Adding External LED Indicators to APM 2.5

Post date: 28-Aug-2013 08:50:03

"When you turn on the APM, you the LEDs will stay off until it is booted, then will flash the same as the on-board ones. When a GPS lock is achieved, the GPS LED will stay lit. When the bird is armed, the red LED will blink out and once it is fully armed, it will light a solid red. The beeper will beep twice on arming, and once on disarm."

I've done this mod ...Link To PAGE All respect and due's to Scott Berfield

See video at the bottom of post ...I placed my Led's in the Arm's .. Got made up LEDs with resistors on EBAY

Go to the parameters list and find LED_Mode. I changed mine to 115 since I don’t have a Beeper .... If you need explanation go to the above page ...

LED pin outs

Bit Number

7 6 5 4 3 2 1 0

0 0 0 0 0 0 0 1 = 1 Motor LEDs On/Off

0 0 0 0 0 0 1 0 = 2 GPS On/Off

0 0 0 0 0 1 0 0 = 4 AUX Function On/Off

0 0 0 0 1 0 0 0 = 8 Beeper On/Off

0 0 0 1 0 0 0 0 = 16 Low Battery Flash – fast/slow

0 0 1 0 0 0 0 0 = 32 Motor LEDs NAV blink On/Off

0 1 0 0 0 0 0 0 = 64 GPS LEDs Nav Blink On/Off

1 0 0 0 0 0 0 0 = 128 Not used