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This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies. |
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Discussion
How much does it weigh?
For the morbidly fascinated, we have weighed the 4 legged monster and some parts of the autopilot. All autopilot components must come in below 160g to keep the Mega 16/15/4 from overheating.
Latest revelations with the autopilot show it can't fly on accelerometers alone. Accelerometers show 0 acceleration in a tilt because the copter always makes enough horizontal movement to keep accelerating directly opposite the rotor force. Accelerometers show horizontal acceleration once the tilt is complete, from horizontal translation. It needs the gyros to determine the tilt and accelerometers to determine translation. When 0 translation is observed, the gyros are reset to 0 tilt. Unfortunately the accelerometers drift, so 0 observed translation eventually becomes significant translation. GPS is the final link which resets the accelerometers to 0 translation. So it's GPS resetting accelerometers and accelerometers resetting gyros. All this requires the copter to stop periodically to reset its IMU of course. The trick with GPS seems to be using it to determine relative position instead of absolute position but there's nothing on the internet about comparing a current reading with previous readings from the same unit. ImagesView all Images in thread
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