Robot Signal Light Patterns

[Nate Laverdure]

Originally Posted by Cal578

Hasn't it been officially documented somewhere?

It was documented in less detail (only lists four states) in 2009 on the NI "FIRST community" forum:

There are four states of this status LED, listed here in order of priority. If multiple occur, the highest one listed is what is displayed.

1. Fast Blink (200ms on / 200ms off) - System error: No driver's station communication, bad cRIO Image, bad team ID, extensive communication errors.
2. Steady on - Everything ok
3. Fast-Slow Blink (200ms on / 900ms off) - Low battery (<12 Volts) and system disabled either by system watchdog, user watchdog, or Driver's Station set to disabled
4. Slow Blink (900ms on / 900ms off) - System disabled

EDIT: A comment from that page explains that the 5th state (long-on, short-off) was added in 2010:

New for 2010, there is an additional blink pattern. Instead of solid on for both Auto Enabled and Teleop Enabled, Teleop Enable now shows a short-off pattern. 1500ms on, 100ms off. This makes it more obvious which mode the robot is in.