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 Sparkfun products range from things like resistors and LEDs to humidity sensors and LCD screens.  Including: Books, Cables, Cellular, Components, Development Tools, E-Textiles, GPS, Kits, LCDs, Programmers, Prototyping, Sensor, Tools, Robotics, Wireless

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    Arduino Uno - R3 Arduino Uno - R3 DEV-11021This is the new Arduino Uno R3. In addition to all the features of the previous board, the Uno now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on previous generations). This allows for faster transfer rates and more memory. No drivers needed for Linux or Mac (inf file for Windows is needed and included in t... $36.00

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    Resistor Kit - 1/4W (500 total) Resistor Kit - 1/4W (500 total) Resistor Kit - 1/4W (500 total)sku: COM-10969  Resistors are a good thing, in fact, they're actually crucial in a lot of circuit designs. The only problem seems to be that resistors disappear into thin air. The only way to be sure that you're gonna have the resistor you need when you need it is to stock up, and keep them organized. We have just ... $9.00

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    TMP36 - Temperature Sensor TMP36 - Temperature Sensor  TMP36 - Temperature Sensorsku: SEN-10988    This is the same temperature sensor that is included in our SparkFun Inventor's Kit. The TMP36 is a low voltage, precision centigrade temperature sensor. It provides a voltage output that is linearly proportional to the Celsius temperature. It also doesn't require any external calibration to provide t... $1.50
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    Arduino Due Arduino Due  The Due is Arduino's first ARM-based Arduino development board. This board is based on a powerful 32bit CortexM3 ARM microcontroller made programmable through the familiar Arduino IDE. It increases the computing power available to Arduino users keeping the language as compatible as possible so that many programs will be migrated in a matter of ... $54.95

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    Arduino Yún Arduino Yún The Arduino Yún is a microcontroller board based on the ATmega32u4 (datasheet) and the Atheros AR9331. The Atheros processor supports a Linux distribution based on OpenWRT named Linino. The board has built-in Ethernet and WiFisupport, a USB-A port, micro-SD card slot, 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as ... $96.75

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    Conductive Thread Bobbin - 60ft Conductive Thread Bobbin - 60ft  Conductive Thread Bobbin - 60ftsku: DEV-10867 This is 60 feet of conductive thread spun from stainless steel fiber and wound on a plastic bobbin. Use it to sew up all of your e-textile projects. This small bobbin is a great way to get into wearable electronics without the upfront cost of buying an entire spool of thread. 60 feet of thread is en... $2.95

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    Arduino Wi-Fi Shield Arduino Wi-Fi Shield  Arduino Wi-Fi Shield DEV-11287 The Arduino WiFi Shield allows an Arduino board to connect to the internet using the 802.11 wireless specification (WiFi). It is based on the HDG104 Wireless LAN 802.11b/g System in-Package. An Atmega 32UC3 provides a network (IP) stack capable of both TCP and UDP. Use the WiFI library to write sketches which conn... $127.42

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    Arduino Uno- R3 SMD Arduino Uno- R3 SMD  Arduino Uno- R3 SMD DEV-11224   This is the new Arduino Uno R3. In addition to all the features of the previous board, the Uno now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on previous generations). This allows for faster transfer rates and more memory. No drivers needed for Linux or Mac (inf file for Windows is ... $36.00

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    Basic 16x2 Character LCD - RGB Backlight 5V Basic 16x2 Character LCD - RGB Backlight 5V Basic 16x2 Character LCD - RGB Backlight 5V sku: LCD-10862   This is similar to other 16x2 character LCDs that you've seen before but with one vibrant difference: The backlight is actually an RGB LED. This means that you can change the backlight of this display to any color you want by controlling the three backlight levels. I... $14.95

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    Stepper Motor - 68 oz.in (400 steps/rev) Stepper Motor - 68 oz.in (400 steps/rev)  Stepper Motor - 68 oz.in (400 steps/rev) ROB-10846  These steppers are a great way to get things moving, especially when positioning and repeatability is a concern.Features:Step Angle (degrees) : 0.92-PhaseRated Voltage: 3VRated Current: 1.7A/Phase5mm Diameter Drive ShaftHolding Torque: 48N.cmNEMA 17 form factorDocuments:DatasheetProduct Video $35.00

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    Breadboard Power Supply Stick 5V/3.3V Breadboard Power Supply Stick 5V/3.3V Breadboard Power Supply Stick 5V/3.3V sku: PRT-10804   This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All headers are 0.1" pitch for simple insertion into a breadboard. Input power can be supplied to either the DC barrel jack or the two pin header labeled ... $14.95

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    Surface Transducer - Large Surface Transducer - Large  Surface Transducer - Largesku: COM-10975 Surface transducers give you the awesome power to turn almost any surface into a speaker. They're essentially just a speaker except instead of a cone, the coil is attached to a pad that conducts the vibration into whatever you press it against. Hook it up to an audio source and press it against the neare... $22.50

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    BarePaint - Conductive Paint BarePaint - Conductive Paint  BarePaint - Conductive Paintsku: COM-10994 Bare Paint is just like any other water-based paint... except that it's electrically conductive! This means that you can actually paint wires onto things like models, clothes, furniture, walls, almost anything you can think of. Standard acrylic or water-based paints can even be used alongside Bare Pain... $30.00

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    Stepper Motor - 125 oz.in (200 steps/rev) Stepper Motor - 125 oz.in (200 steps/rev)  Stepper Motor - 125 oz.in (200 steps/rev)sku: ROB-10847  These steppers are a great way to get things moving, especially when positioning and repeatability is a concern.Note: This is a uni-polar stepper, meaning that if you are going to drive it with a bipolar stepper driver, you can ignore the yellow and white leads and drive it using the rema... $25.50

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    Pulse Sensor Pulse Sensor  Pulse Sensor SEN-11574 Heart rate data can be really useful whether you're designing an exercise routine, studying your activity or anxiety levels or just want your shirt to blink with your heart beat. The problem is that heart rate can be difficult to measure. Luckily, the Pulse Sensor Amped can solve that problem!The Pulse Sensor Amped is a p... $28.50

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    Surface Transducer - Small Surface Transducer - Small  Surface Transducer - Smallsku: COM-10917 Surface transducers give you the awesome power to turn almost any surface into a speaker. Much like our larger surface transducer, this is essentially just a speaker except instead of a cone, the coil is attached to a pad that conducts the vibration into whatever you press it against. You can hook it up ... $12.00

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    Small Heatsink with Thermal Tape (pack of 5) Small Heatsink with Thermal Tape (pack of 5)  DISCONTINUED - This page is for reference onlySmall Heatsink with Thermal Tape (pack of 5)sku: PRT-10746  These tiny little black anodized heatsinks are perfect for cooling off small surface-mount components such as the Allegro A4983 stepper driver. We ship them in packs of five with a strip of thermal tape pads that can be used to attach them ... $8.80
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    Rotary Encoder - 1024 P/R (Quadrature) Rotary Encoder - 1024 P/R (Quadrature) Rotary Encoder - 1024 P/R (Quadrature)sku: COM-11102  This 1024 pulse per rotation rotary encoder outputsgray code which you can interpret using a microcontroller and find out which direction the shaft is turning and by how much. This allows you to add feedback to motor control systems. Encoders of this kind are often used in balancing robots an... $48.00

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    7-Segment Serial Display - Blue 7-Segment Serial Display - Blue  7-Segment Serial Display - Blue COM-11442  4-digit 7-segment displays are really neat little devices, it's a shame that they can be so cumbersome to control. Well we've solved that problem by making them a little bit "smarter." The 7-Segment Serial Display combines a classic 4-digit 7-segment display and an ATMega328 microcontroller allowing yo... $13.50

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    Standoff - Nylon (3/8", 4-40, 10 packs) Standoff - Nylon (3/8", 4-40, 10 packs) Standoff - Nylon (3/8", 4-40, 10 packs) sku: PRT-10927   These nylon standoffs are 3/8" long and tapped for a 4-40 screw. These are great for mounting your board in an enclosure, or just getting it up off the table. The black nylon will give your project a very sessy look. Sold in packs of 10. Check below for matching screw... $2.95

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    Bluetooth Modem - BlueSMiRF HID Bluetooth Modem - BlueSMiRF HID  Bluetooth Modem - BlueSMiRF HIDsku: WRL-10938  The BlueSMiRF HID is essentially the same board as the BlueSMiRF Silver but the populated RN-42 comes loaded with the HID firmware. HID, or "Human Interface Device," is the communication protocol used for computer peripherals such as keyboards, mice and joysticks. This makes the RN-42-HID a simple ... $44.95

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    BarePaint - Conductive Paint Pens (10ml) BarePaint - Conductive Paint Pens (10ml)  BarePaint - Conductive Pen (10ml) COM-11521 Bare Paint is just like any other water-based paint... except that it's electrically conductive! This means that you can actually paint wires onto things like models, clothes, furniture, walls, almost anything you can think of. Standard acrylic or water-based paints can even be used alongside Bare Pai... $12.75

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    4-Digit 7-Segment Display - White 4-Digit 7-Segment Display - White 4-Digit 7-Segment Display - White sku: COM-10931    This is a basic, 4-digit 7-segment display - white in color. It has a common anode. The display features one decimal point per digit, and individually controllable apostrophe and colon points. The LEDs have a forward voltage of 1.9VDC and a max forward current of ... $1.95

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    LilyPad Coin Cell Battery Holder LilyPad Coin Cell Battery Holder LilyPad Coin Cell Battery Holder sku: DEV-10730    If you're looking for a simple way to add a battery to your LilyPad project, the LilyPad Coin Cell Battery Holder might do the trick. It's a simple board which holds a 20mm coin cell battery (such as a CR2032) and gives you 4 connection points (two positive and two negati... $3.95

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    Illuminated Rotary Encoder Breakout Illuminated Rotary Encoder Breakout Illuminated Rotary Encoder Breakout sku: BOB-10954    This is a breakout board for the illuminated rotary encoder. It breaks out all of the pins to standard, breadboard friendly, 0.1" headers. Simply solder an encoder down to the board and you're ready to add illuminated input to your next project. The breakout even h... $4.84

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    Mega Pro Mini Cable - 8" (8-wire) Mega Pro Mini Cable - 8" (8-wire) Mega Pro Mini Cable - 8" (8-wire) sku: PRT-10853   This is a wire assembly terminated with the same 8-pin JST-SH connector which is on the Mega Pro Mini. Pick up a few of these to break out all of those pesky pins. Integrating these connectors into your projects makes it possible to quickly swap out a Mega Pro Mini between two... $0.95

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    USB Digital Multimeter - Auto-Ranging USB Digital Multimeter - Auto-Ranging  DISCONTINUED - This page is for reference onlyUSB Digital Multimeter - Auto-Ranging (RS232 output)sku: TOL-10892  It seems like everything plugs in to your computer these days, and this digital multimeter is no exception. This auto-ranging multimeter will test AC and DC voltage and current as well as capacitance, resistance, frequency and even ... $59.95
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    Logic16 - USB Logic Analyzer Logic16 - USB Logic Analyzer  Logic16 - USB Logic Analyzersku: TOL-10989  Do you need big logic analysis in a small package? That's exactly what the Logic16 delivers. The Logic16 is a 16-channel USB logic analyzer with so much style it'll make your cell phone jealous. Simply connect it to your computer with the included USB cable, attach your test probes and install the Sal... $375.00
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    Relay SPST-NO Sealed - 20A Relay SPST-NO Sealed - 20A Relay SPST-NO Sealed - 20A sku: COM-10924    These are massive single pole - single throw (SPST) normally open (NO) sealed relays. This means the connection is normally open (not connected) and they make a single connection (single pole) and only open or closed (single throw). Use them to switch high voltage/high current d... $2.95

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    Ribbon Crimp Connector - Breadboad Friendly (2x5, Female) Ribbon Crimp Connector - Breadboad Friendly (2x5, Female) Ribbon Crimp Connector - Breadboad Friendly (2x5, Female)sku: PRT-10965   This 2x5 crimp connector snaps onto a 10-pin ribbon cable to form a dual-inline connection that can be pushed right into a breadboard. Documents: Datasheet $0.95

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