DHM - Dominus Horologium MIDI

Master Clock for MIDI DIN/USB, CV Sync, and Sync Start for ZOOM LiveTrak L-12/L-20/L-20R, or ZOOM R8/R24.

Breadboard Prototype with 1 CV Sync out, 1 MIDI DIN out, 1 MIDI USB out, and 6.3mm Start/Stop Pulse for the L-12 Control In jack.

Features:
MIDI

• 1x MIDI DIN out.
• 1x USB MIDI out.

CV

• 1x CV(2) Sync (3.5 mm mini TRS jack) out.

  Start/Stop Pulse for Recording gear.

• 1x Control (6.3 mm TS jack) out.

OLED display.

Rotary Encoder

• Adjust BPM 20-300 with +/- 1 increments.
  

Rotary Encoder Push Button (Menu mode)

• Individual PPQN Resolution for CV(2) Sync jack: 0.5, 1, 2, 4, 8, or 12 PPQN.
  

Alt Button

• Adjust Latency Compensation for MIDI start/stop, 0-1000 ms with +/- 5 increments when in Menu mode.

Start/Stop Button

• Send Start/Stop Pulse for the Control In jack on LiveTrak L-12 (or L-20/L-20R,ZOOM R8/R24), and Start/Stop for MIDI DIN/USB, CV Sync.

To do list

HARDWARE

• Add 1x MIDI DIN in/through.
• Add 3x MIDI DIN out.
• Add 1x CV(1) Sync (3.5 mm mini TRS jack) out.
  

FIRMWARE

• Add speed-up for Rotary Encoder.
  • Replace with +/- 1 per step at slow speed and increase when turning faster.
• Create Menu structure for Rotary Encoder Push Button.
  Select option with Rotary Encoder, edit with Alt(Select) Button, change value with Rotary Encoder, and press Alt(Select) Button to save/exit
  • Add individual PPQN Resolution for CV(1) Sync.
  • MIDI through ON/OFF.
• Implement save values to SD.
  • Replace save values to EEPROM.