Posts: 302 Threads: 46 Likes Received: 152 in 88 posts Likes Given: 61 Joined: Oct 2018 Reputation: 11 I watched numerous videos of youtubers explaining PID's but it didn't quite jell with me.
I stumbled onto this vid, which by the way is not directed to tuning quads but it explains it very well
This gave me an 'ah hah' moment for understanding tuning
To help viewers out:
*The switches turn it on/off...duh
*Left knob would be your stick
* wheel attached with band to second wheel with arm shows the reaction of the quad to adjusting PIDs
*P
*I
*D
He uses the on/off to replicate moving a stick on the quad
Notice that the operator turns I and D off, then adjusts them later Posts: 21,222 Threads: 583 Likes Received: 8,954 in 6,625 posts Likes Given: 1,425 Joined: Jun 2018 Reputation: 786 Yes, I thought that that visualisation was a really good way of demonstrating how each of the 3 variables work. PIDs can be confusing to a lot of people so it helps to get your head around it  Coincidentally, hugnosed_bat posted the same a few days ago HERE. Posts: 302 Threads: 46 Likes Received: 152 in 88 posts Likes Given: 61 Joined: Oct 2018 Reputation: 11 (24-Nov-2019, 01:46 PM)SnowLeopardFPV Wrote: Yes, I thought that that visualisation was a really good way of demonstrating how each of the 3 variables work. PIDs can be confusing to a lot of people so it helps to get your head around it Coincidentally, hugnosed_bat posted the same a few days ago HERE. Sorry I wasnt aware of that post. ![[-]](https://intofpv.com/images/collapse.png) • Posts: 302 Threads: 46 Likes Received: 152 in 88 posts Likes Given: 61 Joined: Oct 2018 Reputation: 11 (24-Nov-2019, 01:48 PM)roger74 Wrote: Sorry
I wasnt aware of that post. Should I delete this one or let it stay? • Posts: 21,222 Threads: 583 Likes Received: 8,954 in 6,625 posts Likes Given: 1,425 Joined: Jun 2018 Reputation: 786 It's not always possible to be aware of every post on the forum but it's fine and I would just leave it It shows that more than one person has the same thoughts, which is a good thing Posts: 6,104 Threads: 172 Likes Received: 2,283 in 1,830 posts Likes Given: 4,730 Joined: Feb 2019 Reputation: 100 24-Nov-2019, 07:09 PM (This post was last modified: 24-Nov-2019, 07:10 PM by hugnosed_bat.)  the video is that good and important - at least for me - more threads need it ;-) Posts: 5,866 Threads: 47 Likes Received: 2,779 in 2,241 posts Likes Given: 7,629 Joined: Jul 2019 Reputation: 97 I like it; best explanation I have seen yet. Goes good with voodoo614's [Tutorial] PID tuning cheatsheet  • Posts: 668 Threads: 31 Likes Received: 208 in 158 posts Likes Given: 95 Joined: Feb 2019 Reputation: 14 Posts: 5,866 Threads: 47 Likes Received: 2,779 in 2,241 posts Likes Given: 7,629 Joined: Jul 2019 Reputation: 97 Maiden Flight, Yes, that one is good as well. I think I am beginning to learn something.  • Posts: 668 Threads: 31 Likes Received: 208 in 158 posts Likes Given: 95 Joined: Feb 2019 Reputation: 14 23-Jul-2020, 06:22 AM (This post was last modified: 23-Jul-2020, 06:23 AM by Maiden Flight.) (22-Jul-2020, 10:00 PM)iFly4rotors Wrote: Maiden Flight, Yes, that one is good as well. I think I am beginning to learn something. I find this hobby so addictive not only because of flying but also the technical part This PID subject is challenging. Posts: 5,866 Threads: 47 Likes Received: 2,779 in 2,241 posts Likes Given: 7,629 Joined: Jul 2019 Reputation: 97 (23-Jul-2020, 06:22 AM)Maiden Flight Wrote: I find this hobby so addictive not only because of flying but also the technical part This PID subject is challenging. Agree. In addition to flying  , there is the technical aspects of physically building  , software configuration, and tuning.  Posts: 53 Threads: 10 Likes Received: 3 in 2 posts Likes Given: 8 Joined: Oct 2020 Reputation: 0 Thanks for this video ! It helped me well  • Posts: 4,731 Threads: 392 Likes Received: 3,231 in 1,827 posts Likes Given: 3,214 Joined: Apr 2019 Reputation: 101 For those just getting into PID tuning, I would also recommend make life way easier on yourself and just focus on the P and D. Default I-term is often sufficient for most cases. And now that just leaves you with permutations from 2 variables instead of 3.
Also, do not dismiss feed forward. Once you have your P and D, feed forward will add that extra bit of responsiveness you couldn't get from P and D alone. I'd argue you feel it as much if not more than P and D. But you need to establish your P and D first before adding feed forward. Posts: 5,866 Threads: 47 Likes Received: 2,779 in 2,241 posts Likes Given: 7,629 Joined: Jul 2019 Reputation: 97 (12-Nov-2020, 05:48 PM)the.ronin Wrote: For those just getting into PID tuning, I would also recommend make life way easier on yourself and just focus on the P and D. Default I-term is often sufficient for most cases. And now that just leaves you with permutations from 2 variables instead of 3.
Also, do not dismiss feed forward. Once you have your P and D, feed forward will add that extra bit of responsiveness you couldn't get from P and D alone. I'd argue you feel it as much if not more than P and D. But you need to establish your P and D first before adding feed forward. Hi ronin, Thank you. I am about ready to put my toe in the water and that sounds like a good way to just get started. You have excellent manuals, which I have downloaded. On the other hand, this advice is a nice little lead in. Thanks Posts: 4,731 Threads: 392 Likes Received: 3,231 in 1,827 posts Likes Given: 3,214 Joined: Apr 2019 Reputation: 101 12-Nov-2020, 06:12 PM (This post was last modified: 12-Nov-2020, 06:13 PM by the.ronin.) Thanks iFly. That latest version of the guide is meant so you can literally follow it step by step like cooking instructions. I have literally used it to tune 5 quads in the last few days that had copied tunes or had not yet been properly tuned. It's meant for people like me that have zero faith in "using the force" and prefer to look at raw data to come to conclusions. |
