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

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…

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

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…

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

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

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

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

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

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

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

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

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

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

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

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, …

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…

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

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

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

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

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

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

It's the end of the world, and you need a button to press. This is it. A 100mm diameter (outside diameter) dome illumi…

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

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

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

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

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

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…

 These are bare non-addressable 5 meter long RGB LED strips that come packed with 60 5060 LEDs per meter, that's 3…

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…

Rotary encoders are used similarly to potentiometers. They're different from potentiometers in that an encoder has ful…

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

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

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 …

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

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

Low-profile electrolytic decoupling capacitors 10uF/25V. These capacitors are great transient/surge suppressors and work we…

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

This is a very simple, clear infrared LED. These devices operate between 940-950nm and work well for generic IR systems in…

 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…

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

 This 0.005" Muscle Wire® (aka shape memory Nitinol) is a one foot long piece of nickel-titanium al…

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