Command & Control

Command and control is provided through a standard AX.25 data link (TNC) or a DTMF (touch tone) sent using the keypad available on most radios. 


 DTMF Commands

The following commands are entered using the DTMF (touch tone) keypad on the radio.  Each command must be completed within 10 (ten) seconds and is terminated with the '#' character.  If a mistake is made during entry, de-key and key your radio and enter the command again.
 
DTMF Code Operation
50# Disable auto pan
51# Auto pan up/horizon every 2 minutes
54# Auto pan horizon/down every 2 minutes
55# Auto pan up/horizon/down every 2 minutes
57# Auto pan up/down every 2 minutes
53# Pan up and hold
56# Pan horizon and hold
59# Pan down and hold
52# Turn ATV on
58# Turn ATV off
737# Reset processor
411# APRS current status packet
412# APRS position report ($GPGGA)
413# APRS position report ($GPRMC)
414# APRS landing estimate ($GPGGA)
471# Cross band repeater mode
472# ANSR-EOSS cross link mode
473# Low power (1 watt) cross link
474# High power (5 watt) cross link
475# Disable CTCSS carrier detect
476# Enable CTCSS carrier detect
4770# Enable/disable debug serial port
477X# X: 1-6 listen time in 5X seconds
xxxx# Cut down
xxxx# Reset flight time/logs


TNC Commands

 From the ground station, a user enters the command string.  The following are the commands support by the payload and camera computers.  The commands are sent using the UI or un-proto mode of a standard TNC.

Header  Mnemonic  Operand(s)  Description
fc cam 0,1,2,3,4 Select automatic camera control mode.  The camera position is automatically moved every two minutes:
0 - Disable automatic control.
1 - Alternate pan up, horizon, and down.
2 - Alternate pan up and horizon.
3 - Alternate pan horizon and down.
4 - Alternate pan up and down.
fc cut xx Activate the balloon cut down mechanism; where xx is the access code to prevent accidental activation.
fc down xx Point the camera down.
Move the camera up xx°.
fc horizon   Point the camera at the horizon.
fc lock 0/1 Enable/disable the camera servo lock.  If the servo is locked, the pulse train remains active even if the camera is not moving.
fc out xx 0/1 Turn output number xx on or off.
fc repeater  0/1 Turn the cross band repeater on or off.
fc reset    Reset the flight computer.
fc speed xx Set the camera pan speed to xx°/second
fc stop   Stop the camera movement
fc time reset
hh:mm		 Reset the total flight time.
Set the flight time to hours and minutes specified as hh:mm.
fc tlm 0,1,2,3,8,9
 		Select telemetry mode:
0 - Provide standard position and status telemetry string.
1 - Show the raw camera controller status string.
2 - Display complete GPS status string.
8 - Enable NMEA data sentences on RS-232 port.
9 - Disable NMEA data sentences on RS-232 port.
fc up xx (optional) Point the camera up.
Move the camera up xx°.
fc ver   Display the software version.



The following are sample commands entered on the ground terminal.

Command Operation
fc up Point the camera all the way up. 
fc out 2 1 Turn on output number 2.
fc time 1:15 Set the flight time to 1 hour and 15 minutes.
fc down 15 Move the camera down 15°.