LibrePilot Forum

Users => Vehicles - Fixed Wing => Topic started by: rcrichfl on September 21, 2017, 06:32:15 pm

Title: Help with TxPID
Post by: rcrichfl on September 21, 2017, 06:32:15 pm

Gents, I was able to set up and verify operation of the CC3D in Rate mode. Now. I want to take advantage of the TxPID, and I configured following readings and videos, but I cannot get results. I assigned a slider to CH 6, and I can see the input values, but the PID values in the stabilization screen do not change. Attached are some screen shots, that shows what do I have. I am using PWM for all channels, and I have updated the soft as suggested in Libre Pilot.
I think I am missing something, but after trying for two days different configurations I cannot figure out why what it should work, does not.

Title: Re: Help with TxPID
Post by: f5soh on September 21, 2017, 07:18:34 pm

If you want something changing in Stabilization tab you may set some range, this means min and max values different in TxPID tab.

You can also use the EasyTune feature that allow some fixed coefficients, allowing change P and ID numbers at same time with one input.
Maybe do some tuning for Pitch and next, other session for Roll.

Title: Re: Help with TxPID
Post by: bladan on December 13, 2017, 10:58:36 pm

Hi everyone,
I'm tring to use TxPID function but after i set my preferences there is non way to arm the motors, if i deactivate TxPID everithing starts to work fine!
with "always mode" I can see updating the pid values rotating the pot.
what's wrong?!

CC3D evo
tx fs-i6 with i.bus

Title: Re: Help with TxPID
Post by: f5soh on December 13, 2017, 11:10:29 pm

Hi,
Looks the SystemHealth panel in Flight tab... maybe a alarm.
Post your config file maybe.

Title: Re: Help with TxPID
Post by: bladan on December 14, 2017, 05:52:31 pm

tank you  for the fast reply, SystemHealth panel says Memory critical, how can Isolve this problem?

Title: Re: Help with TxPID
Post by: TheOtherCliff on December 14, 2017, 06:34:55 pm

You need to "simplify" your setup.  Running extra modules, extra fancy options takes more memory.

I see in your signature that you are using MWOSD.  I think that you will reduce your memory needs by converting to MinOpOSD that uses native LP format instead of needing to convert for MW format.  At least that is what I have heard.

And for future FC purchases, go with something with a better processor like Revo or Sparky2.  It looks like Omnibus F3/F4 is currently in the unreleased development build called 'next' and will be available in the next release.  They are $17 or so and come with OSD and voltage/current sensor.

I would guess that MWOSD protocol should actually be removed from CC3D firmware...

Title: Re: Help with TxPID
Post by: bladan on December 14, 2017, 06:45:33 pm

Thanks a lot, after disabling MPW protocol memory problem are solved.
I need TxPID only to found PID values after that, I can deactivate it and enable MPW again!