The Copernicus II is a great GPS module from Trimble, but the SMD module prohibits immediate gratification.

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

This is not your typical temperature sensor. The TMP006 Breakout can measure the temperature of an object without making contact with it.

Resistors are a good thing, in fact, they're actually crucial in a lot of circuit designs.

MOSFETs are awesome. They're like a switch that you flip electronically! This MOSFET Power Controller makes it easy to switch a battery supply on and off using your favorite microcontroller. The board also has sewable pads so you can use it in e-textile projects that need more juice.

This is the serial backpack for graphic LCDs. The Graphic LCD Serial Backpack interfaces to either our 160x128 pixel “Huge” Graphic LCD, or the smaller 128x64 pixel display, and provides a simple serial interface to a full range of controls.

This is a small buzzer for the LilyPad system. Use 2 I/O pins on the LilyPad main board and create different noises based on the different frequency of I/O toggling. Loud enough to hear inside a pocket but not obtrusively loud.

This new version uses an SMD 5x2 header. This is a simple to use USB AVR programmer. It is low cost, easy to use, works great with AVRDude, and is tested extensively on a Windows desktop. Based on Dick Steefland'sUSBtiny and Limor Fried's USBtinyISP.

This is a full 8-pin breakout for the SIM socket allowing direct access to SIM communication.

This is an evaluation board for the SM5100B GSM/GPRS module everything you need to get started with the cellular module is included on this board. With FTDI's FT232RL connected up to UART0 of the SM5100B you can send AT commands from a PC terminal straight to the module

8, 16, 20, and 28-Pin SSOP to DIP break out boards. The footprint was rotated to accommodate different width SSOP devices and can be used with any pin count up to 28 pins.

The Big Easy Driver, designed by Brian Schmalz, is a stepper motor driver board for bi-polar stepper motors up to 2A/phase.

 It may look like a regular ol' Arduino shield, but don't be fooled, the pyXY (pronounced 'pixie') is a full blown shield-compatible development board.