MultiWii

When I look at the GUI, all my channels are centered around 1500. However, the minimum values I get are around 1200 and the max is around 1800. I can't arm the control board unless I use the trims to lower the throttle and increase the yaw to the right. I am also not able to disarm the board / motors.

I've tried to increase the travel on my radio (Hitec Aurora) to 150%, but that does not have any effect. Is this something that I need to edit in the sketch?

Thanks!

If you can't fix it in the radio.
Modify in Multiwii Tab.

Thanks, I'll try that next. Will that one setting apply to all the channels, or do I need to do that for each?

I just checked and this is what is in the sketch and uploaded to my WMC:

// ******************
// rc functions
// ******************
#define MINCHECK 1100
#define MAXCHECK 1900

When I have the GUI loaded I can only see values between 1200 and 1800.

Try to set 1250 & 1750.
It will apply on all channels.

This worked, and after some experimentation, it seems that the lowest value I can use that still arms the board is 1150.

Now, however, I have another problem. When the board arms, the motors spin up and I can't make them stop unless I disarm the board. No amount of down trim on the throttle has an effect.

If I plug the speed controllers directly into the receiver, it operates normally.

Another issue I have is the one of the motors is making more power than the others. I have recalibrated the ESCs but that does not have any effect. Any ideas? See attached image.

Thanks in advance.

This is normal, you can use the motorstop function to stop the motors at low throttle.

/* motors will not spin when the throttle command is in low position
   this is an alternative method to stop immediately the motors */
#define MOTOR_STOP

That worked, thanks!

Getting closer. It flies ok. Need to tune now.