This shield is improved version of the original DOG102S shield with added functionality:

• Keypad state for all buttons returned via SPI interface, no digital pins used
• Different CS and A0 pins can be selected if default D9/D10 are not available or used by another shield
• Extended pin headers to keep shield above tall Ethernet Shield and USB connectors

The schematic is available as PDF:

DOGS102_SPI_Keypad.pdf

This shield uses on-board ATTINY261 microcontroller.

Fully supported with release 1.07 of higher
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