Tonight I finished my first psycho LFO. I made a few
modifications:
1)put a 1 meg pot on every oscillator, copying the circuit for the
lowest one on the schematic. This provides a great deal of
variety.
2)I found the 1meg pot/2.2uF to provide too much slew, so I
changed the cap to .22 uF.
3)Added an LED, plus an LED driver that's probably overkill.
(That's what I get for hanging out on the MOTM mailing list.)
Schemo is here:
http://www.hotrodmotm.com/images/MOTM-800_mod.gif
I'm very happy with the module. It's a very interesting modulation
source. Driving a VCO with the portamento turned up a bit and
the oscillators going at different frequencies I get really cool
pseudo arabic folk melodies. Hours of fun!
modifications:
1)put a 1 meg pot on every oscillator, copying the circuit for the
lowest one on the schematic. This provides a great deal of
variety.
2)I found the 1meg pot/2.2uF to provide too much slew, so I
changed the cap to .22 uF.
3)Added an LED, plus an LED driver that's probably overkill.
(That's what I get for hanging out on the MOTM mailing list.)
Schemo is here:
http://www.hotrodmotm.com/images/MOTM-800_mod.gif
I'm very happy with the module. It's a very interesting modulation
source. Driving a VCO with the portamento turned up a bit and
the oscillators going at different frequencies I get really cool
pseudo arabic folk melodies. Hours of fun!