This 32 GPIO board provides a 32 channel digital expansion designed for use on the Raspberry Pi. The board is based around the MCP23s17 16-bit I/O expander from Microchip Technology Inc.

Features:

• A pair of MCP23s17 expanders are included on the board allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi. The 32 GPIO Board is powered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allow you to stack the 32 GPIO along with other expansion boards.
• 32 LEDs that show the status of the GPIO

Technical specifications:

• 23s17 U13, U14 with GPIO Port A and B
• Output of each GPIO to 2x10 pin:
• Bank B (1-10) GPIO (0, 1, 2, 3, 4, 5, 6, 7, GND, INTB)
• Bank A (1-10) GPIO (0, 1, 2, 3, 4, 5, 6, 7, GND, INTA)
• JP23 GA0 ~ GA7 (U13 Port A)     JP24 AA0 ~ AA7 (U13 Port B)
• JP25 BA0 ~ BA7 (U14 Port A)     JP26 GB0 ~ GB7 (U14 Port B)
• R61, R62, R63 (for U13 address select A0, A1, A2)
• R64, R65, R66 (for U14 address select A0, A1, A2)
• U13 (21) 23017 -1 Port A, B     U14 (22) 23017-2 Port A, B
• 23s17 Datasheet

Demo software:

• 23s17-cs0.py     23s17-cs1.py     23s17-2.py 
  
• n23s17-cs0.py     23s17-2port-v3.py
• 23s17-2port-s-v103.py

User Manual

Package content:

• 1x Rs-Pi SPI 23s17-2 32 GPIO board
• 1x User Manual