Hello everyone,

I finally finished up my 250 quad build. Set up all the parameters ,escs, motors in cleanflight and everything seemed to be good.

During my first test flight i noticed that the quad would pull to the left when i increased the throttle. I managed to get it a few inches of the ground and it began pulling quite a bit again so i had to bring it down.

Any idea why this is happening? Do i need to change some trims?

Thanks!

Ishan

Hi Ishank
If you can share a video that would really help.
However some basic checks you can perform
1. Accelerometer Calibration
2. Motors Tuning in right direction
3. Props correctly placed.
4. Trims on TX should be 0
5. Calibrate the ESC

Try these. I would leave the rest to experts if they have any findings.

Check whether the weight is not on one side. The centre of mass should be at the centre. And as said by Bhavesh, you should check all that. Most important is accelerometer calibration. And also the propellers mounting. Balance the propellers. First do this and still the problems occurs then there is problem in mounting motors and all or in flight controller itself.

Hello Inventor and Bhavesh, thanks for the replies!

I had to trim some controls on the TX and calibrate the escs and now it seems to be flying fine.

I had one more question. Im using a FS IA6 PWM reciever, what should my serial receiver provider be on cleanflight?

Quote from: IshanK on August 05, 2016, 06:55:20 PM
Hello Inventor and Bhavesh, thanks for the replies!

I had to trim some controls on the TX and calibrate the escs and now it seems to be flying fine.

I had one more question. Im using a FS IA6 PWM reciever, what should my serial receiver provider be on cleanflight?

Read the information given in the note. You have to select RX_PARALLEL_PWM cause your flight controller needs PWM input. Some advanced flight controllers like Pixhawk needs PPM input (Pulse position modulation, which needs only one cable for all channels) so there you will have to do PPM, but now PWM is for you. MSP and serial are so rarely used and need serial bus to send signals and almost not in used in multirotors flight controllers. And the options at the bottom are only for serial output and not for the PWM that u needed so don't do anything there. Hope this helps...

This seems like an Accelerometer calibration issue or the FC is just for fixed properly and is probably tilted in a way. Also check the mode you are flying in, if it is not stabilised mode, you will face this issue.