Hello there,
Since i am new to this forums please bear with me
i have a tricopter which flips every single time when i give throttle mostly i guess it is due to those
brushless motors spinning with different (PWM) values.
i did everything as order, configured all the mandatory setup and all calibration.
i can arm the copter, but as soon as i increase the throttle to a mid level, one of the motor spins vigorously and crashes (every single time).
everything is seems to be working except that the copter cannot take off.
i have attached a videolink below where you can see that after arming if i move the throttle the values that in Servo/motors Radio 1,2,4 are not equally rising. i think this is my problem.
if you think that i need to tune my copter... please i guide me exactly what i should do, i read the post below already, but i am not sure what i should do...
http://diydrones.com/forum/topics/arducopter-tuning-guide
if i am making any rookie mistake please help me, stuck at this for months (2)
these are my setup:
Tricopter Frame: hobbyking x900 tricopter.
Board: Arducopter 2.6v.(powered using APM power module)
Firmware: v3.2.1 tri.
ESC: Emax simonk 25a BEC (2 esc's connected without red wire, one powering tail servo).
Motors: emax 2213-935kv., emax mini servo
GPS and Compass: ublox neo-6m.
Telemetry: 915mhz
i using a 6ch transmitter 2.4ghz
-vivek
Replies
This is almost always because you have your motor connections or rotations wrong. It's possible that ESC calibration could be affecting you but almost certainly not to the degree you say.
Double-check the motor order as compared to the standard diagram. (1,2,3)
Double-check the motor rotation direction.
Make sure you have the correct type of prop on each location.
Make sure your controller/gps/compass is properly oriented.
Re-do accelerometer and compass calibration.
A simple test, with the props removed is to arm the copter and spin it up. As you tilt the copter left and right or forward and back, the motors which are "low" should speed up. If they don't you have something wrong.
If all of that passes, re-do your ESC calibration.
There's one more complication on the tricopter and that's the direction for the tail rotor. If that needs to be reversed, it will violently yaw on lift-off. You can also partially test that with the "props off" test above.
are you sure that there is no problem with the servo/motor out? as described in the video... because what the radio 1 out when i give throttle, the value is to much considering others... also the same motor for radio 1 spins like crazy...
anyway thanks for the response i will try everything once again...
Have you done the ESC calibration step?
Yes scott, btw you meant the throttle esc calibration, right?...
the simple test that you have mentioned is working actually, there's nothing wrong in there...
this is my esc calibration steps...(correct me if i am wrong)
Step1:throttle up and plug in for first time,
Step 2:the next time when you plug it make two beeps at that time lower your throttle, and wait for it to save the paraments.
Step3:third time you are good to go...
i have a doubt... do i have to do this every single time when i start my copter or only once?
also
before setting up my tricopter(for the very first time) i changed the settings inside each of the esc's from its default value, will it cause any problem?
(i have attached the the user manual, just in case if you need to see)
now i do think that there is some problem with escs...(one of the motor is making really loud noise)
is there any method where we reset these esc to its original values?(without throttle method)
also thanks for spending time to resolve my problem it means a lot to me...
-vivek
emax-user-instruction-for-simonk-series-esc.pdf
You only need to do ESC calibration once. I recommend the "all at once" method since it uses the actual output of the APM.
http://copter.ardupilot.com/wiki/initial-setup/esc-motor/
If your motor is making noise, that normally means the bearings are bad and need to be replaced. Don't try to fly until that is fixed.
If you have the programming card for your ESCs, it's normally easy to reset to defaults or just change every setting to that value. Setting more than one or two settings using "stick programming" is error prone.
SOLVED!!!
My bad, motor two was in cw instead of ccw, sorry Scott took your time
i feel really bad for making rookie mistakes...
You really helped me a lot buddy...
-vivek
Great! I'm glad you got it fixed.