Playing with the QRSS oscillator @brainwagon

Uploaded February 2011 | Updated September 2026, 1 day ago

Listening to it on my FT 817...

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

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Playing with the QRSS oscillator