# VOXL2 IO board only spinning 4 of 6 motors

Source: https://forum.modalai.com/topic/1361/voxl2-io-board-only-spinning-4-of-6-motors
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-09-20 21:04:16 UTC by Isaac_j
Replies: 2 · Views: 659

## Isaac_j · 2022-09-20 21:04:16 UTC

Hello all,

I'm having a problem getting the VOXL2 to spin all 6 motors of my hexarotor. I am able to spin 4 motors without a problem, but not all 6. I have, what I believe, everything hooked up correctly. J19 of the VOXL2 pins 9-12 are hooked up to VOXL2 IO J4 pins 1-4, VOXL2 IO is hooked up to the PWM breakout where I have all 6 motors hooked up (I've tried different configurations of connections to verify the motors/ESCs are okay), and I have the Spektrum receiver hooked up and bound to my transmitter. 

I have PX4 firmware 1.4.26beta running onboard the VOXL2 and I it looks like the VOXL 2 IO board is running just fine. I have a solid green LED, 2Hz blinking blue LED, and an OFF orange LED. I have changed the mixer file `quad_x_io.main.mix` (which I had to create as I couldn't find the file) to contain the following: `R: 6x 10000 10000 10000 0`.

I'm unsure if I have the firmware flashed correctly on both the VOXL2 and the VOXL2 IO board; I was looking at [this webpage](https://docs.modalai.com/voxl2-io-firmware/) and I'm a little unsure about the instructions and if this may be what the problem is since I really haven't run many of the commands.
Thanks.

## Reply by modaltb (ModalAI staff) · 2022-09-20 22:05:25 UTC

Hi @Isaac_j ,

Let me check into this.  The file should be at `/usr/lib/rfsa/adsp/quad_x_io.main.mix`, can you verify that it is not there?

The mixer runs on the DSP, and that's a folder that the DSP has access to.

The PWM functionality is available from the voxl-px4 'dev' channel, the file (setup for quad) is here in source as reference:

https://github.com/modalai/px4-firmware/blob/voxl-dev/ROMFS/px4fmu_common/mixers/quad_x_io.main.mix

And get's packaged here in the .deb package:
   https://gitlab.com/voxl-public/voxl-sdk/services/voxl-px4/-/blob/dev/make_package.sh#L130

## Reply by Isaac_j · 2022-09-26 20:33:18 UTC (in reply to modaltb)

@modaltb Thanks!

Finding the correct mixer file solved my problem. 
Thank you!