This is the SparkFun Vernier Interface Shield, a simple add-on to give your Arduino the capability to interface with Vernier sensors. Attached to this interface shield are four British Telecom sockets (2 Analog, 2 Digital) which all Vernier sensors use as connectors. Like any other shield, simply attach it to an Arduino development platform. This shield was developed to be used with the Arduino Uno platform but will still work with other Uno equivalents like the Leonardo or SparkFun RedBoard.

Vernier Software and Technology has been a leader in data collection and analysis for educators world-wide. They were amongst the first companies to design and promote the use of computers, sensors, and data collection in K-12 classroom laboratory experiments.

To maximize the flexibility of using all of the Vernier sensors, we have made the following pin assignments on our shield. Many of the Vernier sensors use I2C for identification and calibration data. We use a multiplexer to "share" (multiplex) pins A4 and A5 between all four connectors. The multiplexer is controlled with Pins 10 (LSB) and Pin 11 (MSB). See the section on multiplexing for more information.

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Arduino SparkFun Vernier Interface 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