Just amazed at how you were able to squeeze that board in there. As mentioned…you are months (if not years) ahead of me. Perhaps you can suggest a better thread (or I could start one) on what are the 2019 top pics for flight controllers for the TRADITIONAL 450 size heli? I’ve got my eye on the CUAV V5 nano: http://en.cuav.net/article/MjAwMjE2MjE2MjA4MTkyWkRJWQ==
Also, if possible, could you PM me over at Helifreak.com. User: onepiece
Had a few more 450 questions that would bore the forum readers. Don’t think PMs are available on this site. Thank you again and all the best.
Mike, Please create new topic/post new question related to the traditional 450 size heli in this forum. I don’t think pixhawk flight controller for 450 size heli is used by many people but Chris Olson and other experts in this forum can provide some guidances on this as well. I got all questions related to pixhawk for 450 size hei answered here in this forum
Hello Chris - I too am in the market for a “frustration free” controller for a 450 sized traditional electric heli (flybar-ed). Is Pixhack V3x still your recommendation as the go-to unit? I’m overwhelmed with choices and don’t have the experience to make an informed decision. Any thoughts on Pixhawk 4 MIni or the new CUAV V5 nano? I like the smaller size and lighter weight of those for my small heli…but based on your words in this forum…the V3x is still the best bet overall? Thanks for your thoughts. Mike
Hi Mike,
I know Chris has been tied up with some other stuff lately. But I think he and I agree that the CUAV V3x are great units to use for your application. I have one and the larger V5 and love both of them. I have not used the CUAV V5 nano nor have I used the Pixhawk 4 mini. Not sure that Chris has used them either. Hope this helps.
Thank you for sharing your valuable knowledge, Bill. Very helpful. Due to 450 size constraints, I’d have to mount on the side frame as Chris did in this video demo’ing the V5:
Did you buy your V3x from Ali Express or the CUAV web site or? Which LIGHTWEIGHT (and frustration free) external GPS unit would you recommend to pair with the V3x? Sorry for the volume of questions…I’m VERY new to this and have a limited budget. Want to get it as close to ‘right’ as I can with the fewest missteps and crashes.
PS - Will create a new thread for future questions on this topic as I seem to be meandering off the original topic. All the best & thanks again.
Just buy from AliExpress. You’ll still deal directly with CUAV.
GPS: I’m a big fan of the mRO GPS units, but the new GPS units also work well. Just be aware that none of them seem to line up the compass orientation, so you always need to make sure that you have the correct orientation set.
Neither of these units are cheap, but work extremely well. You will , in most circumstances have to redo the cable(s).
Agree with Jakob.
I changed on my TR600 from the Pixhawk 2.1 (cube) with a HERE GPS quipped to a new CUAV Pixhack V3 with the CUAV GPS ( works very well) and I am surprised that my problems with vibrations are totally gone. No more Tb!
And I saved weight because the Pixhawk 2.1 needed a solid Aluminum block underneath.
The purchase from AliExpress was no problem.
I am setting up a 800 gasser with cube, heli is tuned from the default tuning procedure. Alt hold is working properly.but when I put it in loiter it starts moving in roll and pitch i.e. toilet bowl effect. After tuning PSC gains it is somewhat stable but not perfect.
I have checked logs but it is showing position still drifts, only after few seconds it maintains position.
Rish,
Your link to the Param file came up as the log file. Please post your param file so I can look at your setup. I will look at your log file later tonight when I get home.
Regards,
Bill
Sorry I was outside , away from my laptop. Tomorrow I will share my parameters. But I m sure u can check my parameter from binary file which I have shared.
Hi Rish,
So I looked at your parameters and your log file. In order for the loiter or any of the assisted modes including auto mode to work properly, you have to have your actual pitch and roll attitude following your desired attitude. Here is what you data looks like
This is caused by the ILMI parameter for pitch and roll being set to zero. I recommend this being set to 0.08 for both pitch and roll. Fix that issue and then we can see how well your aircraft is holding the desired attitudes. Also please set your LOG_BITMASK to 131071 or at a minimum select fast attitude logging.
Hi Rish,
No, the TBE is not related to the ATC_INPUT_TC. Your setting is perfectly fine. In fact I prefer mine to be between 0.2 and 0.25. I will look at your log tonight to see how well the actual attitudes are tracking the desired. It should be much better now that you have the ILMI.
I will say that I am not an expert in tuning the loiter mode. I am still learning. there has been other users that say that PSC_VELXY_D gain has to be set to zero for heli’s. I have not done any actual flight testing of this but I have done some work in the sim and adding a little PSC_VELXY_D has helped tremendously with better position keeping in loiter. So if you care to experiment with this parameter, feel free. I would increase it in small increments, maybe 0.05. Be prepared to switch back to stabilize mode if the aircraft starts to oscillate excessively. I would only use enough to remove the TBE.
