Hi all-
This is my first foray into, well building anything (besides dorm room shelves)... I've got my copter all assembled, but am having a really hard time getting it to take off. I've checked out the troubleshooting page, and re-calibrated my ESCs multiple times, the copter still won't take off, just flips over right away.
I'm using a Q-brain (I fried the PDB when soldering), and from what it sounds like, it sounds like an ESC problem. I just can't figure out how to fix it.. The motors don't appear to beep in the correct sequence when plugged into 4-way hub, so I took out each signal wire and individually swapped them out to calibrate them all via the powered, S3 servo cable.
I am using a Frsky receiver with a Turnigy 9X. I've read that both channel 1 and 3 are the correct places to plug the Q-brain servo cables into. Another weird thing that is happening that may or may not be related- the motors do not start to spin until I reach 50% on my throttle.
Any help would a greatly appreciated! It's incredible frustrating to have stumbled through everything else and made it this far and get hung up as soon as the props actually start spinning.
Here's a video that may be able to explain things clearer.
Thanks so much in advance!!!
Replies
Use trim option in the radio controller and trim it in the opposite direction of its motion...for example: if its flips forward then trim in the backward direction...this way you can adjust he controller and have a flight...and for not starting of the propeller you sud have full throttle pass! What are u using as a flight controller???
Don't trim the radio.
Setup your flight controller properly and allow it to manage individual channel throttles.
What do you mean by full throttle pass? It seems that the zero value has somehow been set to 50% on the TX, as the copter will only start to take off at full throttle. Is this more likely a TX setting or Mission Planner?
I'm using a Pixhawk.
Thanks so much!
It doesn't look like you've done a good ESC calibration.. Are you using an APM, have you done this?: https://www.youtube.com/watch?v=gYoknRObfOg
All the motors should spin up at the same time with throttle.
Thanks, I'll try that. I'm using a Pixhawk