"I have had similar issues with my elevon models which was partly solved by re-doing the RC handset calibration in the mission planner after having flown and trimmed it manually. I obtained the best results by using the elevon output mixer in the…"
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paul riseborough's Discussions
Batch of faulty 3DR Pitot/Static probes - check yours for leaks
Started Apr 4 0 Replies 1 Like
Two out of three of the 3DR pitor/static probes I have purchased have had significant air leaks where the internal tube joins to the machined aluminium end. In the first instance this resulted in a…Continue
Repeated mid-air APM reboot - only happens at one flying site - possible weather radar interference
Started this discussion. Last reply by paul riseborough Apr 21. 13 Replies 0 Likes
I have three flying sites that I use depending on weather and availability. My primary flying site is located only 800 meters from a weather radar and I have been having repeated in-air reboots when…Continue
Please help - 3DR USB radio will upload firmware but won't enter command mode
Started this discussion. Last reply by Marcin Krawczyk Jan 22. 5 Replies 0 Likes
I have a 3DR 915 MHz v1.1 USB interface radio that will not enter command mode using the 3DR radio config tool and does not respond to any commands. The unit was communicating whenfirst received, but…Continue
paul riseborough's Page
Latest Activity
paul riseborough replied to Seth's discussion Arduplane tracks great in Auto/Loiter/RTL: FBW-A won't turn... in the group ArduPlane User Grouppaul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"ECC is an error correction protocol that send redundant bits and significantly reduces the probability of getting corrupted data. It does however double the physical data sent between the two modems, so the modems air rate needs to be wice the rate…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Could range and bank angle be the reason why this issue seems to be plane specific? - planes fly further away and tilt significantly more than quads which can put the signal from the ground station into a null (angular region of porr antenna gain).…"
Richard replied to paul riseborough's discussion Mods to X-5 in the group Skywalker X5 APM Group"Hi fellow x5 flyers...quick question (It's probably more of an RCG Question, but thought i's ask it here to APM users as well!)
I am having a bit of difficulty getting the CG. I have been flying around fine with the APM on auto…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Good to hear you got it sorted out. WRT the HIL, I have no experience with it as I have been doing all of my sim for development on the SITL. Have you raised a bug…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"I have assumed you have read the wiki about tuning the servo PIDS in the following:
The default gains are set up fairly soft with integrator gain set to zero so any significant pitching moment will overpower the pitch loop. Increase your pitch servo…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Configuration => Advanced params => adv parameters list
You will need to set ATT_CONTROLLER to 1 to enable them
Only available in the beta firmware."
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"In the advanced tuning section I'm thinking adding an instruction at the start to turn CTL_RLL_RMAX to zero initially to disable the roll rate limit as having it active makes the effect of tuning changes harder to observe. I would…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"The ranges shown for the parameters have been set conservatively and with a sluggish airframe like yours you can go higher before getting instability as you found out. However there's really no need to go above 2.5 as this equates to a roll…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Yes, always start tuning control loops from the inside, so do the basic pitch and roll controllers first."
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Nicely tuned,
Excuse me if you know this already, but by increasing the value of WP_RADIUS, you will allow the system to start turning earlier and it will remove the overshoot when capturing the next track segment.
Regards,
Paul"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"The second parameter referred to should be CTL_RLL_K_P. It was fixed in the documentation earlier today.
Regards,
Paul"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"It should be done in FBW-A
Regards,
Paul"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"No need to apologise, the term L1 is a bit misleading and was inherited from the original paper. I've done some L1 norm optimisation of control sequences in the past using linear programming techniques, so my first reaction on seeing the name…"
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"L1 in this context doesn't refer to the use of an L1-norm in the derivation of the control laws. See the pdf tuning guide I posted previously for details."
paul riseborough replied to Andrew Tridgell's discussion ArduPlane 2.72 released"Two additional way-points should solve your issue for the time being, then the tendency to get back on track will be working to your advantage. If enough users want to fly through a waypoint and then fly a non-predictable course to the next we could…"
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