ER-PROTO-01

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

• 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

Jacks

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

Daughtercard Connectors

J5, J37 - POT connectione

J6 - Eurorack Power

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

J10 - Jacks connections on Controls card

J38 - Jacks connections

Examples

Arduino NANO MOZZI

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

CV In Schematic

Parts

• 3D view

• Top parts view

• Bottom parts view

• CAD placement

• With NANO

Wires

NET: +5VD, A1-27, J37-11
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, C1-1, J37-3
NET: ANA3, A1-22, C2-1, J37-6
NET: ANA4, A1-23, C3-1, J37-9
NET: ANA5, A1-24, C4-1, J37-12
NET: ANA6, A1-25, C5-1, J37-15
NET: ANA7, A1-26, C6-1, J37-18
NET: J1-T, J10-8, J38-1, R7-1, R9-1
NET: J2-S, J10-1, J10-3, J10-5, J10-7
NET: J2-T, J10-4, J38-5, R10-1, R8-1
NET: J3-T, J10-6, J38-3
NET: J4-T, C10-1, J10-2, J38-7, R14-2
NET: GND, J37-7, J38-6
NET: Net-(J37-Pad4), J37-16, J37-4
NET: Net-(J37-Pad14), J37-14, J37-8

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

Arduino NANO with quad Opamp example