JR 8103 Gyro Control
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Home > Articles & Tips Index > Radio Systems > JR 8103 Gyro Control

[Courtesy of Ron Richardson ron_mail "at" bellsouth.net, January 2000]

Sherman and the List;

I have the above radio and would like to program it to control my Futaba "Pilot assist" while in flight. The "pilot assist" functions like a two axis gyro except it uses optic sensors to detect the horizon. I would like, at least, to enable/disable it in flight (so it doesn't mask thermal activity).

The radio is currently set up as per Sherman's instructions from April 97 for a standard tail 6 servo plane. I have begun to play with it plugged into the aux3 slot in the RX. The problem so far is the butterfly switch causes aux3 to go from stop to stop when activated/deactivated. That may not sound too bad except I would like to have it smooth out landings as well. Maybe I can't have my cake and eat it too. Just thought I'd ask.

In summary, does anyone have any tips for programming an XP8103 to control a 6 servo sailplane and an auxiliary device at the same time?

TIA & thermals 2 U 

Later I wrote...

Since no one seemed to have an opinion, I thought I'd post the results of my trial/error approach to the problem.

The problem was: How do we put an auxiliary device on the aux3 channel and have proportional control in both flight and landing modes?

First, having flown with a 347 for 6 years and programmed a 783 a number of times, I'd like to say that Sherman's approach is superior to the one I had used.

Second, although there probably is a better way, this is what I did to get the problem solved. Here are the basic steps:

set mix 4 to pot5->aux3 rate: +100% +100% SW: on offset +170

set mix 6 to aux3->aux3 rate: +100% 0% SW: btfy1 offset -512

aux3: norm

trvl adj aux3 +100% -100% sub trim aux3 -170

Now I can have full in-flight adjustment of an "autopilot" or gyro device. The plan is to turn the auto pilot off for thermalling, then when she gets too high to see, dial in the autopilot and head cross country. I also will have a thermal sniffler on board to maximize/minimize flying through lift/sink at speck altitude. Lastly, the plane will have an altimeter watch to measure just how high she gets. This is what happens to some when they've been flying for too long:)

Hope you got something from this (even if its just a smile).


-- Ron

Birmingham, AL, USA


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