Sparkfun

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US$6.08

This is a simple plastic plate that holds an Arduino (Mega R3 or Uno) and self adhesive breadboard. This version still holds an Arduino and a self-adhesive clear breadboard but we've done away with the plastic clips and now provide screws which give you a more solid and simple connection.

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US$27.93

This is a 5V Arduino running the 16MHz bootloader meant for advanced users that understand the limitations of system voltage. Arduino Pro does not come with connectors populated so that you can solder in any connector or wire with any orientation you need.

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US$16.73

This is a 3.3V Arduino running the 8MHz bootloader meant for users that understand the limitations of system voltage. It's a great board that will get you up and running quickly.

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US$20.93

This is a kit containing all the parts you need to assemble a joystick shield that can sit on top of your Arduino and turn it into a simple controller. Five momentary push buttons (4+ joystick select button) and a two-axis thumb joystick gives your Arduino functionality on the level of old Nintendo controllers. 

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US$25.13

This is a package Joystick Shield Kit that requires assembly all inside a clear clamshell. Five momentary push buttons (4+ joystick select button) and a two-axis thumb joystick gives your Arduino functionality on the level of old Nintendo controllers. 

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US$23.73

This is a 16X2 Character LCD inside a clear clamshell package. This is an add-on to the SparkFun Inventor's Kit (SIK) which gives you the ability to use an LCD as a visual interface for your project.

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US$23.73

This can equip your Arduino with mass-storage capability, so you can use it for data-logging or other related projects. All new microSD shields have a voltage converter chip on-board that converts the Arduino 5V signals to 3.3V signals in accordance with SD specifications.

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US$34.73

This provides a very easy way to start using MOSFETS for your next high current project. This shield allows you to use a computer power supply (or any other power source) to use your Arduino to switch high current. With RFP30N06LE MOSFETS, you can easily control a lot of current directly from your Arduino.

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US$20.93

This is a basic breakout board for the FTDI FT232RL USB to serial to work with official Arduino and cloned 5V Arduino boards.

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US$25.13

This is a FTDI cable converter which allows for a simple way to connect serial (TTL) interface devices to USB. The I/O pins of this FTDI cable are configured to operate at 5V. The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector.

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US$25.13

This is a FTDI cable converter which allows for a simple way to connect serial (TTL) interface devices to USB. but also configured to operate at 5V with 3.3V I/O. The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector.

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US$111.93
This  is a package GPS Shield Kit with EM406 GPS receiver and headers included inside a a clear clamshell. Adding GPS to your Arduino has never been easier. Multiple GPS receivers attach easily to the shield, and with the example sketch, you will be able to locate your exact position within a few meters.
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US$20.93

A great way to build simple capacitive touch interfaces, and now it's even easier to incorporate into your Arduino projects with the touch shield. The touch shield has 9 capacitive touch pads, with headers for the remaining 3 electrode connections. With this shield you can have a total of 12 touch sensitive buttons.

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US$6.93
This is a small PCB that adapts the standard Microchip 6-Pin RJ11 connector to the Olimex 6-Pin .1" Molex Connector.
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US$9.05
This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip can be used to connect 16 analog sources (like sensors) to 5 pins on a microcontroller.
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US$15.33
This is a tiny breakout board and the microphone's input can fit flush against the enclosure of your project. The amplifier on the breakout has a gain of 67 and more than meets the bandwidth requirements of the mic.
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US$4.92
This is a PCB designed for the L298N Full-Bridge dual motor driver IC (multiwatt package). All pins of the L298N are broken out to a 15-pin 0.1" pitch header. Two mounting holes are also provided. Dimensions: 1.6x0.85 inches.
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US$6.93
This is a simple breakout board that uses a vertical SMD connector for the EM401 or EM406 GPS module cables.
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US$2.45
This is a PCB for the LED tactile button and easy to use on your next project. Populate the board according to the polarity of the LED on the switch. The markings for the switch are irrelevant and can be reversed.
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US$8.10
This is a simple Op Amp breakout board, set up as a 2-stage amplifier with a gain of 100 (gain of 10 for each stage). The on-board trim pot sets the signal level between the stages, not the feedback path. The bandwidth is set to 15.9kHz by a pair of feedback capacitors, or over 100kHz with the caps removed.
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US$13.93
Breakout board for the microSD socket that is not much bigger than your fingernail. Compatible with the SPI interface found on any SD card, this tiny form factor was created for cell phone storage and is perfect for your next MP3 project!
Delivery within 2-3 weeks
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US$2.73
This is a small PCB that brings out the pins of the RJ45 connector to an in-line 0.1" footprint. Use with break-away headers for breadboarding or create your own RJ45 cable connection.
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US$3.43

This is a PCB for the Thumb Joystick. Pins are broken out to a 0.1" header and includes 4 mounting holes in the corners. Dimensions: 1" X 1.25"

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US$9.05
This is a board designed for opto-isolation and electrically isolates a controller from the high-power system by use of an opto-isolator IC. This board is helpful for connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system.
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US$6.52
This is a breakout for the SOIC version of the 74HC595 shift register IC. Clock in data and latch it to free up IO pins on your micro. All pins from the IC are broken out to standard 0.1" spaced headers.
Delivery within 2-3 weeks
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US$5.53

This is a breakout board made for 20 pins SOIC style. This custom PCB will interface a standard SOIC package IC to 0.1" headers, which are easier to work with and integrate well with breadboards. There is DIP-standard 0.6" spacing between the two rows of pins.

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US$5.53

This is a breakout board made for 28 pins SOIC style. These are custom PCB boards that interface standard SOIC devices to standard .1" headers. Standard .6" spacing between pins. Will fit directly into a standard width (600 mil) DIP socket. For wide ICs (memories, drivers, 74s, etc).

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US$1.33
This is a breakout board made for SOT23 style. 6 pin SOT-23 to DIP adaptor. Created to take SOT23 of various pin sizes breakout to DIP. This will work with 3-pin MOSFETs, BJTs, Voltage Regulators (SOT-23-5), and various other Micro6, Micro5, etc packages. DIP width is 0.300" (300mil) and will fit nicely into any breadboard or DIP socket.
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US$4.13
8, 16, 20, and 28-Pin SSOP to DIP break out boards. The footprint was rotated to accommodate different width SSOP devices and can be used with any pin count up to 28 pins. Designed to be used with 0.65mm pitch devices but can also be used with 0.025" pitch devices (comes out to ~0.635mm). We've made these 0.635mm devices fit just fine.
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US$5.53
8, 16, 20, and 28-Pin SSOP to DIP break out boards. The footprint was rotated to accommodate different width SSOP devices and can be used with any pin count up to 28 pins. Designed to be used with 0.65mm pitch devices but can also be used with 0.025" pitch devices (comes out to ~0.635mm). We've made these 0.635mm devices fit just fine.
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US$4.13
This board breaks out all 20 pins of the XBee to a 0.1" standard spacing dual row header. The spacing between 0.1" headers is 0.5" making it breadboard DIP friendly.
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US$4.13
8-Pin SSOP to DIP break out board. The footprint was rotated to accommodate different width SSOP devices and can be used with 8 pin SSOPs. Designed to be used with 0.65mm pitch devices but can also be used with 0.025" pitch devices (comes out to ~0.635mm). We've made these 0.635mm devices fit just fine.
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US$24.26
This is a 16 channel PWM unit with 12 bit duty cycle control (0-4095), 6 bit current limit control (0-63), and a daisy chainable serial interface. This breakout board is a good way to take full advantage of this useful IC. All 16 PWM channels are broken out to standard 0.1" headers, which run alongside convenient voltage and ground rails.
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US$162.33

This is the comprehensive guide to ZigBee wireless networks. This kit includes many of the parts and pieces you will need to work through the examples in the book. If you're serious about learning everything you need to know about XBee networks, this kit and the book will get you up to speed in no time (or as long as it takes you to get through the book).

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US$20.93

This is an LED-based “candle” that cycles through all the colors of the rainbow. The LectroCandle is a simple, through-hole kit, comprised mainly of 3 RGB LEDs and an ATtiny85 to control them.

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US$41.93
This is a board that allows you to control up to two DC motors using a serial command interface. The serial interface is easy to use and it lets the user select an individual motor, the direction, and the desired speed constant (up to 10 different speed from stop to full speed).
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US$4.50
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
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US$99.95
This is a fingerprint scanner capable of gathering and storing unique finger prints. The Nitgen RS232 serial fingerprint scanner is a powerful ADSP-BF531 Blackfin based system. Simply hold your finger on the optical scanner, query the device over serial, and you will be issued a unique ID. Use that ID within your embedded system to determine access levels, time clocks, door locks, etc.
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US$1.33

This is a PCB made for the MQ-3, MQ-4, MQ-6 and MQ-7 gas sensors.

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US$20.93
This is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air.
Delivery within 2-3 weeks
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US$29.99
A simple flex sensor 4.5" in length. Patented technology by Spectra Symbol - they claim these sensors were used in the original Nintendo Power Glove. The resistance of the flex sensor changes when the metal pads are on the outside of the bend (text on inside of bend).
Delivery within 2-3 weeks
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US$35.78
The harder you press, the lower the sensor's resistance. Pressing hard, the resistance changes from infinite to ~300k. The sensor itself is thin and flexible, but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor.
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US$36.74
The harder you press, the lower the sensor's resistance. Pressing hard, the resistance changes from infinite to ~300k. The sensor itself is thin and flexible, but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor.
Delivery within 2-3 weeks
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US$35.29
This is a very long force sensitive resistor - over 2 feet - has a sensing area of 0.25x24". This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance.
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US$10.51
This is a small force sensitive resistor of 1 3/4" length and has a 0.16" (4 mm) diameter active sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance.
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US$18.80
This is a force sensitive resistor with a square sensing area of 1.75x1.5". This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ.
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US$9.73
The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force anywhere in the range of 100g-10kg.
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US$37.73
This is a contactless linear potentiometer used for liquid level and other harsh applications. This innovative sensor allows designers to retroactively assemble the sensor on the outside of pneumatic and hydraulic cylinders, which connects with the internal magnet of the cylinder.
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US$8.97
This is a basic piezo sensor that is often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to +/-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch.
Delivery within 2-3 weeks
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US$10.22
This is a basic piezo sensor with a mass attach to the tip often used for flex, touch, vibration and shock measurements. A small AC and large voltage (up to +/-90V) is created when the film moves back and forth. A simple resistor should get the voltage down to ADC levels. Can also be used for impact sensing or a flexible switch.
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US$9.74
This is a vertical attachment of a  low-cost cantilever-type vibration sensor loaded by a mass to offer high sensitivity at low frequencies.
Delivery within 2-3 weeks
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US$13.69
This is a membrane of resistance built inside a flex strip of 50mm. These are very thin variable potentiometers. By pressing down on various parts of the strip, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the strip.
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US$67.50

This Liquid Level Sensor from Milone Technologies is a great way to measure the level of a liquid. It has a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems.

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US$2.54
This is a basic tilt switch that can easily be used to detect orientation. Inside the can are a pair of balls that make contact with the pins when the case is upright. Tilt the case over and the balls don't touch, thus not making a connection.
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US$1.33
This is a high quality, 30mil standard card with a low coercivity magnetic stripe. The stripe can contain up to 3 tracks of information. This card can be erased and written multiple times with a compatible writer.
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US$5.53
By eliminating the resistor and changing the orientation of the surface mount LED we've shrunk the board down which looks great in elegant designs or on sheer fabrics where you don't need the extra weight or exposed board space. It's really the closest you can come to sewing a point of light directly to your project.
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US$3.36
This is a simple slide switch for the LilyPad. Use it as a simple ON/OFF switch, or to control LEDs, buzzers, sensors, etc.
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US$7.52
This sensor will output 0.5V at 0 degrees C, 0.75V at 25 C, and 10mV per degree C. Doing an analog to digital conversion on the signal line will allow you to establish the local ambient temperature.
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US$4.90
Use the Tri-Color LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create any color. Very bright output.
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US$12.05

Apply 5V and be shaken by this small, but powerful vibration motor. Works great as an physical indicator without notifying anyone but the wearer.

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US$2.73
Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing.
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US$2.10
This is a 3-pin JST connector with red, black, and yellow wire colors cut to a length of 5 inch out. This cable comes fully assembled as shown and connects directly to many different Sharp sensors. Quick and easy, this cable will save you 15-20 minutes over making your own wiring harness.
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US$2.79
A simple breakout PCB for the GP1A57HR photo interrupter. This PCB has three connections for PWR, GND, and Signal. When the gate is clear, SIG will be high (>4.9V). When the gate is blocked by a finger, writing utensil, food pellet, or anything else - SIG will go low (<0.4V).
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US$4.92

This is QRE1113 breakout board features a digital output, using a capacitor discharge circuit to measure the amount of reflection. This tiny board is perfect for line sensing when only digital I/O is available, and can be used in both 3.3V and 5V systems.

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US$4.92
This is a TSL235R light-to-frequency converter outputs a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance). The device has been temperature compensated for the ultraviolet-to-visible light range of 320 nm to 700 nm and responds over the light range of 320 nm to 1050 nm.
Delivery within 2-3 weeks
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US$7.14
This is a breakout board for the TEMT6000 Ambient Light Sensor. Only what you need, nothing you don't. Sensor acts like a transistor - the greater the incoming light, the higher the analog voltage on the signal pin.
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US$2.09
This is an integrated Hall effect latched sensor. Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor.
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US$2.51
This is a coin cell holder for the common CR2032 type battery. The holder has a neat pop-in, pop-out feature that makes changing the battery easy. The feet of the holder have a small hole that allow it to be sewn without modification.
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US$26.13
This is a 36" high temperature Type-K Thermocouple with glass braid insulation. Features: Type-K Thermocouple (Ni-Cr). 30 gauge stripped and prepped wires. Thermocouple range : -270 to +1372C (-454 to +2501F). Glass braid insulation range : -73 to +482C(-100 to +900F). Yellow + / Red -. 
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US$15.33
This is a relative humidity sensor module comprised of a capacitive type humidity sensor, a CMOS capacitor to frequency converter and an EEPROM used to hold the calibration factors. Due to the characteristics of capacitor type humidity sensor, the system can respond to humidity change very quickly.
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US$11.13
This is a 2.4GHz Duck Antenna 2.2dBi with Reverse Polarized - SMA RF connector. Perfect for prototyping with our RF ICs. 50 ohm impedance. 4" long.
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US$13.93
This is a 2.4GHz Large Duck Antenna 5dBi with Reverse Polarized - SMA RF connector. Perfect for prototyping with our RF ICs. 50 ohm impedance.
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US$11.96
This is a 900 - 1800 MHz Duck Antenna 2dBi with regular Reverse Polarized -SMA RF connector. Perfect for use with the XBee 900MHz units. 50 ohm impedance. 105mm long.
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US$6.93
Cable interfaces UFL RF connectors to RP-SMA antennas. Use it to attach any standard RP-SMA 2.4GHz antenna to the DPAC 802.11 modules. Dimensions: 4" Length.
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US$6.93
This is a 4" connector cable that interfaces U.FL RF connectors to regular SMA connections.
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US$2.73
PCB edge mount - SMA RF connector. Perfect for prototyping with the GPS and Cellular devices that require an antenna connection. These connectors have a female signal pin and will correctly mate with the original SMA type antennas.
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US$2.59
Great for tight PCB layouts that require antenna connections.
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US$9.26
This is a wireless receiver to work with our 315 MHz transmitter. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link.
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US$7.33
This is a wireless transmitter to work with our 434MHz receiver. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link.
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US$9.26
This is a wireless receiver to work with our 434MHz transmitter. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link.
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US$29.33
This is the newest 2.4GHz transceiver from Nordic Semiconductor, using the nRF24L01+ module. Dimensions: 0.8x0.9". This transceiver IC operates in the 2.4GHz band and has many new features! Take all the coolness of the nRF2401A and add some extra pipelines, buffers, and an auto-retransmit feature - very nice!
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US$22.33
The MPR121 IC is a great way to build simple capacitive touch interfaces, and now it's even easier to incorporate into your Arduino projects with the touch shield. The touch shield has 9 capacitive touch pads, with headers for the remaining 3 electrode connections.
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US$2.73
This set of sewing needles is a must-have when stitching together your next e-textile project. Each envelope contains three 48mm, 1.23mm thick needles and two smaller 39mm, 0.67mm thick needles.
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US$2.73
This is a surface mount 5-way tactile switch allows for a joystick-like interface in a very small package. Sometimes you want a small input and a single button just won't cut it. These are surface mount, but easily soldered.
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US$6.93
Each LED and button is brought out to the side connectors. The connectors are soldered to the back side of the PCB. We recommend trimming the connector leads on the button side as short as possible to reduce the deflection of the pad.
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US$4.13
Each button has a hole underneath that accepts either a 3mm or 5mm standard LED. The idea is that you can create a button interface of your choice with the ability to display simple colors under each button. Mainly, we wanted to use our tri-color LEDs to create a full RGB color for each button.
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US$5.53
Black 1/8" ABS plastic. We use four 4/40-0.5" size screws matched with plastic standoffs to attach the 2x2 button pad and Simon project boards. Using two of these bezels with two of the bottom bezels will create a 4x4 bezel appropriate for the full button pad.
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US$13.93
This is a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors are soldered to the back side of the PCB. We recommend trimming the connector leads on the button side as short as possible to reduce the deflection of the pad.
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US$13.93
Each button has a hole underneath that accepts either a 3mm or 5mm standard LED. The idea is that you can create a button interface of your choice with the ability to display simple colors under each button. Mainly, we wanted to use our tri-color LEDs to create a full RGB color for each button.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$4.25
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect for mashing. This button has a great tactile, 'clicky' feel.
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US$1.39
This is a miniature surface mount momentary button. These are great, low-profile momentary switches. Perfect as a tactile reset switch. Rated up to 50mA.
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US$0.91
Miniature Single Pull Single Throw switches. These are high quality Omron type B3F momentary on switches. This switch has a very large 10mm tall button. Perfect as an embedded switch behind an enclosure wall. Rated up to 50mA.
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US$3.00
This is a hot red safety cover which protects a toggle switch from accidentally being turned on.
Delivery within 2-3 weeks
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US$1.39
This is a surface mount momentary switch. Perfect for reset or general inputs.
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US$4.13
This is a rotary switch with 16 selectable positions. With only 6 pins (2 of which are common), you can select 16 positions. The switch is breadboard compatible and has a nice solid feel to it.
Delivery within 2-3 weeks
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US$2.12
This is a surface mount 3-way switch. These switches are commonly found on handheld devices like MP3 players. This switch allows the user to navigate using up and down selections then select by pressing the plastic piece inwards. Capable of swtiching up to 1.2VA (360mA at 3.3V and 240mA at 5V).
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US$1.39

A simple SMD slide switch. Perfect for when you need access to a setting or a power switch from the edge of a PCB buried deep within a project. Features: 4V - 300mA. 70mOhm resistance. 10,000 cycle life.

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US$4.90
This is a resistive analog joystick, very similar to those found on the PSP1000. These compact joysticks are different in that they have a very interesting 'slide' feeling.
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US$7.70
Each cable has a female RJ45 on one side which is adapted to a male RJ45 and 5.5x2.1mm barrel jack connector on the other side. The 'injector' cable has a female barrel jack connector and the 'splitter' cable has a male barrel jack.
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US$8.99
This is a set of five IC hook up with pigtail connection on the other end. These are good quality IC test hooks with a male connection wire. Instead of a single hook, these have two hooks that are capable of grabbing very small points (like SOIC IC legs).
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US$15.43
This is a cable that will allow you to access the pins on your car's OBDII connector. It has an OBDII connector on one end and a DB9 female serial connector on the other.  The overall length of the cable is 5'.
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US$3.99
This is a 6 foot USB panel mount connector cable to a 4-pin female header connection. You might have seen these cables used in computers. They are typically used to bring USB connections from a motherboard to the external case, or the rear expansion slots. They have a 0.1" spaced 4-pin header on one end and a USB A connector on the other.
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US$20.93
This EL panel is a flexible plastic sheet which contains a phosphor layer and lights up with a neon-like glow when the proper voltage is applied.
Delivery within 2-3 weeks
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US$13.93
This EL tape is a flexible plastic ribbon which contains a phosphor layer and lights up with a neon-like glow when the proper voltage is applied. It's a lot like the ever-popular EL wire except, well, it's a ribbon.
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US$13.93
This EL tape is a flexible plastic ribbon which contains a phosphor layer and lights up with a neon-like glow when the proper voltage is applied. It's a lot like the ever-popular EL wire except, well, it's a ribbon.
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US$14.95
This EL tape is a flexible plastic ribbon which contains a phosphor layer and lights up with a neon-like glow when the proper voltage is applied.
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US$13.93
This is a 10 foot EL wire in length with a 2.3mm in diameter that glows fluorescent green and is terminated with a JST PH connector.
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US$13.93
This is a 10 foot EL wire in length with a 2.3mm in diameter that glows purple and is terminated with a JST PH connector.
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US$53.13
This 200 pulse per rotation single-output encoder outputs electrical pulses which you can interpret using a microcontroller to find the position of the input shaft. This allows you to add feedback to motor control systems. Encoders of this kind are often used in balancing robots and dead reckoning navigation.
Delivery within 2-3 weeks
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US$2.73

This is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces.

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US$1.39
This plastic knob accepts a 6mm shaft and has a 15mm outer diameter. They simple press-fit onto a shaft. These are clear so that they can be used with our illuminated potentiometer.
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US$3.95
This small key switch is ideal for projects that require a secure power ON/OFF function. With only 14.5mm diameter front bezel it does not take up much space on your panel. On/Off positions are clearly marked with a green dot for ON and red dot for OFF. Locking action is very positive with a push and rotate requirement to move positions. The switch is perfect for small professional looking projects.
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US$16.73
With a large red button, easy mounting, and a long detachable ignition cable, this would be a perfect fit for your next spud cannon, rocket launcher, or flamethrower. The igniter itself is about 3.5" long, with a 0.65" diameter barrel (for mounting). The cable is just over 2 feet in length.
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US$6.85

This is a 12-step rotary encoder with a nice 'clicking' feel. It's breadboard friendly, and has a pretty handy select switch (by pushing in on the knob). The encoder is different from a potentiometer in that an encoder has full rotation without limits. 

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US$1.39
They're great when you need a lot of color from not a lot of board space. Features: Viewing angle: 120 degrees. Red: (640nm) @ 250mcd. Green: (525nm) @ 880mcd. Blue: (470nm) @ 180mcd.
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US$6.93
These LEDs provide optimized light quality and efficiency to address a number of project needs, including LED illumination.
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US$6.93
These LEDs can be blindingly bright and have a max forward current of 1A! This LED has a typical forward voltage of 3VDC (2.55V to 3.99V range).
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US$25.13
These lights are extremely bright, with supply currents between 350mA and 700mA. The board can therefore dissipate close to 6.5W. A heatsink is recommended.
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US$27.93
These lights are extremely bright, with supply currents between 350mA and 700mA. The board can therefore dissipate close to 6.5W. A heatsink is recommended.
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US$3.15
These units have four pads with a common anode configuration. Use this one LED for three status indicators or pulse width modulate all three and get mixed colors!
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US$11.13
This is a 14 pin LGA package low power triple axis accelerometer. The sensor has a g-Select input which allows for the selection between two measuring ranges - ±1.5g or ±6g.
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US$2.10
This is a SOT-223 package 0.8A Adjustable voltage regulator capable of outputting 1.2V to 18V. The LM1117 uses the same pin-out and setup as the popular LM317 adjustable regulator, contained in a handy surface mount package. Requires two external resistors to function.
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US$4.92
This is a 8 pin dip programmed flash microcontroller chip. PICAXE is a neat entry-level microcontroller system that is relatively cheap to get started with. The chip is programmed with a simple serial connection and the BASIC development environment is free! 
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