The QRE1113 is a small IR reflectance sensor. This sensor is often used in line following robots because, if  it can s…

These acrylic mounts are used to attach a miniature microswitches to a slotted surface like an Actobotics channel, making …

Get your PIC or other uC talking to your computer fast and easy with this board! This is a small custom PCB developed to co…

The Arduino Mega 2560 R3 is a very big and powerful microcontroller,needless to say, you want to keep it protected. Why no…

Now for all of your coin cell battery surface mount needs, the 20mm SMD Coin Cell Holder. This holder fits our 20mm Li…

This is a simple USB serial interface to mate with the Nike+iPod product. Use this breakout board to send and receive seri…

Light pipe is very cool stuff. It transmits light along its length, like fiber optic cable, but it also "leaks" …

  This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter plastic ball, two spacers (1/16&…

This is the same product as the RFM22 Shield. The difference is this version comes in fancy clamshell packaging meant for …

The original Cylons are from TV's Battlestar Galactica. They are humanoid robots with a scanning red visor where their…

 It's the end of the world, and you need a button to press. This is it. A yellow economy grade 100mm diameter (out…

PCB mount clip to hold a AA battery. Sold in single units, you'll need two. These work great for small, low power appli…

It's like an Xacto knife, only better. We use these extensively when working with PCBs. These small knives work well fo…

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…

We've created a brand new edition of the full-color SIK manual! Updated graphics, code revisions and in-depth instruct…

These linkages use 6-32 screw rod (not included) to create custom arms for just about any application. They have a 1/4&quo…

 These plastic chains come in 1ft lengths preassembled with 48 individual and snapable bits, they have a tensile stren…

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 handy AVR programming cable that incorporates both the 10-pin and 6-pin ISP programming interfaces. Cable i…

There are more and more hobbyists taking advantage of surface mount technology these days. With affordable tools like hot …

Single turn 10K Ohm Trimmer Potentiometers. Trimpots are perfect for testing ADC setups, setting LCD contrast, and a multit…

This is a basic, 4-digit 7-segment display - yellow in color. It has a common anode. The display features one decimal poin…

The ADXL335 is a small, thin, low power, complete 3-axis MEMS accelerometer with signal conditioned voltage outputs. The pr…

 These are clear, self-adhesive silicone bumpers 8mm in diameter and about 2mm tall. These bumpers raise your PCB…

Here's a replacement heating element for our hot-air rework stations. It's compatible with Sunkko stations and our …

When you need to track movement in a volatile environment, HotPot provides a thin and sealed form-factor with operating te…

This 1/2” Bore Tube Clamp Hub offers a great way to attach gears, sprockets, wheels or other items to hollow 1/2&rdq…

 It's your basic blue action button! This is a very useful, small, panel-mount momentary switch. It is a SPST N.O.…

These are your standard 1.5V AA alkaline batteries from Duracell. Don't even think about trying to recharge these. Rou…

This is a small ambient light sensor that acts as an NPN transistor. The more the sensor is exposed to light, the stronger…

This is a simple kit that allows the use of very large, very bright, 10mm red/green/blue LEDs. We cannot begin to describe…

Your project can demand attention with these super loud car horns. Yes, they're actual car horns and they're every…

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

The EasyUSB gives your microcontroller access to 2MB that can be seen as a mass storage device in most operating systems. …

 This compact bracket enables convenient mounting of popular, Sanyo-style miniature metal gearmotors. The plastic brac…

This non-flanged "608" sized ball bearing fits nicely into a 22mm diameter hole and has a 8mm bore. This makes i…

 Do you need that extra push over the cliff? The Large sized GTE (Goes To Eleven) Knob can fit onto potentiometer…

When we started shipping in our signature red boxes, we knew it'd be a unique touch but we didn't have any idea it…

 Here is a six pin vertical 1.0mm pitch connector. It is useful if you need something very tiny as a connection. These…

These hub-mountable aluminum gears are ideal for transmitting motion from a motor or servo to a wheel or shaft. These gears…

These are white 2" x 2" electroluminescent (EL) panels from ELastoLite®. These EL panels are highly flexible…

The B Style Motor mount connects to the outside of Actobotics channels and works with both standard and precisions gear mo…

The Photopopper Photovore utilizes very small, high-efficiency motors in combination with elegant circuitry to make a very …

This 12V car adapter jack allows you to plug your project into your car's cigarette lighter for power on the go. It in…

These are black, self-adhesive silicone bumpers 8mm in diameter and about 2mm tall. These bumpers raise your PCB or p…

Quad block bearing mounts attach to the inside of a channel and have a ball bearing with a 1/2” bore for shafts. Thes…

Open Softwear is a book about fashion and technology. More precisely it is a book about Arduino boards, conductive fabric, …

FreeM is a wireless BlinkMs controller and power supply for completely standalone deployment, programming and control of B…

These standard gearmotors are incredibly tough and feature full metal gears to help you drive wheels, gears, or almost any…

 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…