LEDs

[DohertyBilly]

Originally Posted by nathanwalters

Most people have covered the whole NeoPixel/Arduino design pattern, so I'll skip over that. One thing that hasn't been mentioned that my team (111) did is robot-Arduino communication. We had an I2C link between the robot and the Arduino. Whenever we wanted to update the LEDs on an event, say, the start of a match, raising our arms, or shooting, we'd send a command/payload byte combination to the Arduino which would then update the LEDs. The relevant Java class of our 2013 code is here: https://github.com/wildstang111/2013...ems/WsLED.java

This year we actually changed the way we communicated with the LEDs. We changed the strip we used (from LPD8806 to Adafruit NeoPixel) and the NeoPixel library disabled interrupts over I2C. Long story short, we lost control a few times. Because of this, we used the 4 leftover digital I/O ports on the sidecar to just send a binary number to the arduino, which changed the pattern based on that.