- Upload the DART_Sketch on a UNO or Leonardo board and start building a MIDI controller.
- The circuit is based on multiplexers (4051), so the 6 analog inputs are multiplied to 48.
- These inputs can be connected to buttons, potentiometers, faders, sensors.
- on/off modifiers (like buttons) and continuous modifiers (like pots or sensors) are automatically reognized so NOTE messages will be controlled by buttons and CC messages are controlled by pots.
- Arduino pins 2 and 3 are connected to the main encoder (super fast and accurate readings).
- MIDI signals are emitted both via DIN connector and via USB.
- Midi over USB funcionality is immediately active on Leonardo boards. It must be enabled on UNO boards.
- Use the Dart PRESET EDITOR to access advanced settings (MIDI, DMX, HID, encoders, touchsensing, spinners setup…)
INPUT / OUTPUT NUMBERING
- The 48 inputs in a Dart circuit are numbered as in the following image.
- IN and OUT pins are coupled by default (example: a button on IN 3 will lit the LED on OUT 3)
- Use the PRESET EDITOR to re-arrange the IN/OUT coupling.
- 74hc595 shift registers are used to manage Dart outputs – commonly used for LEDs
- Dart sketch and circuit is ready to handle 4 shifters .
- The Distance sensor can be disabled or moved to any input pin
- set a modifier to DISTANCE SENSOR MODE (Preset Editor) and use it to store it’s settings.
- The Page Switch can be disabled or moved to any input pin
- set a modifier to PAGE SWITCH MODE (Preset Editor) and use it to store it’s settings.
DMX output & MIDI input
- The phisical MIDI input and the USB-midi input can be used jointly in arduino Leonardo.
- MIDI and USB inputs cannot work at the same time, in arduino UNO.
- this circuit shows a DMX output with galvanic isolation.
Secondary encoder / piezo input
- Pads and 2ndEncoder functions can be de-activated in GENERAL Settings via Preset Editor.
- Just set a modifier to PADS, in the Preset Editor, and follow it’s Hint box.
- id PADS function is active, the last multi-plexer of the chain (Arduino A5 input) is read at higher frequency, so it’s dedicated to Piezo Pads signal conversion.
- A two channel female jack connector is used in DART ONE, to provide Pads input, so a common INSERT Y type jack cable can be used for two pads. Up to four pads can be read.
TOUCHSENSORS 1 and 2
- The DART system supports 2 touch sensors that are not active by default and can be enabled by using the PRESET EDITOR
- For a perfect functioning remember to connect your system to ground – just leave the power supply attached to your laptop.
- T1 and T2 work like buttons, controlling a MIDI on/off message
- many of their functions are strictly related with 1st and 2nd encoder, for DJ jogwheels emulation.