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

These tactile buttons are great for all sorts of projects. This assortment comes with 2 of each of 6 different colors for …

This is a breakout board for our Blackberry Trackball. The four spindles on the trackball have a tiny circular magnet the e…

Atmel's ATMega328P 8-Bit Processor in 28 pin DIP package. It's like the ATmega168, with double the flash space. 32…

 This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This f…

MP3 decoding is now even easier! This is the popular VS1011 single-chip MP3 audio decoder from VLSI is an easy to solder S…

EL inverters allow you to drive EL wires. This particular EL inverter accepts 3V input and outputs 110VAC to drive EL wire…

These DC powered heating pads are perfect for near-body heating applications. They get warm to the touch but not too hot. …

Surface transducers give you the awesome power to turn almost any surface into a speaker. They're essentially just a s…

This is a translucent silicon rubber button pad with 16 buttons originally inspired by the folks at monome.org. Each button…

EL wire, or electroluminescent wire, is a flexible wire coated in phosphor. Apply the appropriate voltage and it lights up…

 This is a perfect choice if you are in need of a heavy duty push button! These metal push buttons are a very tough, s…

An adjustable potentiometer can open up many interesting user interfaces. Turn the pot and the resistance changes. Connect…

PICAXE-08M2 microcontroller chip. PICAXE is a neat entry-level microcontroller system that is relatively cheap to get…

 This is an 8 gig microSD memory card. It's perfect for massive datalogging without taking up a lot of space. Thes…

Are you trying to make a quick dime from electronics? Why limit yourself to dimes? This coin acceptor will take up to 6 di…

A very powerful 5mW green laser. Fun, but don't point in anyone's eyes. These units include a momentary power butt…

The PicoBuck LED Driver is an economical and easy to use driver that will allow you to control and blend three different L…

This is the basic laser card module with circuitry built in so that it can be turned on/off with a TTL signal. Includes po…

Are you trying to make a quick dime from electronics? Why limit yourself to dimes? This coin acceptor will take three diff…

A solid state relay (SSR) is just what it sounds like; an IC that acts like a mechanical relay. They allow you to control …

The TLC5940 is a 16 channel PWM unit with 12 bit duty cycle control (0 - 4095), 6 bit current limit control (0 - 63), and …

This piezo igniter can be used for all sorts of applications where you need a spark to make fun things happen. With a larg…

This is a large sized RGB LED Matrix with a backpack that has been designed to take SPI serial input and display any graph…

Let there be light(s)! This festive string of addressable RGB LEDs can add color to indoor or outdoor displays. Much like …

Even though the Tron movies have been out for a while, electroluminescence is still the coolest thing since sliced bread. T…

This MOSFET power control kit is basically a breakout for a RFP30N06LE MOSFET. We give you terminal blocks for connecting …

BlinkM is a “Smart LED”, a networkable and programmable full-color RGB LED for hobbyists, industrial designers…

 This is the 24 LED NeoPixel Ring from Adafruit, a small chainable 2.6" (66mm) outer diameter board equipped…

This is the low profile Raspberry Pi microSD card adapter from Adafruit. We know what you're thinking, "Why can&#…

A simple slide potentiometer can go a long way. Rated at 10kOhm and 0.5W. Comes with solder tab connections. The taper pro…

This 200 pulse per rotation rotary encoder outputs gray code which you can interpret using a microcontroller and find out …

These DC powered heating pads are perfect for near-body heating applications. They get warm to the touch but not too hot. …

What is a 'laser card' you ask? It is only the coolest thing to hit Spark Fun Electronics since the Color LCD last …

Who doesn't love the soft glow of electroluminescence? This EL panel is a flexible plastic sheet which contains a phos…

These are very bright LEDs. The LEDs are so bright that it hurts to look directly at them. Please take a look at the pictur…

No really - it's 6 inches (153mm) tall! This very large 7-segment display can be seen from a hundred feet away. So man…

This is a compact and easy to use relative humidity sensor from Sensirion. The SHT15 digital humidity and temperature sens…

 Gone are the days that you have to worry about silicone weather proofing splitting and breaking on you! These are sea…

EL wire, or electroluminescent wire, is a flexible wire coated in phosphor. Apply the appropriate voltage and it lights up…

MP3 decoding is now even easier! This is the popular VS1011 single-chip MP3 audio decoder from VLSI is a LQFP package! It …

This simple on-off switch is rated for 20A at 12V but who cares about all that, it looks way awesome. These toggle switches…

This is a 12-step rotary encoder with a nice 'clicking' feel. It's breadboard friendly, and has a pretty handy …

Yes you read that correctly - 10Farad capacitor. This small cap can be charged up and then slowly dissapated running an ent…

It's not what project you have in mind that may use a rocket launch switch... The question is what project will you co…

These are very common, high quality BJT NPN transistors made by ST Micro. Datasheet: 2N3904

LinkM is a USB adapter that addresses two of the most frequently-requested BlinkM features. It enables you to program Blin…

We all know that you can never get too many LEDs. Don't worry, we've got you covered. This is a mixed pack of 26 LE…

 This is the NeoPixel Shield from Adafruit. This Arduino shield is equipped with 40 WS2812 RGB LEDs arranged in an 5x8…

This DC Blower really moves some air! Pulling about 1Amp @ 12VDC, this blower is rated at 16CFM (although it seems like mor…