MFD Autopilot

Coyote · July 18, 2014, 05:22:39 PM

I didn`t know that but glad you mention it because I would have thought it would have a speed safety feature, ie below 10 kph no motor arm or something.

I`ve had mine turned on, all systems working from what I can tell but not the motors or servos powered yet.

I like the display, that`s nice, not too much information but enough.

Gundummy · July 18, 2014, 07:45:23 PM

5.2 THR SAFETY Set this option to Y to disable the motor from rotating.We suggest to set it to Y when you are tuning the plane on ground

knew it was there somewhere!

Coyote · July 18, 2014, 07:58:28 PM

Yup in Misc settings, just found it now I have the receiver bound :)

BigT · July 18, 2014, 11:05:21 PM

Yes you can disarm the motor when tuning but remember to turn the lock off before flying else you will have a RTH deadstick. Went for a tuning flight today but never flew as I forgot to pack the wing :-\. Tomorrow or Sunday weather permitting.

Like the abillity to change to Imperial, cannot seem to reduce the radius of the Circle mode.

Gundummy · July 19, 2014, 10:18:00 AM

Circle Radius is under Autopilot Settings menu........

BigT · July 19, 2014, 12:00:26 PM

Quote from: Gundummy on July 19, 2014, 10:18:00 AM
Circle Radius is under Autopilot Settings menu........

Yes I found it but could not get it down below 300 feet. That's a bloody big circle!

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Gundummy · July 19, 2014, 06:56:01 PM

you think so? I'm assuming that its a 50m radius?

so 300ft (100m) circle?

BigT · July 20, 2014, 10:35:25 AM

Something like that. I will look at it again today when I do the testing and tuning flights

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BigT · July 20, 2014, 10:13:06 PM

The test flight today was not an unqualified success. Man mode is ok. Stabilised mode seems to be working ok. Not so good is Altitude Hold and RTH and the compass which is 60 degrees off. Alt does not hold heading or altitude. In rth the model starts to turn but then dives steeply at full throttle until I take back control at about 50m. I have safe altitude set at 150m so it should not descend below that. Circle radius was set to 100m but the actual circle was much tighter than that.

I plan to e mail mfd tonight for help and suggestions

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Coyote · July 20, 2014, 10:42:25 PM

Sounds like you have not correctly calibrated the compass and you have not set the cruise and alt values in the AP properly

BigT · July 21, 2014, 12:17:20 AM

Compass cal and set up as per instructions. Also gyro etc. asi works well. Going to reset back to metric and play with safe height tomorrow to see if that is the issue. Maybe the barometer is out as in Circle mode it just screamed into a very tight descending spiral nowhere near the 300 foot radius it was set to. I wonder if there is a decimal missing and its 30.00 feet cos thats more like the circle it was doing. ALT was not working either. MAN and STB worked well with no problems, horizon was level etc. Video is clear with zero lines. Sent an e mail to MFD so lets see what he says. I had this RTH issue with the FY41 and that was down to a dodgy firmware update so it could be that.

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Gundummy · July 21, 2014, 02:35:41 PM

It might pay you to trawl through the RC Groups thread on the MFD, I can't dig the link out as overseas on my laptop but it clears up a lot of issues and explains more than the manual ever will!

GD

BigT · July 21, 2014, 08:15:30 PM

Just returned from an afternoon with the MFD in my Skywalker 190 (old wing). I started over from the beginning, loaded on the Skywalker parameters, did a common calibration, flew & trimmed, landed Cal Joystick, Cal Comp and flew again. I can confirm that it all seems to be working but will still need some fine tuning to get the best out of it. For example in ALT the model "dolphins" to keep altitude and pulses the throttle. In RTH when it hits the 500m mark and starts either the climb or decent to "Safe Height" the noses waggles left and right. Small things but worth getting right. All the adjustments are in the manual so it's just trial and error. I think the AW 1900 old wing is a bit of a boat, it doesn't much like gusty winds and it was very thermally today. The factory ASI works well but I need to ask MFD what to set the Throttle Min to as I believe it's different when you use the ASI. Oh and the TX failsafe works as well.

I will peruse the RC Groups forum for clues on how to set up 2 3 way switches so you can use ALT and Circ, which I would find useful.

Coyote · July 21, 2014, 11:39:48 PM

I have mine setup as :

Switch 1 - low = Manual, medium = stabilization high = RTH

With switch 1 in stabilization ( medium )

Switch 2 : Low = Stabilization, Medium = Circle, High = Alt

If switch 1 us anything but medium all switch 2 inputs are ignored. Works fine

BigT · July 21, 2014, 11:55:04 PM

Quote from: Coyote on July 21, 2014, 11:39:48 PM
I have mine setup as :

Switch 1 - low = Manual, medium = stabilization high = RTH

With switch 1 in stabilization ( medium )

Switch 2 : Low = Stabilization, Medium = Circle, High = Alt

If switch 1 us anything but medium all switch 2 inputs are ignored. Works fine

Yes I did that as well qnd it does work. See if you can arm it for LAUNCH. I can only get LAUNCH to work if I use 2 channel switch for channel 5.