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Mar 11, 2014, 03:17 AM
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Lidar day 4



1 of the sensors failed. Tried focusing it, but it wouldn't detect farther than 1m.


It doesn't have any focusing threads. It just slides in & out.


Tried bridging all the 3.3V regulators to cool off the board. It was melting off the standoffs from only 0.2A.




After a full day of replacing the sensor, the complete stack briefly flew manually. It takes nearly full power. IMU drift is too high to fly more than a minute. Lidar won't work below a certain altitude, because any banking makes it bounce off the floor. 2 PWM pins were swapped.

The only way for the coordinates to work was to assume it was always pointing north. The calibration has to face the direction it's going to point when flying. Rotating the lidar output to point in any arbitrary direction caused massive glitches, every time it slightly rotated.
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Old Mar 12, 2014, 03:54 PM
randallmr
A moderator felt this post violated the following rule: Trolling (Provocation).
Old Mar 12, 2014, 04:01 PM
randallmr
A moderator felt this post violated the following rule: Trolling (Widespread).


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