DRS Firmware Manual v2.6-EN (2022-07-19)
©2022 Drone Rescue Systems GmbH
17/19
7
Operation
Device States and Signals
An indication light (LED) and a buzzer are used to inform the pilot about the DRS's internal
system states as described in Table 10. States with two color entries let the LED blink
alternately in the two specified colors, e.g. the LED continuously changes between blue and
purple while booting, and when the parachute has been
, the LED cycles through all
shown colors rapidly.
State / Blink Colors Acoustic signal
Description
User action
INITIALIZATION
blue
purple
-
booting
wait until done (a few seconds)
blue
off
-
waiting for man.dep.
apply PWM signal for manual
deployment
blue
cyan
-
waiting for interface
check connection to the
interface
blue
white
-
waiting for GNSS
check GNSS reception
blue
yellow
three short beeps
warning
do not take off; check logfile
blue
red
continuous on/off error
do not take off; check logfile
MANUAL
green
off
two long beeps
(only at landing)
ready for takeoff
take off when you are ready
green
yellow
three short beeps
warning
do not take off; check logfile
green
red
continuous on/off error
do not take off; check logfile
AUTOMATIC
green
one long beep
normal flight
-
yellow
three short beeps
warning
land; check logfile before next
flight
red
continuous on/off error
land ASAP; check logfile before
next flight
DEPLOYED
continuous
high/low
parachute deployed
-
UPDATE
purple
off
-
updating FW
wait until done (a few seconds)