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2 layers99.1 × 47.7 mmExits-1U, the printed circuit board in 3D

4hp DIY eurorack line and headphone output module based on the "Exits" module by Ramphands, 1U format with IJ outs

Size
99.1 × 47.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
70
Nets
42
Pads
215
Tracks, vias
332, 41
Pours
2
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
17 May 2025
Updated
24 May 2025

Overview

Exits-1U is an open-source printed circuit board by benregnier, from the benregnier/Exits-1U repository on GitHub. It is a 2-layer board of 99.1 × 47.7 mm with 70 parts on 42 nets, routed with 332 tracks and 41 vias.

It is built around the LME49720NA, NE5532 and 1N5819HW, with the ADP0204 and SJ-63083A among its other parts. Its parts include 32 resistors, 16 connectors, 14 capacitors, 4 ICs and 2 diodes. It belongs with the audio and music boards of this library.

Main components

5

README

README.md

Exits

exits

4hp DIY eurorack line and headphone output module based on Exits which is in part based on Nearness and Forestcaver headphone amp designs.

The Nearness section is a "minimal panning mixer for the Eurorack modular synthesizer system. Seven inputs, two outputs. The closer an input is to an output, the greater its influence on it."

This design makes the following changes:

  • Changed to a 1U format
  • Reestablishes front panel L and R outputs
  • In lieu of a stereo 1/4 main out, has a six-pin connector that is compatible with Intellijel cases.
  • NE5532 in lieu of NJM4556 for the headphone portion

Schematic and PCBs

The kicad directory contains the schematic and PCB layout as a KiCad 6 project.

Panel

Available in the panel directory as a PDF and an SVG vector file as well as PCB design and gerbers.

Intellijel Output Pinout

This module has a six pin connector on the back meant to be compatible with outputs on Intellijel and Befaco cases. Pinouts match per the diagram below. Outputs are not balanced. Note that if you want to mount this module on the far right hand side of the case both the output and power ribbon cables need to be low-profile.

pinout

License

CC BY-SA 4.0

Parts

70
QtyValueFootprintReferences
12100kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R14, R15, R16, R17, R18, R19, R20, R21, R22, R27, R28
10100nCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C2, C7, C8, C9, C10, C11, C12, C13, C14
9PJ301M12nearness:PJ301M12J1, J2, J3, J4, J5, J6, J7, J13, J15
41Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR23, R24, R25, R26
41kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR29, R30, R31, R32
2102kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR3, R12
2113kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR5, R10
2140kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR7, R8
21M69Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR2, R13
21N5819HWDiode_SMD:D_SOD-123D1, D2
2215kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR6, R9
222pCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC3, C4
222uCapacitor_SMD:C_Elec_5x5.8C5, C6
2442kResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR4, R11
2LME49720Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU3, U4
2NE5532Package_SO:SOIC-8_3.9x4.9mm_P1.27mmIC1, IC2
150k APotentiometer_THT:Potentiometer_Alpha_RD902F-40-00D_Dual_VerticalRV1
1ADP0204Library:ADP0204S1
1Conn_01x04_FemaleConnector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ9
1Conn_01x04_MaleConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ8
1Conn_01x06_FemaleConnector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_VerticalJ10
1Conn_01x06_MaleConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ11
1Conn_02x03_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_VerticalJ16
1Euro power headerConnector_IDC:IDC-Header_2x05_P2.54mm_VerticalJ12
1SJ-63083ALibrary:CUI_SJ-63083AJ14

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Questions

How big is the Exits-1U PCB?

It measures 99.1 × 47.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Exits-1U use?

70 parts, built around the LME49720NA, NE5532, 1N5819HW and ADP0204. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Exits-1U KiCad files?

From the benregnier/Exits-1U repository on GitHub, at the commit this page was made from: the board is Kicad/Exits-1U.kicad_pcb and its schematic Kicad/Exits-1U.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Exits-1U design in my own project?

Its repository states no licence, so its author keeps all rights: ask benregnier before reusing the design.