Logging airspeed on 2.74 onwards...?
Does anyone know which parameter group I can find airspeed to log (passively). I have looked in CTUN and NTUN but neither appear to have this listed. Any hints and tips here...?
Read more…Andrew Rabbitt's Discussions (21)
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APM in a 250
The crazy man in me is trying to stuff an APM into a cheapie HK250GT as a method to waste an inordinate amount of time. (and likely also money)
It is a great lesson in weight reduction and miniaturization with many more lessons to be learned - proba
Mapping servo neutral and end points...?
Does anyone know any way of mapping the servo mid and end points that APM uses?
I have modified elevons on my Skyfun which, unfortunately, have a limited down travel. If the elevon servo forces it beyond the limit there is a risk of bending the pushr
Read more…Arduino/Ardupilot IDE "hangs" whilst attempting to complie
I'm trying to compile a (very) subtly modified version of Arduplane 2.74b using the IDE downloaded from the Arduplane website (1.0.3) but it hangs when I try to compile. Actually, it doesn't hang fully, just the compile status bar stops about half w
Read more…Possible for via to be incorrectly formed? - APM 1.4
I'm trying to get an APM 1.4 board running and am having difficulty seeing the radio signals.
I have successfully reloaded the PPM firmware and it appears to be running correctly, with the blue LED flashing in proportion to throttle.
Still, the radio P
Read more…How heavy is APM2.5?
I'm trying to find out what weight advantage APM2.x has over a 1.x version.
Has anyone this info? I can't find it on the store website or elsewhere, but maybe I'm being dumb...
Read more…PPM + additional PWM/frequency inputs? (Sonar + motor speed)
OK, so I am the complete empty bottle on this subject, but I want to pose this question to get an idea of how stupid it is...
I want to run the LV-EZ0 on my APM1 (Arduplane) as well as the pitot-static, so I thought it might be nice to plug the LV's
Read more…PPM with Futaba R617FS?
So, I am using the R617FS which I normally connect with PWM inputs for each channel. Some surfing has dug up this mod which outputs PPM from the R617FS on which ever pin you choose, but only the first five channels.
Does the current APM failsafe/PPM
Read more…Skyfun UAV build
Well, after a long time in the theoretical world, I decided it's time to see how APM works in reality, so I splashed some cash and ordered this and a bunch of other parts from Hobby King:
At this point, my MS Excel OCD set in and I felt the need to f
Read more…On-board data logging access without CLI?
Now that the CLI has been done away with on Arduplane 2.something-or-other, does anyone know whether on-board data is still being automatically recordered in flash and, if so, how do we access it now?
Also, if I'm running HIL, does the above still app
Read more…Now that the DIP and Slider switches appear to be redundant...
...can I pull off the switch block and wire/configure these ports as outputs to control my HD170 camera by pushing it's buttons via software on the APM?
I plan to power the HD170 over its USB port, tying it to the ground of the APM so I'm assuming the
Read more…Is it me, or is APM code just really hard to find one's way around?
I'm trawling through the APM Arduplane 2.28 code base trying to locate where the PID loops are calculated and hence where the gains applied.
I want to be able to implement a density altitude/Mach/TAS-based factor on the PID gains to allow (simulated)
Read more…Wrong airspeed in X-plane HIL
Prompted by Larry Grater, I investigated the airspeed that APM Mission Planner is pulling in from X-plane and handing to APM.
It appears that It is confusing X-plane's TAS with IAS. Seeing that APM will only know airspeed as indicated airspeed from a
Read more…Accurate control surface simulation with X-plane and APM-MP?
I'm experimenting with flying wings in X-plane using HIL with APM-MP as a few of you guys are doing. I have made up my own aircraft models in plane maker, but there is one thing that I'd like to do to make it super realistic, if possible, and that
Read more…When in HIL, APM is still getting IMU data from Oilpan, not X-plane - Why?
I'm using the latest (1.1.18) version of Mission Planner with X-plane. I reflashed my APM1280 with the latest version (can't remember what it picked!) and all seems to be configured correctly, but I'm missing something!
I can fly the aircraft manuall
Read more…HIL_MODE_SENSORS? Anyone using this?
I've been successfully using HIL with X-plane and APM Planner Buld 1.0.16, but decided last night to try to get it to run with X-plane supplying all the sensor data and having the DCM strut its stuff.
Alas, no joy was had as the APM Planner always tim
Read more…DCM - how is the order of rotation chosen?
OK, I've been puzzling over this question for a while, but I've not found an answer yet. Perhaps the gurus here can tell me?
So when integrating the three gyros that are obviously rotating simultaneously, when you come to fuse them together to rotate
Read more…Idiots guide to classes, constructors etc for Arduino?
OK, so I'm trying to get my head a little further around the APM code, but there seems to be a lot of stuff involving classes, constructors etc that doesn't leap out at me from the arduino.cc online documentation.
Does anyone have a basic primer on ho
Read more…How can I get an ISZ500 gyro...
...to Australia without spending a fortune in shipping costs?
My APM IMU Z-gyro is, by the looks of things, stuffed and I would like to have a go at replacing it. (all other things being equal, the board is stuffed anyway...)
At the moment, it looks
Read more…Stuck Z Gyro - Can I fix it?
Hi,
I have an APM with a Foxtrot IMU and my Z gyro has stopped working for the second time. The first time I sent it back to Jordi and he returned it saying all was good - nothing wrong with it. Well, that was a bit embarrasing - I though I was goi
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