Hey everyone,

So I have building a realacc x210 pro that I bought from bangood, got it all soldered together. Plugged it in the battery to make sure everything was solid, got the correct tones and everything as well as video. I was feeling pretty happy so I disconnected the battery and decided it was time to plug it in to betaflight and get it configured. So I plug the battery back in and plug the usb in, as soon as I did this I got magic smoke.

Now if I plug in the battery I get the deet deet deet sound but no return chime. And when I plug in the usb with no battery pack it doesn't light anything up on the FC. So this leads me to believe the FC is dead. So weird and any insight anyone can give me?

I checked the pdb for any shorts before wiring the FC in, so maybe just a bad wire or something contacted when I put the usb in...

it does sounds like FC is dead... What FC was it?

It was CC3D Revo F4 board. Its a shame I had already flashed betaflight to it before I soldered it in. Not sure exactly what happened to fry the board, I had already powered it up just before with success. All I literally did was disconect the camera and vtx so I had a little more room while I set it up in betaflight before putting everything back together. I was powering the fc from the vcc and ground pads on the pdb, but the reviews of the board said that was fine, should I have powered it from the 5v?

Specs show input voltage of 5~8.4 so yes, you probably fried it. Regardless of specs I only ever supply a FC with 5 volts.

Well that's good to know. I have another one on it's way from the banggood US warehouse so I should have it Monday or Tuesday. I guess I'll caulk this up to a learn experience and make sure to move the wires over to the 5v pads.

nowadays, some FC are accepting the battery directly... however i still stay as a dinosaur and ill provide a stepped down 5v to them.

i find it disturbing to think about such voltage flying around the board - this might impact gyro and other stuff.

and so far i haven't fired any FC by providing 5v to it.. i did with one cc3d while providing 12v

One other question I have is my VTX (eachine tx526) has two ground wires. I ended up just running them both to ground on the pdb, but is there really a reason for the second ground?

The harness is set up:
Power
GND
Video
Audio
GND

I have the audio and video hooked into the camera harness and the power line ran to 12v pad. Pretty sure its fine as the video feed was working when I plugged it in the first time.

So got everything together now, powered up and everything seems solid. I started to configure it in betaflight and updated the firmware through blheli. What I noticed is when I arm the quad only motor 2 spins and motor 3 barely spins. How do I tune this to get them all spinnning together?

Heres a picture of build:



Still gotta figure out what the heck I'm going to do with my turnigy IA6C receiver, maybe mount to the back. Any advice?

(26-Feb-2017, 06:24 PM)Bollucks760 Wrote: One other question I have is my VTX (eachine tx526) has two ground wires. I ended up just running them both to ground on the pdb, but is there really a reason for the second ground?

The harness is set up:
Power
GND
Video
Audio
GND

I have the audio and video hooked into the camera harness and the power line ran to 12v pad. Pretty sure its fine as the video feed was working when I plugged it in the first time.

The second ground is usually to ground your camera if you are powering it from the vtx.

I just connected it to ground I assume it's not going to be problem. So far everything is running good. Changed it to dshot600 and the motor issues went away. I'll post some build pictures tomorrow.