CV to MIDI Converter
This
is a general purpose Arduino based platform designed for CV to MIDI conversion
applications (not MIDI to CV !).
The intention is to provide a reasonably flexible platform with open-source software that can be tailored to individual needs and operated without the need for tiny LCD displays and “menu diving”.
The module has:
· 7 front panel controls. All of the controls generate voltages that are processed by the Arduino. Any processing (e.g. attenuverter functions) needs to be done in software.
· A front panel CV input dedicated as 1V/octave:
o Input range: -1.5V to +5.5V (7 octaves)
o Resolution (theoretical): 7mV, 12 cents
· Four general purpose CV inputs on the front panel.
o Input range -5V to +5V
· Two digital inputs: one dedicated as a gate input, the other is uncommitted.
· Two mode selector push buttons with associated LEDs
· One LED indicator (on D13)
· MIDI output (TRS-A)
· MIDI input (universal TRS-A or TRS-B, auto switching)
With the exception of the “1V/OCT” input scaling, all of the inputs and controls are uncommitted to any specific function by the hardware – what they do will depend purely on the software.
The PCB also has a standard PC “waveblaster” connector that can be used to install an optional GM sound module for internal sound generation.
Example software is provided that utilises the Ardiuno MIDI Control Surface Library, but the intention is that users tailor the software to meet their own specific needs. I am happy to do minor configuration changes for builders, and to consider requests for additional functions.
CV to MIDI Build Manual (PDF)
CV to MIDI Software Manual (PDF)
CV-to-MIDI PCB GBP 10.00 (7 in stock)
CV-to-MIDI 10HP panel (black or silver) GBP 23.00 (made to order)
General MIDI
This module is a compact 6HP host for a General MDI sound module using the standard PC "Waveblaster" connector.
The module is specifically designed to use the “DreamBlaster Synth
S2 General MIDI Daughterboard” from Serdaco BVBA. While this
daughterboard is relatively costly, it provides access to a ready soldered and
tested SAM2695 IC* in a very small outline PCB that will fit behind a
6HP Eurorack module.
This Fitzgreyve Eurorack module provides a host for the Waveblaster PCB, and features:
· MIDI input TRS jack (“TRS-B”)
· MIDI Thru TRS jack (“TRS-B”)
· MIDI activity LED
· Left and right stereo outputs
· Volume control, to match audio output with varying programme content to Eurorack levels.
· Mainly through-hole construction (four capacitors and optional components are surface mount) .
* The SAM2695 IC produced by Dream SAS France is a single chip General MIDI implementation. The SAM2695 includes:
· MIDI control processor
· General MIDI wavetable implementation
· MIDI compatible Reverb, Chorus, Spatial effects, 4 band equaliser
· 64 voice (38 voice with effects)
· Stereo DAC DR: 86dB typ THD+N:-75dB typ
The SAM2695 is a 48 pin chip in a 6mmx6mm QFN package with 0.4mm pin spacing – fairly difficulty to solder by hand - hence the approach of using a ready made "waveblaster" module.
The panel is white on black 1.6mm thick FR4 (PCB material).
General MIDI Build document (PDF)
General MIDI PCB GBP 6.00 (8 in stock)
General MIDI 6HP panel (FR4) GBP 8.00 (8 in stock)
MIDI I/O Breakout Panel
Possible uses:
- MIDI input on 5 pin DIN
- MIDI output on 5 pin DIN
- MIDI input on TRS jack (TRS-A or TRS-B)
- MIDI output on TRS jack (TRS-A or TRS-B)
- MIDI input on 5 pin DIN AND on TRS jack (TRS-A or TRS-B)
* Only one connector (DIN OR TRS) can be used at a time
- MIDI output on 5 pin DIN AND on TRS jack (TRS-A or TRS-B)
* Only one connector (DIN OR TRS) can be used at a time
- MIDI TRS-A to TRS-B converter (gender changer)
- Combinations of the above
The panel comes with one 16mm hole blanking plug, and two 6mm hole blanking plugs.
6HP panel Price GBP 6.00 (16 in stock)
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