Gluonpilot

Hi all,

I've accidentally switch off the RC transmitter and noticed the throttle went to 5% and the information on the control station remained with RC green at 100%. Is this the normal behaviour? (0.7.2 firmware with 0.7.2 and 0.8beta3 GCS)

Hi,

I suppose this is the failsafe of your RC receiver kicking in?

Throttle is indeed weird. Could you check in gluonconfig how the throttle channel is behaving (values in milliseconds) ? Was your transmitter turned in at power-up?

Yes, the transmitter fail safe was active, but it was fixed at 20%, not at 5%.
Throttle channel values from gluonconfig are: min 1108, max 1931.
At power-up the transmitter was turned on. If it is not turned on, the motor will not start, just beeps.

After turning off the transmitter the gluonpilot does not change the mode (it will remain in manual/stabilized/autopilot as was specified before the transmitter was turned off) and still shows RC on green with 100%.
I then disconnected the RC receiver from the gluonpilot and on the GCS the RC turned white and showed 0% (so it shows the link state between receiver and gluonpilot, not the link between the RC receiver and transmitter).

After turning off the transmitter fail safe (Futaba T6EX) the motor behaves as follows:
- if in manual mode the throttle remain where it was when switching off the transmitter;
- in stabilized mode - same as manual;
- in autopilot mode the throttle is controlled by the gluonpilot as specified in the navigation program.

Correct me if I'm wrong but RC level indicator works only with PPM signal and also assuming that no fail-safe is turned on the receiver.

Are you connecting your RX to GluonPilot using PWM or PPM signal?

The RC level indicator also works with PWM, but only 0% or 100%:
When the Throttle channel is below 900us, it assumes there is no RC link. This means you have to trim your throttle completely down when setting the failsafe values. The gluonpilot will automatically switch to AP mode when this happens.

I am using PWM.
Modifying the settings on the transmitter (Futaba T6ex, trimmed throttle to minimum, increased EPA to 140%, setup the failsafe) I have around 924us, so it will never trigger.
Is it possible to modify the 900us value without compiling the firmware?

No this isn't possible...
Would it be good if I changed it to 930ms?

Yes, It would be perfect.
Do you have some general outlines on how to compile using the source? I have done this before, it worked, but when I checked the md5 of my firmware with yours it was different.

Download MpLab X and the C30 compiler should be enough.
There is a project file on the SVN server of google code: http://code.google.com/p/gluonpilot/source/checkout