2018-04-10 (Tu) ModuKey

Hardware arrived so programming could begin. In the past, serial devices were avoided because they seemed more trouble than they were worth but IO expanders were integral to this design and the cost-effectiveness of the project. The MCP23017 and MCP23008 were selected since they have been key to a lot of Arduino projects so the libraries should be reliable and accessible.

A breakout board for the sixteen-point IO expander was purchased and connected. An example program was loaded to test the usability of the hardware. At first, the feedback seemed promising but the IO expander would fail after a few minutes and become unresponsive.

Teensy and MCP23017 breakout board

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.

Completed projects from year 2.

Completed projects from year 3.

Completed projects from year 4.

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