Hello there,
I am excited to announced that i've build my first ArduCopter. But i am twice much upset to let you know that it needs a Doctor. :) LOL
Successfully, i updated the APM2 with the ArduCopter 2.7. However, i am have lot of issues with the quad. I know that Quad is not gonna be as still as the log,(for now) of course. But It seems like Quad wants to just flip over. When i give throttle (Around 1/3) and let go my hand, it slowly increases the throttle by itself and tries to tilt forward. Sometime it also tried to spin to the left. I am not sure if i have to adjust the Yaw PID or something.
I checked couple of times, but I couldn't see any loose connection. Motors are fit tightly to the arms. Battery has juice. I am not sure whats wrong with the quad.
I have attached the Parameter file to this post. I am not sure how to get the log file. If it necessary to troubleshoot this issue. Please let me know how and from where i can get the log file. I will be happy to provide all the necessary information. Thank you in Adv.
Quad Specs:
X Setup
APM2 with ArduCopter 2.7
HackerStyle Outrunner 20-22L Motors
Turnigy TY-P1 25Amp HEXFET Brushless ESCs
FlightMax 4000mAh 20C 3Cell 11.1V Battery
G450 Integrated PCB frame
Replies
I have attached a zip file which contains all logs files. Hope these files help to search out if there is some bugs in the code (ArduCopter Software) or something else.
I am still trying to make modifications to the quad. I am trying to move all the wire as far as i can so that their magnetic field won't interfere with the APM.
Logs Files.rar
Hi everyone,
Sorry i took little longer to reply. I wanted to reply with the video link so everyone can see the improvement by tweaking around the Rate Roll P value (By default Rate Roll P & Rate Pitch P values are locked. So if you change Roll P value, Pitch P value changes by automatically. Rate Roll P = Rate Pitch P). And believe it or not i am pretty happy with the results (But still there are few minor problems). :)
Here is the link: Video
Few quick questions.
1). Why do all my motors heat up so quickly? As you can see in the video i hardly flew for two mins but during that time all motors got very hot. I am not sure why. Does anyone have the same issue with their motors(Specially, hackerStyle 20-22L)? I would like your suggestions to keep them cool.
2). Why my quad always go straight (Forward direction) when i take off? As soon as i give little throttle it just takes off and goes in the forward direction. Is there any parameter i have to change?
Thank you so much for all your help.
Cheers,
Kur
@Vernon, You mentioned about the in-flight tuning with CH6. If you don't mind, Would you please tell me how do i do that?
{Again, i am using Spektrum DX7 with AR7000. I have connected 6 channels to the APM2. But i am not using Channel 5 and Channel 6. Channel #5 is labeled as Gear on the RX and Channel #6 as AUX1).
@Randy. Yes, i have calibrated my ESCs couple of times now. But i will re-calibrate them tomorrow (shouldn't hurt).
Sorry, but I am little confused here. I am not sure what do you mean, when you say reduce your pitch rate values!? I mean i know where can i find pitch rate values. I am just not sure which one should i reduce. P value, I value, D value or IMAX value? It would be good if you can tell me particular values. I am going to attach a screenshot of all my ArduCopter Config below.
@Vernon. I am using HackerStyle 20-22L with 10*4.5 props and flightmax 4000mAh 20C 3Cell 11.1V battery.
Thank you so much for that link. I have to read the whole wiki really carefully. Its very informative. As you mentioned that, the default value for the Rate Roll P is 0.14. And it should be reduced if you are using bigger rpm motor or bigger prop or both. Currently on my quad, the default value for the rate roll P is 0.18. I think, that's one of the issue. Since i am using higher rpm motor (924rpm). The value of Rate roll P should be lower than 0.14 (Standard for 850rpm motor)?
And also i wanna ask about the IMAX throttle rate. Currently, i have it as 180. Does it look good or kinda high? Please let me know. Thank you so much for your help.
After re-calibrating and setting up the mag. dec. I gave it a shot and tested it out.
Here is the video: https://www.youtube.com/watch?v=VhCOb7mFZos
Yes, i am in stabilize mode. I am not sure in which mode my ESCs are. And they didn't come with any kind of instruction or manual. I have to find out the default start mode of these ESCS.