Justin Mayfield
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  • Auburn, AL
  • United States
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APM1 vs APM2

Started Sep 6, 2012 0 Replies

I have only worked with the APM's a little but from what I have seen there is a difference in some of the flight charactics. My question for you guys is which one do you think is the better setup?…Continue

Trouble Flying the Autopilot with the Multiplex EasyStar

Started this discussion. Last reply by Beerwiser Jun 7, 2012. 8 Replies

So I am trying to get the autopilot on the APM2 board to fly my rc plane and have thus far only been able to crash it.Manual mode works fine, but whenever the APM2 chip is requires, it seems as if…Continue

The only thing it will do is circle....

Started this discussion. Last reply by Andre S Apr 23, 2012. 3 Replies

Our problem is when the autopilot is activated in any of the modes it just circles. It does not just circle at a GPS location it drifts and looses altitude as well. We use the Easy Star airframes…Continue

 

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Justin Mayfield posted a discussion

APM1 vs APM2

I have only worked with the APM's a little but from what I have seen there is a difference in some of the flight charactics. My question for you guys is which one do you think is the better setup? Currently we are using a Bixler setup but I think I'm going to move to a larger airframe so available space isn't an issue. Which as far as sensors and available options do you feel is the best?Thanks,JustinSee More
Sep 6, 2012
Beerwiser replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"When I was running eagle tree on only 3 channels I would get the death spiral so I did the mod and it helped on the eagle tree, but have only used the APM with ailerons so I can't help there.  Here is a good guide…"
Jun 7, 2012
Crasher replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"I really don't think swapping them is a good idea. Just increase your stabilse gain in planner and you should be fine. I had to do that to, the default gain is tiny."
Jun 7, 2012
Justin Mayfield replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"On the ground it seems as if the control surfaces are working correctly, however, the rudder hardly moves, although it moves in the right direction. When I swap the rudder servo to the aileron output, the rudder moves much much more."
Jun 7, 2012
Crasher replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"My apologies for the double post. This page of the Wiki shows what APM output is what: http://code.google.com/p/ardupilot-mega/wiki/APM2RC I don't think I deviated from this but my memory is Terrible!"
Jun 7, 2012
Crasher replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"The APM flies the Easystar just fine without ailerons. More Easystars have flown with APMs installed than probably anything else so you choice of plane is not a problem. In stabilise mode, holding the plane in your hands with throttle off, do the…"
Jun 7, 2012
Andre S replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"No, I haven't tried that. But I believe that earlier versions of ArduPlane didn't even make use of the rudder but I may be mistaken. The last time I was flying the EZ with APM was some time last year. Now actually switched to a Multiplex…"
Jun 7, 2012
Justin Mayfield replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"Thank you for the reply. I had not thought of that, but it seems like it could work for us. Will be testing the plane tomorrow with a whole array of possible fixes.   Have you ever tried it with the rudder output going to the rudder servo and…"
Jun 7, 2012
Andre S replied to Justin Mayfield's discussion Trouble Flying the Autopilot with the Multiplex EasyStar
"Do you use the correct channel? IIRC, for a 3-channel plane with only ailerons one is supposed to connect the rudder servo to the aileron channel. Have been using a 3-channel EZ myself for a while and had no problems with levelling."
Jun 7, 2012
Justin Mayfield posted a discussion

Trouble Flying the Autopilot with the Multiplex EasyStar

So I am trying to get the autopilot on the APM2 board to fly my rc plane and have thus far only been able to crash it.Manual mode works fine, but whenever the APM2 chip is requires, it seems as if the plane just spirals downward (not like a failsafe, but like a crash). We have done much debugging, and upgrading and following what is going on in these forums, but have been unsuccessful in making this plane work.I am now wondering whether or not I need a new type of plane, because this EasyStar…See More
Jun 7, 2012
Andre S replied to Justin Mayfield's discussion The only thing it will do is circle....
"Hmm.. strange indeed. About your reversed channels: I had a similar experience with my easystar but I solved it by changing the settings in APM (via the dip switches or software don't remember). But you at that in FBW on ground the control…"
Apr 23, 2012
Justin Mayfield replied to Justin Mayfield's discussion The only thing it will do is circle....
"Ok, when mission planner displays our location we use a google maps satellite view and it is exactly where we are standing so I would assume that the positions are lining up. Yes when the GPS gets a lock for the first time initially I reset the APM.…"
Apr 22, 2012
Andre S replied to Justin Mayfield's discussion The only thing it will do is circle....
"Hi, can you confirm that the mission planner gives you the correct location? I read somewhere (also based on personal experience) that it's a good idea to reset APM once the GPS shows a lock. Otherwise you may falsely assume that it has one.…"
Apr 22, 2012
Justin Mayfield posted a discussion

The only thing it will do is circle....

Our problem is when the autopilot is activated in any of the modes it just circles. It does not just circle at a GPS location it drifts and looses altitude as well. We use the Easy Star airframes with APM 1.4 and APM 2.0 with the xbees. Currently we are using the Mission Planner software (most current version) to do all mission planning and parameter updates. We have the configuration files from DIYdrones uploaded onto the APMs and we upload the way-point files like I said earlier with the…See More
Apr 22, 2012

Profile Information

About Me:
I am a senior at Auburn University pursuing a Wireless Engineering Degree.
Please tell us a bit about your UAV interest
Currently I am working with Auburn University on their UAVs updating and assembling new aircraft. The purpose for our UAVs are to implement collision avoidance algorithms to have multiple planes flying in a confined area autonomously.
Hometown:
Orange Beach, AL

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