Does anyone know what this means and how to resolve it? “PreArm: Motors: Q_M_SPIN_ARM > Q_M_SPIN_MIN” When reviewing the two parameters, they are set to their defaults and have not been changed,
I can’t get the motors on my 4+1 VTOL to work. I’m using the Orange Cube with Radiomaster TX16S Radio Transmitter and Bandit BR3 Receiver. Even when I manually ARM the system using the button on the Actions Tab on MP or attempt to do a Motor Test, its still a NOGO.
Any ideas?
According to https://ardupilot.org/plane/docs/parameters.html#q-m-spin-arm
Q_M_SPIN_ARM is the point at which the motors start to spin when armed, whereas
Q_M_SPIN_MIN is the point at which the thrust starts.
This is a safety check to prevent the motors from spinning at a speed higher than what is considered safe for arming. To resolve this, you need to adjust these parameters so that Q_M_SPIN_ARM is less than Q_M_SPIN_MIN .
The Q_M_SPIN_MIN should be set to a value that is at least 0.03 higher than the Q_M_SPIN_ARM https://ardupilot.org/copter/docs/set-motor-range.html
For example, if Q_M_SPIN_ARM was set to 0.09, then Q_M_SPIN_MIN should be set to at least 0.12.
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Thanks for your response jax. I’ve seen your recommendation in my search for an answer to my dilemma and it makes absolute sense however I looked into multiple VTOL aircraft from several different types and all of their Q_M_SPIN Parameters seem to be configured the same as mine. Does this help define the problem any better? I will change the Q_M_SPIN_MIN from 0.15 to 0.23 and see what happens. I’m curious why I don’t get this same error on any of my other VTOL aircraft.
Name Value Options
Q_M_SPIN_ARM 0.2 0.00: Low, 0.10: default, 0.2: High
Q_M_SPIN_MAX 0.95 0.90: Low, 0.95: default, 1.0: High
Q_M_SPIN_MIN 0.15 0.00: Low, 0.15: default, 0.25: High
Not sure about the others, but the change should work.