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09-01-2010, 05:30 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Dynon AP improvements posted
For those that are interested, the new AP improvements have been posted on the Dynon site for the D1?? Products...
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09-01-2010, 07:36 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Most of the AP improvements in 5.4 are related to improving pitch axis performance... Here are the new parameters they gave us access to:
Pitch Gain: Use only after sensitivity is set as well as it can be. Increase gradually if airplane does not settle on altitude. The default setting is 20.
Altitude Gain (ALT GAIN): Use only after sensitivity and all of the above settings are set as well as they can be. Increase gradually if airplane levels off too soon. Reduce gradually if airplane overshoots altitudes after climbs and descents. The default setting is 6.
Pull Rate: Use only after sensitivity and all of the above settings are set as well as they can be. Controls the rate the AP will push or pull when changing vertical speed. The default setting is 10.
VSI Gain: Use only after sensitivity and all of the above settings are set as well as they can be. Increase gradually if overshooting altitude after climbs or descents, decrease if rounding out too early. The default setting is 15.
G Error Gain (G ERR GAIN): Use only after sensitivity and all of the above settings are set as well as they can be. Increase gradually if vertical speed changes are not smoothed enough; Decrease if ride is too harsh. G Error Gain adjustments affect the most noticeable changes while the aircraft is in turbulence. The default setting is 10.
G Error Limit (G ERR LIM): Use only after sensitivity and all of the above settings are set as well as they can be. Controls the max additional G the autopilot will push or pull to control vertical speed (up to the G limiter). G Error Limit adjustments affect the most noticeable changes while the aircraft is in turbulence. The default setting is 25.
Here are my settings I have after much testing. Remember I have an RV7 bone stock with an SV42 pitch axis servo: - Pitch Max Torque: 60%
- Pitch Sensitivity: 18
- Pitch Gain: 22
- Altitude Gain (ALT GAIN): 15
- Pull Rate: 10
- VSI Gain:15
- G Error Gain (G ERR GAIN): 10
- G Error Limit (G ERR LIM): 25
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09-01-2010, 07:37 PM
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Join Date: Jun 2008
Location: Charlottesville, VA
Posts: 801
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From Dynon's website, and a mighty bold statement:
?With this latest upgrade, our autopilot system now leads the industry in performance.?
__________________
Jim Shannon
RV-8 N52VV
Charlottesville, VA
AFS 4500 EFIS & 3400 EFIS/EM
G430W - SL30 - G327 - G696 - G240
TT DigiFlight II VSVG w/pitch autotrim
VP-X Pro
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09-01-2010, 07:41 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Hmmm...Agree with you there! I would let the masses decide that one! Bold indeed! That being said, I think you will hear some good reports soon!
Those marketing folks.....
We do make the best Baked Beans though
Quote:
Originally Posted by flickroll
From Dynon's website, and a mighty bold statement:
?With this latest upgrade, our autopilot system now leads the industry in performance.?
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Last edited by Brantel : 09-01-2010 at 07:43 PM.
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09-02-2010, 01:29 PM
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Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
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CAUTION!
I just spent the morning trying to upload the newest version and it has screwed up my system. Don't know what the problem is yet, but I get error messages while uploading to the D100 and eventually the program quits.
Will post again when/if the problem is fixed.
greg
__________________
Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
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09-02-2010, 01:40 PM
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Join Date: Jul 2005
Posts: 118
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Greg this happened to me on the previous update. Turned out the problem was that I did not disconnect other serial devices such as the gps.
__________________
Todd Neidinger
RV-9 Flying
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09-02-2010, 01:43 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Give em a call if you have not already. Better to have their guidance rather than turning your boxes into bricks that have to go back to the factory to get them unhung...
It is inevedible that someone will have problems with updating firmware since there are so many variables involved.
Those of us on the beta teams of these manufacturers update firmware sometimes multiple times in the same week. It gets easier the more you do it and the more you limit the variables. (like using a computer that you know will work etc.)
Already at least one non beta member has reported on the Dynon forum that his update went fine so there must be some variable that is causing you pain that not everyone will run into.
I have had no issues updating firmware on my Dynon ever since Dynon replaced my D100 that had issues out of the box with the DSAB (that is a story in itself). I have gone forwards backwards from alpha to beta to release candidates to final release. No issues but I know that does not help your situation since you are having some issue.
They will help you figure out what variable is causing the trouble and get you up and running...
I am so glad that the industry is moving away from serial port firmware updating. Too many variables with computers, serial ports, drivers, operating systems, cables, etc.....It is a miracle that manufacturers ever decided to let customers do their own updates this way. I like the "stick an SD card in the slot" method myself!!!
Last edited by Brantel : 09-02-2010 at 01:47 PM.
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09-02-2010, 01:58 PM
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Join Date: Mar 2007
Location: Woodinville, WA
Posts: 533
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Quote:
Originally Posted by Brantel
I am so glad that the industry is moving away from serial port firmware updating. Too many variables with computers, serial ports, drivers, operating systems, cables, etc.....It is a miracle that manufacturers ever decided to let customers do their own updates this way. I like the "stick an SD card in the slot" method myself!!!
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Amen to that. Additionally, with a D100, D120, AP74, HS34, and two servos, the upgrade instructions make my head hurt:
http://dynonavionics.com/docs/suppor...re_201008.html
One of the lesser-mentioned reasons I wish I'd gone with the Skyview or something else.
-Rob
__________________
Rob Kochman
RV-10, Flying as of March 2011 ( blog)
Paine Field (KPAE)
EAA Chapter 1440
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09-02-2010, 04:22 PM
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Join Date: Nov 2005
Location: KRTS
Posts: 1,798
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Quote:
Originally Posted by Brantel
Hmmm...Agree with you there! I would let the masses decide that one! Bold indeed! That being said, I think you will hear some good reports soon!
Those marketing folks.....
We do make the best Baked Beans though 
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Can I pet your talking dog?
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09-02-2010, 08:43 PM
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Join Date: Sep 2006
Location: Powder Springs, GA
Posts: 116
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Very satisfied!
I installed the update this evening. The first time I ran the update it failed in the middle saying something about losing a connection. I ran it again immediately and it worked liked a charm. I took it up for a flight and left all the settings at default. It was like night and day. Before the plane would oscillate so bad it would make me nauseous. Now it's like a human is flying. It anticipates leveling off before getting to the target altitude and then very lightly brings you to the exact altitude. I flew through some light chop and it held altitude and heading very well, with light and smooth corrections that were almost unnoticeable. Two big thumbs up for Dynon! 
__________________
Jared Solomon 
A&P, EAA Technical Counselor
Powder Springs, GA
2020 Dues Paid
RV-14A (N214WJ) - Flying since Sept 2017
RV-7A (N211WJ) Flying since 2009 (SOLD)
RV-7A (N132RD) bought flying 2014 (SOLD)
KPUJ (Silver Comet Field)
Youtube channel: http://www.youtube.com/jmsolomon2000
RV-14 Build Log: http://rv14.jaredsolomon.net
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