Ei303 (alternative interface for x0xHeart)

Alternative interface for the x0x Heart module

The Ei303 is an alternative interface for the x0x Heart developed by jean.pri

The resources are open source on github to make your own.

This is taken from the manual:

Envelope knob **- Envelope modulation, controls the depth of tonal change applied by the envelope to the filter cutoff frequency.
**Decay knob- The decay time of the filter envelope (partially bypassed when accent engaged).
Resonance and Cutoff knobs- Filter cutoff frequency and resonance.
Saw and Square knobs- Sawtooth and square oscillators mix amount. If both pots are turned left, no sounds will be generated by the 303.
When mixing both saw and square, the fundamental will be eliminated and the higher harmonics accentuated because these signals are out of phase.
Drive knob- VCA output volume.
Filter FM knob- Frequency Modulation amount of the filter cutoff, with the VCA audio out. Using filter FM will add more complexity, energy and sometimes anarchy.
Accent Amount knob- Accent amount 0% to 100% (when accent is engaged).
Tuning knob- Oscillators pitch. fine-tuning
Envelope, Decay, Accent amount, and Cutoff CV inputs- A high level signal sets the
control to its maximum value, a 0V signal returns position of the associated pot. (0V to 5V)
Oscillators mix amount CV inputs- (0V to 5V)
Note pitch CV input- (v/octave, 0V to 5V)
Gate input- (0V / 5V)
Accent gate input- (0V / 5V)
Accent ON/OFF switch- (if the accent switch is ON, when using Accent gate input, the logic of this input will be inverted).
Audio input- process external signals (oscillators or any audio source) via the Filter and the VCA. Turn left Saw and Square pots to only hear this audio input processed (you must trig the gate input, as the signal pass into the VCA).
Slide gate input- (0V / 5V)
Slide ON/OFF switch- (if the slide switch is ON, when using Slide gate input, the logic of this input
will be inverted).
VCF audio output- (sound always on).
VCA audio output- (sound gated with gate input).

https://github.com/jeanpri