Rotation of CT Scan Data (buggy) @brainwagon

Uploaded August 2009 | Updated September 2026, 5 hours ago

Something is wrong with this program. Along coordinate axes, it computes the right values, but it gets some odd aliasing (probably caused by improper filtering in frequency space) at other angles. I still thought it was neat, and so it now is chewing space on Youtube's servers.

$Arduino, analogWrite, and DC voltages This morning I quickly put together a little RC filter to turn the PWM output of the Arduino into smoothly varying analog voltage to control the VCO in my G0UPL low power beacon transmitter. I think the filter is actually a bit too aggressive, it takes a significant fraction of a second to settle on the new value. Ill get a different cap in there later to speed that up a bit. (Apologies for the soft focus, Ill remember to use the macro next time).$

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