With the very latest (today) firmware on board my 3DR quad flys and loiters fine. But the props all spin slowly as soon as the APM is enabled. I tried adjusting the throttle min parameter but that makes no difference. I have calibrated the ESCs successfully.
What parm needs adjusted to keep the props from starting to turn on enable?
[quote=“jjwhite”]With the very latest (today) firmware on board my 3DR quad flys and loiters fine. But the props all spin slowly as soon as the APM is enabled. I tried adjusting the throttle min parameter but that makes no difference. I have calibrated the ESCs successfully.
What parm needs adjusted to keep the props from starting to turn on enable?[/quote]
MOT_SPIN_ARMED. I very strongly recommend keeping it - it is designed to prevent dangerous situations.
Thanks for the response. I found the parm in the Standard list late last night. And I understand your point regarding safety.
Next issue is the sonar is not working. The right unit is selected as enabled and I verified that in the full parm list. But the sonar voltage and sonar distance are both zero all the time. Is there another place it has to be enabled, or a selection for what pins on the APM is is plugged in to? This one worked fine for a year on previous version of the firmware.