Arduino Power Shield

FT-RELAY8

Drive up to 8 relays from your Arduino using just 2 I/O pins with this shield. It communicates with your board using I2C, so you can even stack several shields together to drive 16, 24, or more outputs! Includes back-EMF protection and works with a wide range of relays. Perfec...

AF-2078

What's a project if it's trapped on your desk? Now you can take your Arduino anywhere you wish with the PowerBoost shield! This stackable shield goes onto your Arduino and provides a slim rechargeable power pack, with a built in battery charger as well as DC/DC booster.

$16.49
MB-10031

This module is a shield of Arduino UNO. It can turn Arduino pins into Makeblock RJ25 ports. You can connect Arduino UNO with Makeblock electronic modules. This shield provides a stable power, so it can drive many servos and motors.

SF-DEV-14598

The SparkFun AST-CAN485 I/O Shield allows you to use the AST-CAN485 Dev Board with 24VDC Inputs and Outputs, a popular voltage level for industrial automation devices as well as 5v devices. By providing screw terminals, the board can easily and safely interface with I/O in a s...