Hi. I've just found an old MCP23S17 board (http://www.mikroe.com/en/tools/glcd/serial/128x64/) and I would like to know if it's possible to interface that with the Arduino? I would like to write to my 16x2 8bit LCD which is connected to that board... Even better, if it's possible, I would like to use my GLCD connected to that board, and then connected to the Arduino??
Best Regards Thomas Jespersen