Hi
I had a bad crash after I switched my Rc controll off! This was a mistake of mine.
What happend was that the quadrocopter stopped all the motors and so it dropped from 20m height.
why does it switch off the motors? A very slow decrease (rough landing) would be much better.
Is there a reason for it?
with best regards
Franz
Replies
Is it not an idea, that if Tx sygnal is lost, the plane just reverse direction and switch to the RTL program until it gets the sygnal again? If brake keeps continuus, the RTL just bring the copter to home and land using the sonar, And that should be defalut feature for APM not for Tx/Rx. I know- sound simple, but... young people can everithing now :)
Yeah, It's a crap shoot for most radios. You never know what they will do. The CLI radio test is good to find the default behavior.
Jason
For the people here to answer that question, they might need some details.
Which RC TX/RX do you have? Many programmable RC TX/RX units have default "failsafe" settings.
Do you have anything plugged into the APM on receiver/input channel 8?
Did you setup any failsafe settings on the APM.
Normally what happens when the TX is turned off, is the RX reverts to a programmed set of default PWM values. So the APM usually does not know that the TX is off at all, because it is getting valid signals from the RX. If, however, those default settings include ch 3 to 900 pwm, then the APM will say "oh, ok, turn the throttle down?" and the motors go off.
Then the user, at this time, normally watches his copter crash, and posts on the forum asking why the APM failsafe turns off the motors... and afterwards he finds out that his TX/RX has its own failsafe settings, and that the defaults are not very good for a quadcopter..... ;) that is usually what happens, but I don't know what happened to yours. Maybe with some more details we will know.