Position light as pre-arm indicator

ArduPilot Lua Scripting
1

While browsing through the LUA example scripts, I was fascinated by the script from Mirko Denecke @mirkix (ardupilot/LED_poslight.lua at master · ArduPilot/ardupilot · GitHub) , which controls the RGB LED strips simultaneously as position lights and strobe lights, the latter indicating an armed status.

Waiting for sufficient GPS reception and setting the origin sometimes takes a while. In order not to always have to stare at the telemetry screen while waiting, I have extended the script a bit to be able to display the progress of the GPS reception out of the corner of your eye.
I am placing a LED chain with 6-8 Leds:

  • The first 2 navigation LEDs switched on means less than 4 satellites, 4 green/red LEDs switched on means up to 6 satellites. All LEDS switched on means more then 6 satellites.
  • Once Origin is set, all white Strobelights flashes on time every 1.5 seconds to indicate that vehicle is able to arm with active EKF3.
  • Doubleflash 1/second means vehicle is armed.

Due to the different brightness of the red and green LEDs, the brightness can be adjusted separately for red and green.

Rolf
LED.lua (3.5 KB)

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2

Nice!

There is a rather poorly documented binding that will allow you to get the notify LED color as well:
local r, g, b = LED:get_rgb()

So, if you wanted your strobe lights to mimic the built-in LED (when disarmed, for example), that might prove useful.

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