ER-MOZZI-DB

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ER-MOZZI-DB-SET FRONT REAR-3D-720PX.png

Features

  • Daughtercard to ER-PROTO-02 card
    • Uses Front Panel and Controls card
      • Controls card populated as required
        • 0-6 Jacks, 0-6 Pots
  • Arduino NANO
  • High Def Sound output
  • Up to 6 Pots connected to A/D inputs
  • Up to 4 input jacks connected to A/D inputs
  • Options
    • 0-4 Pots, 0-4 Input Jacks
    • 5 Pots, 0-3 Input Jacks
    • 6 Pots, 0-2 Input Jacks

Arduino Pins

  • The ER-PROTO-02 controls card has 6 pots (RV1-RV6) and 6 jacks (J1-J6)
  • One jack is a dedicated output (J6) connected to Hi Def output Arduino pins D9, D10
  • The Arduino NANO has 8 Analog Inputs (0-7)
  • RV1-RV3 go to Analog Inputs 0-2
  • 3 Analog Inputs (Analog Inputs 3-5) get shared between 3 pots (RV4-RV6) and 3 jacks (J1-J3)
    • If a jack is inserted, the jack is used and the pot is not connected
    • If a jack is not inserted, the pot is used
  • 2 Jacks (J4-J5) go to Analog Inputs 6-7

A0 - Analog Input 0

  • RV1 wiper, 0-5V
  • Install jumpers on controls card to pull up/down lines to pots

A1 - Analog Input 1

  • RV2 wiper, 0-5V
  • Install jumpers on controls card to pull up/down lines to pots

A2 - Analog Input 2

  • RV3 wiper, 0-5V
  • Install jumpers on controls card to pull up/down lines to pots

A3 - Analog Input 3

  • J1 input Jack, 0-5V if jack is plugged into J1
  • RV4 wiper if no jack is plugged into J1

A4 - Analog Input 4

  • J2 input Jack, 0-5V if jack is plugged into J2
  • RV5 wiper if no jack is plugged into J2
  • Could be used for I2C SDA connection (no pot, no jack)

A5 - Analog Input 5

  • J3 input Jack, 0-5V if jack is plugged into J3
  • RV6 wiper if no jack is plugged into J3
  • Could be used for I2C SCL connection (no pot, no jack)

A6 - Analog Input 6

  • J4 Jack, 0-5V
  • Could be either input or output
    • Parts population option

A7 - Analog Input 7

  • J5 Jack, 0-5V
  • Could be either input or output
    • Parts population option

J10 - Digital 6-13

  • D9, D10 shared with <OZZI Digital

D9, D10 - High Def Audio Out

  • J6 - Stereo 3.5mm jack (PJ-366ST)
  • Same output on both stereo channel

J9 - Eurorack Power

  • Power filter

ER-MOZZI-DB J9.PNG

J10 - Digital I/O

ER-MOZZI-DB J10.PNG

  • Pinout
  1. D0/RX
  2. D1/TX
  3. D6
  4. D7
  5. D8
  6. D9
  7. D10
  8. D11
  9. D12
  10. D13
  11. +5V
  12. GND

Software / Example Projects

HAGIWO builds

Additive VCO

Chord VCO

  • HAGIWO Chord VCO
  • 3 pots (Root Frequency, Harmonics Gain, Harmonics)
  • 3 input jacks (V/Oct, CV Gain, CV Harmonic)
  • 1 PWM output jack
  • CHORD VCO Code

FM VCO

Issues

Rev 1

  • Switch on jacks between RV and J not wired correctly
    • Fixed in Rev 2 schematic
    • Could cut pots and wire manually
    • More easily just don't populate jack or pots that are not needed

Assembly Sheet