A multi-purpose shield designed for classroom use and for quick prototyping of a wide variety of projects. Provides a significant prototyping area for custom projects, and a number of optional sub-systems that can be included or excluded as required:
20×4 LCD.
XBee module.
Button inputs.
Analog inputs.
Temperature sensor (DS18B20 on 1-wire bus)
Light sensor.
2 x relay outputs.

A0: Light sensor A1: Potentiometer input A2: Buttons (resistor ladder) D0: ZigBee RX (only if ZigBee fitted) D1: ZigBee TX (only if ZigBee fitted) D2: LCD (via shift register) D3: LCD (via shift register) D4: LCD (via shift register) D5: DS18B20 temperature sensor (1-wire bus) D6: Relay output D7: Relay output D0 and D1 are used for communication via ZigBee if it is fitted. The ZigBee module must be removed to upload new sketches.

         Tags: analog , button , input , lcd , output , prototyping , relay , xbee 

Arduino Luke Weston Pebble Shield Pinouts

				AREF
				GND
				D13 / SCK
				D12 / MISO
RESET				D11/MOSI~
3.3V				D10 / SS ~
5V				D9 ~
GND				D8
GND
VIN				D7
				D6 ~
A0				D5 ~
A1				D4
A2				D3 ~
A3				D2
A4				D1 / TX
A5				D0 / RX