Mark Peterson
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Mark Peterson's Discussions

Takeoff command altitude bug

Started this discussion. Last reply by Michael Oborne Sep 4, 2012. 1 Reply

On MP 1.2.10, if I add a takeoff command to my flight plan, write it to the APM and then read it back, the altitude parameter winds up being [whatever I originally set the takeoff altitude to…Continue

Skywalker params

Started this discussion. Last reply by Steven G Aug 11, 2012. 1 Reply

I'm setting up a Skywalker with a 1.4 APM and the 2.5 firmware. Could someone tell me what initial parameters to use for the airframe? With all the changes lately, I'm not sure if the skywalker.param…Continue

Tags: Parameters, Skywalker

Takeoff angle bug?

Started this discussion. Last reply by Michael Oborne Jun 2, 2012. 7 Replies

I've been playing around with the takeoff command (APM 1.4) and any time I put in a takeoff angle of greater than around 260 degrees, the angle in the autopilot gets set to a radically different…Continue

Altimeter deviations

Started this discussion. Last reply by Mark Peterson May 1, 2012. 1 Reply

In the last couple of months, I've built two UAV's based on the Bixler airframe and the ATMega 2560 autopilot with XBee 900 Mhz telemetry. UAV1 has been flown a number of times and seems to be…Continue

 

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DeveloperMichael Oborne replied to Mark Peterson's discussion Takeoff command altitude bug
"i cant replicat your issue. can i get more info."
Sep 4, 2012
Mark Peterson posted a discussion

Takeoff command altitude bug

On MP 1.2.10, if I add a takeoff command to my flight plan, write it to the APM and then read it back, the altitude parameter winds up being [whatever I originally set the takeoff altitude to be]-[Current plane altitude]. For example with the plane at 328 meters, if I set the takeoff alt parameter to 10, write to the APM and then read it back I wind up with a takeoff alt of -318. Reported as issue 733, APM 1.4, Ardupilot 2.6.- MarkSee More
Aug 31, 2012
1 Comment
Steven G replied to Mark Peterson's discussion Skywalker params
"I'd like to know this too. Chris suggested not loading the earlier SW parameters and instead fine tune from the 2.50 basic."
Aug 11, 2012
Mark Peterson posted a discussion

Skywalker params

I'm setting up a Skywalker with a 1.4 APM and the 2.5 firmware. Could someone tell me what initial parameters to use for the airframe? With all the changes lately, I'm not sure if the skywalker.param in the repository is a good starting point anymore or not....Thanks,- MarkSee More
Aug 1, 2012
1 Comment

DeveloperMichael Oborne replied to Mark Peterson's discussion Takeoff angle bug?
"Mark, yes, a mag for autotakeoff would be a good idea."
Jun 2, 2012
Mark Peterson replied to Mark Peterson's discussion Takeoff angle bug?
"Thanks Michael, that explains a lot! I had convinced myself that angle had something to do with compass angle because our aircraft like to depart in directions other than the launch vector when using the takeoff command. Probably bad launch…"
Jun 2, 2012

DeveloperMichael Oborne replied to Mark Peterson's discussion Takeoff angle bug?
"take off angle is meant to be the takeoff pitch angle, not anything else.   ie 0 to say 45 degrees."
Jun 1, 2012
Mark Peterson replied to Mark Peterson's discussion Takeoff angle bug?
"Thanks Chris, issue reported. I'm still new to this solution and so am still learning the ropes. I'm working hard within my company to promote the use of this platform for our UAV solutions. I'm on my fourth UAV build based on the APM…"
Jun 1, 2012
Mark Peterson replied to Mark Peterson's discussion Takeoff angle bug?
"Thanks David, apparently no one has attempted to take off to the northwest before. LOL"
Jun 1, 2012

3D RoboticsChris Anderson replied to Mark Peterson's discussion Takeoff angle bug?
"As always, if you want it reviewed by the dev team, file an Issue Report."
Jun 1, 2012
davidbuzz replied to Mark Peterson's discussion Takeoff angle bug?
"Given that many numbers are internally stored as a byte, with a maximum possible value of 255, its entirely possible you've found a bug."
Jun 1, 2012
Mark Peterson posted a discussion

Takeoff angle bug?

I've been playing around with the takeoff command (APM 1.4) and any time I put in a takeoff angle of greater than around 260 degrees, the angle in the autopilot gets set to a radically different angle. For instance, when I set the takeoff angle to 330 and then read it back in mission planner, I wind up with a takeoff angle of around 070. Not double checking this resulted in the destruction of one of our Bixlers. Perhaps I am not understanding the angle portion of the takeoff command. Is this a…See More
Jun 1, 2012
7 Comments
Mark Peterson replied to Chris Nagawiecki's discussion Canceled Easystar Project
"I'd be in the market for the Turnigy 9x and other various parts. What are you thinking on shipping?"
May 27, 2012
Mark Peterson replied to Farmer John's discussion Farmer looking for advice.
"I'd consider a glider like the ones for sale at http://www.event38.com. They're not set up for video by default, but the airframe is called a Skywalker and if you google "skywalker fpv" you'll get lots of hits on how to set…"
May 3, 2012
Mark Peterson replied to Mark Peterson's discussion Altimeter deviations
"Just to close the loop, I definitively determined that the source of the altitude deviations was due to the XBee by removing it and hooking up to the autopilot via USB. The altitude readings were quite steady w/o the telemetry module. Based on tips…"
May 1, 2012
Mark Peterson posted a discussion

Altimeter deviations

In the last couple of months, I've built two UAV's based on the Bixler airframe and the ATMega 2560 autopilot with XBee 900 Mhz telemetry. UAV1 has been flown a number of times and seems to be performing reasonably well. I started testing UAV2 on Friday and am seeing some significant random deviations (+/- 30 meters) in altitude measurement while the UAV is sitting immobile on the ground. The VSI deviates as well (+/- 100m following the altitude deviation). For benchmarking purposes, I fired up…See More
Apr 30, 2012
1 Comment

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