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WIP: The MCG - an Arduino-based Eurorack Master Clock Generator with 3 x dividers/multipliers

  • Use David Haillant's Eurorack stripboard
  • There is space on these for 5 pots or jacks.
  • The stripboard is used for the 5 pots; jacks & LEDs panel-mounted and hand-wired.
  • Arduino Nano just about fits on the stripboard.
  • Nano accepts 12v VIN and provides 5v for pots (that means the circuit can be tested when powered by USB - don't connect Eurorack power at the same time though).
  • 6HP panel size

Controls

  • Pot 1: clock speed coarse
  • Pot 2: clock speed fine
  • Pot 3, 4, 5: dividers/multipliers - CCW for divide, noon to duplicate master, CW for multiply.
  • Pushbutton: start/stop
  • Jack 1: master clock
  • Jack 2, 3, 4: divided/multiplied clock
  • LED 1, 2, 3, 4: visual clock indicator (2, 3 & 4 possibly bi-colour: green for mult, red for divide)

Issues and questions

  1. Can the LEDs be "serialised" with the clock pulse?
  2. What is a useful/acceptable range of clock speed?