The SpeakJet is a completely self-contained, single-chip voice and complex sound synthesizer. It uses a mathematical sound …

Standard frequency crystals - use these crystals to provide a clock input to your microprocessor. Rated at 20pF capacitance…

Everyone likes a (carefully controlled) fire! We've met some very ambitious pyros on our mission of enabling makers to…

 This 0.012" Muscle Wire® (aka shape memory Nitinol) is a one foot long piece of nickel-titanium al…

Surface transducers give you the awesome power to turn almost any surface into a speaker. Much like our larger surface tra…

This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple screw in design. Perfect…

 This is the 16 LED NeoPixel Ring from Adafruit, a small chainable 1.75" (44.5mm) outer diameter board equip…

The ever popular FTDI USB to UART IC now comes with built-in EEPROM and built-in oscillator! This IC comes in a 28-pin SSO…

The MAX7219CNG is a compact, serial input/output common-cathode display driver that can interface microprocessors to 7-segm…

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

This a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors…

A small audio speaker that is ideal for radio and amplifier projects and is small enough to fit in robot projects. Fea…

 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…

This is a simple SPDT slide switch - great for use as an ON/OFF button, or just as a general control switch. The pins are …

OpenSegment makes it easy to add a large 7-segment display to your project. Because larger 7-segment displays pull more po…

You can never have too many LEDs. Don't worry, we've got you covered. This is a pack of 100 LEDs. Buy in bulk - sav…

This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials ins…

Do you like LED matrices? We do! Now we are giving you the power to make your own with minimal soldering any beginner can …

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…

 This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output volta…

Have you ever needed a cheap way to activate something from across the room? Infrared remotes are still the cheapest way t…

This is a simple 5mm LED with an interesting array of applications. This UV LED can be used for counterfeit detection (bil…

If you want to get some sound out of your project but have a tight space budget, this is a good way to do it. This 0.25W, …

You can never have too many LEDs. Don't worry, we've got you covered. This is a pack of 100 LEDs. Buy in bulk - sav…

These circular LED displays are a lot of fun. Essentially, these are what you would get if you could 'wrap' one of…

This is a heavy-duty joystick very similar to the ones in claw arcade games. Directional movements are momentary limit swi…

These 10 segment bar graph LEDs have many uses. With a compact footprint, simple hookup, they are easy for prototyping or …

This through-hole speaker is great for projects where you need something that sounds better than a piezo buzzer but don…

 This is the NeoPixel Stick from Adafruit, a small chainable board with eight 5050 WS2812 RGB LEDs. The WS2812s are ea…

4-digit 7-segment displays are really neat little devices, it's a shame that they can be so cumbersome to control. Wel…

LEDs - those blinky things. A must have for power indication, pin status, opto-electronic sensors, and fun blinky displays.…

If you used BlinkM and you thought it was good, but needed something to temporarily blind your enemy, the MaxM is what you…

This is a common 555 timer/oscillator from TI. A classic for all of those first year circuits projects where you need to b…

These are small rare earth magnets - 0.25" cubed. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curious…

We all know that you can never get too many LEDs. Don't worry, we've got you covered. This is a pack of 25  LE…

This is a resistive analog joystick, very similar to those found on the PSP1000. These compact joysticks are different in …

This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials ins…

The ATMega32U4 is Atmel's low-power 8-bit AVR RISC-based microcontroller featuring 32KB self-programming flash program…

This is a very common 0.1uF capacitor. Used on all sorts of applications to decouple ICs from power supplies. 0.1" sp…

 This 0.012" Flexinol® Actuator Wires (aka shape memory Nitinol) is a one foot long piece of n…

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

LEDs - those blinky things. A must have for power indication, pin status, opto-electronic sensors, and fun blinky displays…

This 200 pulse per rotation single-output encoder outputs electrical pulses which you can interpret using a microcontrolle…

Potentiometers are incredibly useful, whether you're controlling the volume on your stereo or the 'mood lighting&#…

These color-changing LEDs take the work out of creating crazy, flashy, blinky... ness. Simply apply power and the LED will…

4-digit 7-segment displays are really neat little devices, it's a shame that they can be so cumbersome to control. Wel…

These are massive single pole - double throw (SPDT) sealed relays. This means that when current is applied to the coil it t…

The WS2812 is an RGB LED with a WS2811 control IC built right into the LED. This really blew our minds to see the control …

Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins: one for each color…

8 Darlington Arrays in 18-Pin DIP Package part # ULN2803A. Perfect for running relays and high-power devices up to 500mA a…