Neutron Shield Modulator: versatile arduino programmable synth modulator
|The neutron Shield Modulator is an oversized
"shield" for arduino to interface with standard modular synthesizer voltages.|
first test of prototype in synth.
|The old and very complicated prototype:|
|2.0 Prototype boards|
| the new version is a single board (instead of
5)which will be compatible with euro and MOTM/MU panels.
There are 8 LED potentiometers to control the parameters of the chosen program.
There are 4 switches to control program options
The only wiring will be to connect the input and output level and offset potentiometers, and the jacks
there is an 8 way selector switch to select which program you are using. the program number will be displayed by one of the LED pots lighting breifly when the switch is changed.
The new board will fit MOTM, EURO MU(dotcom) and FRAC panels.
with euro and frac, the jacks and analog controls would go to the side.
Much more low profile and also much easier to build. wiring has been reduced almost 10x
(note, the small board at the bottom, is just a "jack board" from something else, normally the jacks will be hard wired)
Front looks pretty much the same except the direct LEDs are added, and USB is no longer on this panel. a daughter panel with USB and MIDI could be created, or you can just run a USB cable out the back of your synth to plug in to a computer if you wish to reprogram often.
(note only 3 direct LEDs on this version, I have managed to squeeze one more out of it)
2x CV 2x Gate/ trig
4 "direct" LEDs 2 are on arduino timer 2 pins 3 and 11 and can be PWM.
Voltage regulation for 5V digital electronics
+-15 or +-9v MOTM or EURO power.
In normal operation you would have 8 "subcodes" which you can select with the 8 way switch.
Depending on how the subcode is written the 8 potentiometers and 4 switches will alter how the subcode works.
for example the "dual ADSR" divides the unit in half, with the 4 pots on each side controlling the normal A, D, S and R amounts, with the 2 associated switches for each side selecting repeat mode on or off, and linear or "capacitor" type response. the 2 Gate/Trigger inputs trigger the respective envelopes, and the CV inputs modify the decay and release times.
Completed and planned Subcodes:
Dual ADSr with linear or capacitor response, gat>trig
Tested Arduinos that work so far:
Chinese duelminove clone.
Schematics PDFs (work in progress)
power supply < not ready
2012 J.Matheson [DeFex,Neutron7]