Sparkfun

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CA$9.88
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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CA$16.96
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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CA$4.38
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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CA$2.33
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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CA$1.53

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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CA$5.38
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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CA$7.62
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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CA$4.54
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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CA$6.08
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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CA$15.31
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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CA$15.31
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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CA$4.67
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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CA$4.67
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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CA$4.67
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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CA$4.67
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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CA$4.67
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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CA$4.67
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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CA$1.53
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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CA$1.00
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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CA$3.30
This is a hot red safety cover which protects a toggle switch from accidentally being turned on.
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CA$1.53
This is a surface mount momentary switch. Perfect for reset or general inputs.
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CA$4.54
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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CA$3.00
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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CA$3.00
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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CA$24.54
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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CA$32.23
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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CA$3.00
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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CA$2.85
Great for tight PCB layouts that require antenna connections.
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CA$10.18
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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CA$8.05
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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CA$10.18
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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CA$12.23
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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CA$15.31
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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CA$13.14
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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CA$7.62
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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CA$7.62
This is a 4" connector cable that interfaces U.FL RF connectors to regular SMA connections.
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CA$2.76
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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CA$28.71
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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CA$16.85
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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CA$7.85
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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CA$2.30
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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CA$3.00
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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CA$2.31
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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CA$3.07
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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CA$5.41

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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CA$3.69
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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CA$8.26
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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CA$5.38
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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CA$13.24

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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CA$1.46
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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CA$6.08
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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CA$20.66
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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CA$10.69
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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CA$41.46
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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CA$9.86
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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CA$11.23
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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CA$10.70
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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CA$15.04
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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CA$74.18

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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CA$2.79
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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CA$4.95
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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CA$109.84
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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CA$1.46

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

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CA$23.00
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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