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Severe Tilt (and crash) during flight.

Started this discussion. Last reply by J B Jun 13, 2013. 1 Reply

Today I had the a recurrence of a problem that has happened a few times.After a bit of normal flying mostly in stabilize with a few switches to loiter the craft will suddenly exhibit a tendency to…Continue

Thr IN Spikes

Started this discussion. Last reply by J B Jan 15, 2013. 1 Reply

I'm experiencing short little bursts of throttle in testing. When I do a radio calibration and if I wait long enough the "max" on various channels will quickly spike to a level I can't even generate…Continue

Tags: problem, pulse, throttle


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Please tell us a bit about your UAV interest
It looked like a fun project that combined my love of open source and RC aircraft

J B's Blog

Temperature Changes Can Cause Uncontrolled Roll

Posted on July 20, 2013 at 3:58pm 13 Comments

Short Story:

As this video shows the APM gyro is sensitive to heat changes after it is powered on. Be careful that you allow your APM to acclimate to the flying conditions before powering it up for the first time. This doesn’t seem to take more than 5 minutes but this is only for my specific quad…


Testing Other APM Interference Sources

Posted on July 15, 2013 at 7:49pm 25 Comments

I’ve been curious about what installation conditions I need to worry about when building my APM based quad. We are all very aware of how magnetic interference affects the compass but I was curious how different light sources, magnetic fields and heat affect all of the IMU sensors.…


MuMetal Testing

Posted on July 6, 2013 at 9:30pm 15 Comments

I’ve been trying to clean up magnetic interference from the motors on my quad. When I run compassmot I get any where from 100% to 130%. I ordered some MuMetal and did some testing to figure out how to best use the metal and to see exactly where interference was coming from.

All of the flight electronics were removed and temporarily installed under the…


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