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Johan Berglund ee438c200d * Adjustment setting for thumb lever (for optimizing thumb portamento control). By setting THR (level of push force to activate) and MAX (level of push force to achieve maximum set portamento) values close to eachother at the desired point of activation, the new glide limit setting to desired rate will create a switching type set rate controller (similar to Crumar EVI glide key). With THR and MAX setup with separation to taste, a continous control up to level set by glide limit is achieved. 
* Glide setting SWO, SWitching Only, sending only Glide on/off (CC#65) for use with synths where glide rate CC#5 is used in non standard ways, for example some DSI/Sequential synths like the Prophet REV2 or Prophet 12 where glide rates are set individually for each oscillator.

* Glide limit setting for portamento. Doubles as setting for portamento level sent using pinky key/mod key in GLD mode. (Can be changed both in menu and in GLD mode.)

* Setting of level for LVL, LVP and GLD now reqires touching both pinky/mod and third trill/RHp3 for setting mode activation, this to avoid accidental change of setting when pinky/mod key is touched.

* Rate of setting movement up and down for LVL, LVP and GLD has been adjusted. Became very much too fast after the timing issues were solved in 1.5b1

* A short delay before note offs in legato transitions is added to make playback of recorded midi behave correctly (keeping note on and note off from being registered on the same timestamp).
2020-08-19 23:07:38 +02:00
hardware Added hex files, user guides and fingering charts. 2020-03-24 14:00:44 +01:00
NuEVI * Adjustment setting for thumb lever (for optimizing thumb portamento control). By setting THR (level of push force to activate) and MAX (level of push force to achieve maximum set portamento) values close to eachother at the desired point of activation, the new glide limit setting to desired rate will create a switching type set rate controller (similar to Crumar EVI glide key). With THR and MAX setup with separation to taste, a continous control up to level set by glide limit is achieved. 2020-08-19 23:07:38 +02:00
NuEVI-audio Add NuEVI version with audio output (from Johan) 2019-03-04 10:21:21 +01:00
simulation Make IntervalTimer stub so simulator works 2019-10-16 15:28:01 +02:00
TestMPR121 Test tool for MPR121 modules. 2019-12-23 00:41:15 +01:00
uploadable hex files * Adjustment setting for thumb lever (for optimizing thumb portamento control). By setting THR (level of push force to activate) and MAX (level of push force to achieve maximum set portamento) values close to eachother at the desired point of activation, the new glide limit setting to desired rate will create a switching type set rate controller (similar to Crumar EVI glide key). With THR and MAX setup with separation to taste, a continous control up to level set by glide limit is achieved. 2020-08-19 23:07:38 +02:00
user guides NuEVI and NuRAD: Timing and speed issue solved - SSD1306 display library needed editing to prevent it from lowering I2C bus speed. Added setting to enable/disable the on the fly key switching. NuRAD: Changed touch sensor reading equalisation from offset to multiplier to improve coherence of readings. 2020-07-22 13:24:56 +02:00
.gitignore Handle sub menus in a generic way and moved adjust menu logic to separate file 2019-06-23 17:14:17 +02:00
.gitmodules Let imgui submodule be untracked without whining 2019-06-23 15:58:54 +02:00
LICENSE.md First commit. Arduino sketch plus devboard plans. 2017-08-08 14:46:29 +02:00
README.md Updated readme with instructions for editing display library. 2020-07-22 14:06:01 +02:00

README.md

NuEVI

A project by wind controller enthusiasts wanting to save the endangered Electronic Valve Instrument.

Follow the project at https://hackaday.io/project/25756-diy-evi-style-windcontroller

Building NuEVI

NuEVI is easiest to build using the Arduino IDE. You will also need to download and install Teensyduino to build for and upload to the Teensy.

Libraries

A few libraries need to be added that are not part of the default Arduino install. These can be added directly via the Library Manager in the Arduino IDE:

  • Adafruit MPR121
  • Adafruit GFX
  • Adafruit SSD1306 (version 1.2.9 or above)
  • NuEVI also includes on the Filters library by Jonathan Driscoll, but that is no longer an external dependency.

For the SSD1306 library, the Adafruit_SSD1306.h file needs to be edited to prevent it from lowering the I2C speed.

Change this: Adafruit_SSD1306(uint8_t w, uint8_t h, TwoWire *twi=&Wire, int8_t rst_pin=-1, uint32_t clkDuring=400000UL, uint32_t clkAfter=100000UL);

To this: Adafruit_SSD1306(uint8_t w, uint8_t h, TwoWire *twi=&Wire, int8_t rst_pin=-1, uint32_t clkDuring=1000000UL, uint32_t clkAfter=1000000UL);

Compile options

Open NuEVI.ino in the Arduino IDE. Under "Tools -> Board", select "Teensy 3.2 / 3.1". Then set "Tools -> USB Type" to "MIDI".

Building and uploading

Connect the NuEVI via USB to your computer, open the Teensy application and make sure the "Auto" option is selected (the green round icon). In Arduino IDE, select "Sketch -> Verify/Compile" and once that is complete press the reset button on the Teensy chip (you have to remove the top cover on the NuEVI to access this). Upon resetting, it should upload the new firmware onto the NuEVI.

After uploading new firmware, you may need to reset the config memory of the NuEVI. To do this, press and hold the MENU and ENTER buttons while turning on the NuEVI. Note that this resets all sensor calibrations too. For new versions this should not be neccessary, as value and version checks are in place.