Jason Short's Discussions (43)

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Developer

Arducopter 2.1.1 alpha

This is a work in progress. I've tried to address some fine tuning and performance issues.

Denny R. had made a comment about the inertia of bigger props causing issues. I've added a low pass filter to smooth the positive acceleration of the props to s

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Developer

Arducopter 2 stability patch

Hey, I had a little brainstorm last night after watching the DJI Wookong video. It's a sweet little system, but I wondered if AC2 could do that? So I put a battery on the end of one arm and it couldn't hold level. It came close but 3-4° error meant t

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Developer

2.0.54

This version is bug fixes from 2.0.50-53 had some navigation bugs that manifested themselves in a bad way when flying in adverse condition. I would not recommend flying these in AP and I have deprecated the downloads on Wiki site.

 

If you downloaded 5

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Developer

Arducopter 2.0.51

I know you are all going to hate me, but I made some tweaks to alt hold that I could use a few testers for.

 

This code was intended for 2.0.50 but Jani had a lot of trouble with it so I pulled it. I added a small filter and I'd like to put it back out

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Developer

Arducopter 2.0.50

Arducopter 50 is our first fully Software in the Loop tested version. Special thanks to Tridge for developing the test suite!

 

Here is a quick video of the testing in action:

 

 

You can see the copter takes off, flies a simple square in manual and recor

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Developer

Arducopter 2.0.48/49

There is a preview on GIT right now. I flew a version of this

 

The PWM output has been set to 400hz (to counter the low pass filter in most Turnigy PWMs)

The DCM's Roll and Pitch gains were lowered to .03 (recommendation of Hein Hollander)

Mavlink has g

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Developer

Loiter PIDs

I built a quick sim today to look for the optimum PIDs for Loiter:

 

What's looking good is 

 

Loiter_P = .5 or .6  (more = some overshoot, but not much)
Loiter_I  = zero       (Just say no)
Nav_P    = 4   (Higher than I thought, What will it do to navigat

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Developer

2.0.45

If anyone has any issues or logs to analyze please post them here. I've also updated the Wiki to detail out all of the AP mission scripting commands. If any command doesn't work as expected please post that here as well.

You can also post issues to t

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Developer

Arducopter 2.0.43

I pushed 2.0.43 to Git.

What's new - Simple mode is dead. It's now an option per switch position. There is an APVar bitmask called simple_modes or "SIMPLE". Setting any bits 0 - 5 to 1 will cause that switch position to access simple mode. You can als

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Developer

Arducopter 2.0.42

Just posted this version which has an increased performance DCM implementation. This allows the main loop to run 50Hz faster without increasing the CPU load. I've flown this for 30 minutes and it's an improvement in every respect.

 

Circle mode now see

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Developer

2.0.41

I updated a new version which has a fix for Alt hold and some new tuning capabilities.

 

The older alt hold had a typo that was found by randy that seriously degraded performance (the rate PID loop was skipped entirely). You should see much better resu

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Developer

Arducopter 2.0.40a

This is not a safe version to fly unless you know how to step through things and test throughly. I'm away on vacation and I don't have a machine to fly it on.

What I'd like to know is the SIMPLE mode works well or not.

UPDATE: I reworked the files to g

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Developer

2.0.38 help and suggestions

Working on the next revision. Here's what's coming:

- Moving imu and baro calibration to the arming sequence, anything else?

- Simple mode with alt hold?

- Tridge's max motor fix for Hexa's and Octa's

- A new Octa setup from Hein for better performance.

 

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Developer

Arducopter 2.0.34 Preview

Hi All, 

I just posted a new experimental version of Arducopter with new PIDs and control laws for Yaw. It's download only for now and I wouldn't recommend trying it unless you can rigorously test it. Please be careful. I've flown this in Stable, Simp

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