This is the firmware and design files for a device to convert MIDI data to pulses to drive a Tesla Coil. It enumerates as a USB MIDI device and can be sent live play data or a recorded MIDI file.
The circuit board is based off of the Arduino Due. It uses the similar SAM3A4C MCU, and has a fiber optic output for the big DRSSTC and a BNC port for the small Tesla Coil. It also has isolated physical MIDI in/out ports for connecting other instruments or daisy-chaining more MIDI interrupters. See ucsbieee/ArduinoCore-SAM3A4C for an Arduino IDE board definition.
The device has six voices, which can each produce a single square wave tone at a variable duty cycle. They are ORed together to give a polyphonic effect.
New firmware can be uploaded using the Arduino IDE and the aforementioned board definition, or the latest release (.bin file) can be uploaded using BOSSA (available from Homebrew).
Available from the Arduino IDE library manager
- MIDIUSB
- DueFlashStorage (only if
SAVE_BASE_MIDIis enabled, which it is not by default)
There is also an emulator that can be compiled to run on a normal computer so that songs can be developed without the physical hardware.
- Clean (no effects)
- Effects
- Arpeggio and effects
- Drums
Standard MIDI pitch bend and aftertouch messages apply to all channels.
- Tremolo (rate = 102, depth = 92, delay = 103)
- Vibrato (rate = 76, depth = 77, delay = 78)
- ADSR (116, 117, 118, 119)
- Arpeggio rate (14)
- Kick (36/C2)
- Snare (40/E2)
- Clap (39/D#2)
- Tom (48/C3)
- Closed hi-hat (42/F#2)