I'm in love with that one!
It's a rebirth of the legendary
Resonators from the Korg PS3000 series.
It provides three vactrol controlled
bandpassfilters and a simple triangle
wave LFO. Three LEDs indicate the current
status of each filters frequency.
The Resonator PCB layout is tested and
The three CV inputs utilize switching
jack sockets. The CV2 & 3 inputs are
normalled in parallel to CV1. Any control
voltage applied to CV1 controls all
three Resonators. As soon as as any of
the other CV inputs is used the corresponding
Resonator is controled by this CV only.
The output of the LFO is internally normalled
to all three CV inputs.
The LFO and the LEDs are not part of
the PCB layout yet.
ATTENTION: this is NOT the PCB layout
offered on the electro-music forum!
The PCB on the electro-music forum will
be a professional manufactured double
sided board with soldermask and
silkscreening featuring the LEDs and the LFO as well.
For this event go to:
download the documentation here:
Some pictures of very nice modules others built from the PCB:
Bugbrands fully modded PS3100
CV Section - attenuated CV inputs for each plus master control and LED
(I gotta tweak the LED resistor values maybe - there's still great effects when the LEDs aren't glowing very much... so they're somewhat limited in their display, but good none-the-less)
LFO section - switch for saw / tri / ramp (as suggested in Fonik's PDF) (this is well worth the SPDT c/o switch - the saw and ramp are effectively double the freq of the tri - great!), speed control, positive and inverted outputs, LED speed indicator (driven off positive lfo signal)
Mixer input - two inputs (mixed and kept in-phase) plus feedback channel with +ve or -ve feedback signal
Output mixer - independent levels for dry and wet signals mixed (again, in-phase) to output -- I still don't know whether I prefer this setup to a balance control... a single knob would be good sometimes, but also a little less versatile at others.. swings'n'roundabouts...
Softfins PS3100 far from the north...
With LEDS and LFO, to which he added a rate switch to get 2 different speeds (or three 'cos with the ramp/saw the speed is doubled).
Louis' (casia modular) PS3100 from the netherlands
With LEDS and LFO, built straight forward with that professional beautiful white frontpanel.
With LEDS and LFO, built with LFO speed and shape switch. nice dotcom frontpanel.
That's so cool, isn't it? Silver and blue! Great work by helitron.
He left off the LFO...
One would buy one, no? He does an awesomejob on the design of his DIY modules.