This is a Linker kit base shield for Raspberry Pi with ADC interface. All the Linker kit modules can be plugged onto Raspberry Pi through this base shield. Moreover, this shield has an on-board ADC chip so that analog output modules can be used on Raspberry Pi. The ADC chip used is MCP3004.  It talks to Raspberry Pi using SPI interface. 

There are 8 4-pin 2.54mm spacing housing on the base shield:

• JP1: A0, A1, VCC, GND.
• JP2: A2, A3, VCC, GND.
• JP3: SCL, SDA, VCC, GND.
• JP4: RXD, TXD, VCC, GND.
• JP5: P17, P18, VCC, GND.
• JP6: P27, P22, VCC, GND.
• JP7: P23, P24, VCC, GND.
• JP8: P24, P4, VCC, GND.

These connectors cover Analog, I2C, and GPIO. 

Download:

• Schematics
• Product Page