Discussions

AMP 2.5 (v3.0.1) Best moment to switch to ALT_HOLD

Posted by Gerd Lobmeyer on August 26, 2013 at 4:49am

Hi, if I switch to ALT_HOLD while flying and the copter is not exactly hovering, the ALT_HOLD fails. In this case the copter rise quick. Why is it so important to switch to ALT_HOLD only while the copter is hovering and is this for LOITER the same? I though that if I have trouble while flying around I can switch to a mode like ALT_HOLD or LOITER to get the copter under control again. Or is this not the meaning of the modes?

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25, alt_hold, apm

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Replies

Sam Grob September 15, 2013 at 1:11pm

Gerd, here a link to something very similar to AlphaGel - in Germany too :-)

http://fpv-community.de/showthread.php?21879-Antivibrationsgel-Pads...

I used small blocks 10x5x5 mm below each corner of the APM
dr0n3droid August 30, 2013 at 6:20pm

Parameter: THR_RATE_P is the proportional response and the default is .35. Your copter will vary quite a bit depending on the weight and thrust of your motors. If your copter oscillates up and down in alt hold, lower this value.
dr0n3droid August 26, 2013 at 9:53am

Alt.hold, as well as loiter, have a 'dead zone' mid stick to allow hovering. Between 40-60% throttle. If you enter alt hold/loiter while either above or below this zone, the copter will rise or fall respectively.