it has hex nuts that you can remove if you are trying to mate it with a cable that also has hex nuts). There's also an audio jack on the side, this provides stereo headphone out.
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US$26.17
This new Adafruit shield makes it easy to use a 16x2 Character LCD. The 16x2 Character LCD is NOT, repeat, NOT, included.
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US$34.92
This pi plate is perfect for when you want to build a stand-alone project with its own user interface. The 4 directional buttons plus select button allows basic control without having to attach a bulky computer.
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US$64.33

This is the full VoiceShield kit. It is easy to build with only though hole parts. A great project for any one that wants to make their Arduino project "Really talk". It has all the parts needed to build a VoiceShield. You just add your own Arduino and either a basic 8 ohm speaker or powered speakers.

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US$41.93

This expands the capabilities of your Arduino to a whole new world. Imagine connecting 64 buttons to an Arduino! The 64 Button Shield is ideally suited to make custom electronic musical instruments, sound effect boards or simply give your Arduino a ton of inputs.

Delivery within 2-3 weeks
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US$8.95 US$6.99
Convienient small break out board for the Raspberry PI. XBee style connector for XRF / XBee / RN-XV / XBT / RF-BEE etc. Has the SPI and I2C pins on one standard 8 way header and the Raspberry PI's 8 general purpose I/O pins on another for easy access.
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US$8.95 US$6.99
This is a handy board that offers a compact and concise shield that fits perfectly on top of the Raspberry Pi. The Humble PI allows for a place to add a voltage regulator, some capacitors and a DC socket. 
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US$9.73
The FET Strip is a simple breakout for the IRLI3705n MOSFET, capable of sinking 55v and up to 52Amps, this little strip is great for controlling high power devices. and the handy screw terminals make wiring easy.
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