I'm wondering what sort of performance to expect from the "hold" modes... I have tried them and generally am unimpressed at present; I'd like to know if I should try tweaking, or if my expectations are just a bit unrealistic.
Altitude hold - I've tried enabling this mode after sitting for several seconds in a stable hover. Its clear that the mode is operating, but I see swings of up to 2m or more in altitude thereafter. Its not tied to craft motion or control input - even just maintaining position there is lots of altitude variation. For reference the HK board has a MS5611-01BA01 barometer. When sitting dead on a table and watching Barometer output with Multiwiiconf the barometer is very stable, but there does tend to be a "blip" every 10 seconds or so... i'm not sure what units the GUI is displaying, but the value changes from ~1.5 steady to ~4 during the blip, before returning to a steady ~1.5.
GPS hold - I've had worse luck with this one. After enabling, again from several seconds of static hover, the craft will slowly migrate and then eventually flies determinedly in some direction (random? can't tell...). I usually lose my nerve and deactivate the mode when it reaches about 10m away (my flying area is not enormous). MultiWiiConf indicates that the GPS is connected properly and I am achieving a good fix; the LED blinking also indicates 5 or more sats acquired. I haven't tried the GPS home mode yet, that one scares me more
.I'm hoping that some tweaking will improve both of these, yes?
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