This is my second Teensy project. Teensy is an Atmel-based microcontroller board.
This code will cycle patterns across pins D0-D7 on the Teensy and accept input from a connected computer about what patterns to display. I put LEDs on those pins, but they could be other kinds of components too.
KITT takes input from the connected console over USB. There are currently 4 commands, one for each mode:
- k - "Knight-Rider" (lights swish back and forth)
- s - step (one light at a time)
- f - follow (step with a group of 3 lights)
- d - demo (lights progress from the ends toward the center and back)
You send commands from your computer's console. For example, here's how to activate "follow" mode:
echo 'f' > /dev/cu.usbmodem12341
You can also enter commands interactively from the shell like so:
cat > /dev/cu.usbmodem12341
Then you can enter a command character (see above) followed by [enter] and the display will change.
To exit, press Ctrl-D.
I built this for Teensy++ 1.0. You'll need to change the Makefile to accommodate the model of Teensy that you use.
This code is based on the example code that comes with the Teensy.
The USB code was lifted from Ward Cunningham's Txtzyme project: http://www.google.com/search?q=txtzyme