Computing stuff tied to the physical world


Output and Expander plug fixes

In Software on Feb 25, 2010 at 00:01

While testing an Output Plug, I found a little mess-up: the documentation pinout is wrong, all even and odd I/O pins on the 2×6 output connector were swapped. Here is the correct pinout:

op1-pinout.png

I’ve updated the documentation.

The “expander” sketch is also very confusing, it was still for the PCA8574A, whereas the current Expander Plug uses an MCP23008.

Here’s an improved sketch, with a little running-light demo:

Screen shot 2010-02-22 at 12.38.18.png

This code has been checked in to replace the “expander.pde” sketch in the Ports examples.