ER-PROTO-01

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ER-PROTO-PANEL-01-SET FRONT REAR-3D-720px.png

Features

  • Eurorack Prototyping card set
  • 6 HP wide (30mm) front panel
  • 3U tall
  • Three card set
    • Board interconnect headers duplicated on headers
    • 30mm wide front panel
    • 28mm wide panel and daughtercards
  • 6 POTS
    • Marked as RV1-RV5
    • Series resistors on pot wiper
    • All 3 pot pins brought to top header
  • 4 Jacks
    • Marked as J1-J4
    • Tip/sleeve brought to header near middle/bottom
  • Pots on top, jacks on bottom of card
    • Easier to adjust pots without bumping into pots
    • Pots more often accessed than jacks
  • Large prototyping area
    • 58 nodes with 3 holes per node (29 per "side")
  • +12V, -12V down board edges
  • 5V/GND down center of card
  • Bussed connections horizontally
  • Front Panel with generic labels
    • Cover with White on Black P-Touch labels

Connectors

  • J1-J4 are front panel connectors

Inter-card Connectors

Pots

  • J5 on the Controls card and J5 on the I/O card
  • Pot connections
    • POTx-1 is fully CW connects to wiper
    • POTx-2 is wiper
    • POTX-3 is fully CCW connects to wiper

RV Conns.PNG

  • To make pot into voltage control
    • POTx-1 (CW) = +5V
    • POTx-13CCW = GND
    • Wire RV1-1 to RV3-1 to RV5-1 on controls card
    • Wire RV1-3 to RV3-3 to RV5-3 on controls card
    • Wire RV2-1 to RV4-1 to RV6-1 on controls card
    • Wire RV2-3 to RV4-3 to RV6-3 on controls card

ER-PROTO-CTLS-6-01 J5.PNG

Jacks

  • J6 on the controls card and J37 on the I/O card

ER-PROTO-CTLS-6-01 J10.PNG

Daughtercard Connectors

J5, J37 - POT connectione

ER-PROTO-DB-01 J5.png

ER-PROTO-DB-01 J37.png

J6 - Eurorack Power

  • J6 on the I/O card
    • Eurorack power
    • 2x5 IDC
    • GATE, CV not connected

ER-PROTO-DB-01 J6.png

J10 - Jacks connections on Controls card

ER-PROTO-DB-01 J10.png

J38 - Jacks connections

ER-PROTO-DB-01 J38.png

Examples

Arduino NANO MOZZI

NANO Pinout

Arduino-nano-pinout-720px.png

Controls

  • 6 Pots
    • RV1 = Analog 7
    • RV2 - Analog 4
    • RV3 - Analog 6
    • RV4 - Analog 3
    • RV5 - Analog 5
    • RV6 - Analog 2
  • 2 CV Input Jacks
    • J1 = Analog 0
    • J2 = Analog 1
  • 1 Output Jack
    • J4 = MOZZI HI DEF Audio

Audio Out Schematic

ER-MOZZI-AUDIO OUT SCHEM.PNG

CV In Schematic

  • ANA0 in example

ER-MOZZI-CV IN SCHEM.PNG

Parts

  • 3D view

ER-MOZZI-PARTS 3D.PNG

  • Top parts view

ER-MOZZI-PARTS DETAILS TOP-3D.PNG

  • Bottom parts view

ER-MOZZI-CV IN FILTER.PNG

  • With NANO

ER-MOZZI-NANO 3D.PNG

  • CAD placement

ER-MOZZI-PARTS CAD.PNG

Wires

NET: ANA0, A1-19, (C7-1, D1-2, D3-1, R9-2)
NET: ANA1, A1-20, (C8-1, D2-2, D4-1, R10-2)
NET: ANA2, A1-21, J37-3
NET: ANA3, A1-22, J37-6
NET: ANA4, A1-23, J37-9
NET: ANA5, A1-24, J37-12
NET: ANA6, A1-25, J37-15
NET: ANA7, A1-26, J37-18
NET: J1-T, J38-1, (R7-1, R9-1)
NET: J2-T, J38-5, (R10-1, R8-1)
NET: J4-T, J38-7, (C10-1, R14-2)
NET: GND1, J37-7
NET: GND2, J38-6
NET: GND3, A1-4
NET: GND4, A1-29
NET: +5VD, A1-27, J37-11
NET: L5V, J37-14, J37-8
NET: LGND, J37-16, J37-4

Parts List

Find Qty Ref Des Part Number
1 2 R7, R8 100K
2 2 R9, R10 10K
3 2 R11, R14 3.9K
4 2 R12, R13 1M
5 4 D1-D4 BAT41
6 8 C1-C8 0.1uF
7 1 C9 4.7nF
8 1 C10 10nF
9 1 J5 HEADER, 2X10
10 1 J6 HEADER, 2X8
11 1 J10 HEADER, 1x8
12 1 A1 Arduino_Nano_v3

Software

CV4 - 4 Control Voltages

  • (4) Buffered Outputs
  • 4 Pots
  • 4 Jacks
  • Voltage Levels are assignable via jumpers
    • +5V/GND
    • +12V/-12V
    • +12V/GND

3D PCB Layout

  • Board soldermask is actually black, but shown in green for contrast

ER-PROTO-01-CV4 3D.png

Schematic

  • Opamp buffers
  • Voltage selection headers

ER-PROTO-01-CV4 Opamps.PNG

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