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4 layers61 × 76.2 mmProfane geometry, the printed circuit board in 3D

Digitally controlled triangle-core VCO with 4 individual waveshapes, plus one mix output with per-wave attenuation

Size
61 × 76.2 mm
Copper layers
4
Thickness
1.6 mm
Parts
148
Nets
124
Pads
465
Tracks, vias
1,377, 176
Pours
6
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
21 May 2021
Updated
1 Dec 2021

Overview

Profane geometry is an open-source printed circuit board by hearthsinger, from the hearthsinger/profane-geometry repository on GitHub. It is a 4-layer board of 61 × 76.2 mm with 148 parts on 124 nets, routed with 1,377 tracks and 176 vias.

It is built around the MCP4728-E/UN, TL072 and AP2112K-3.3, with the LM1117-5.0 and MMBF4416A among its other parts. Its parts include 71 resistors, 36 capacitors, 11 ICs, 5 diodes and 4 connectors. It belongs with the SAM D and SAM boards of this library.

Main components

5

README

README.md

Profane Geometry

I'm making (attempting) a Eurorack Module.

What is it?

It's gonna be an oscillator builder/mixer based on a digitally-controlled Triangle Core VCO I found in a research paper. It will be controlled by the atsamd21 or atsamd11 (depending on what I end up needing and what is in stock) family of MCUs and have firmware written in Rust!

Dang aren't you like a web developer?

Yes. I've only barely figured out the building blocks of some of this stuff, and my knowledge extends to pretty much exactly what I've built so far. There are almost certainly issues with it. The OSHW community is great though and people who publish the source/schematics for their Eurorack modules have been a massive, massive help.

Dang isn't there like a global parts shortage.

Yes. It's annoying.

Dang can I make one of these?

Sure. Probably it will be bad.

What's in this repo?

  • The ./profane_geometry directory houses the KiCad project for the oscillator board
  • The ./profane_geometry_jackboard directory houses the KiCad project for the jackboard
  • The ./firmare directory contains some testing firmare designed for the first iteration of the jackboard, which allows for an Adafruit Feather M0 to be attached with breadboard-pitch pin sockets

Parts

148
QtyValueFootprintReferences
2310kResistor_SMD:R_0805_2012MetricR2, R3, R4, R5, R11, R16, R17, R20, R25, R31, R34, R35, R39, R40, R45, R47 +7
200.1uFCapacitor_SMD:C_0805_2012MetricC3, C12, C13, C14, C15, C16, C17, C22, C23, C24, C25, C26, C27, C30, C31, C33 +4
61kResistor_SMD:R_0805_2012MetricR8, R12, R18, R29, R32, R61
647kResistor_SMD:R_0805_2012MetricR22, R26, R37, R42, R49, R54
522kResistor_SMD:R_0805_2012MetricR27, R41, R46, R53, R58
530.1kResistor_SMD:R_0805_2012MetricR30, R38, R44, R50, R56
5TL074Package_SO:SSOP-14_5.3x6.2mm_P0.65mmU3, U4, U5, U6, U7
41N5819Diode_SMD:D_SOD-123D2, D3, D4, D5
41uFCapacitor_SMD:C_0805_2012MetricC4, C6, C9, C32
42.2MResistor_SMD:R_0805_2012MetricR36, R43, R48, R55
44.7kResistor_SMD:R_0805_2012MetricR68, R69, R70, R71
447pFCapacitor_SMD:C_0805_2012MetricC18, C19, C20, C21
3100kResistor_SMD:R_0805_2012MetricR33, R62, R65
3240kResistor_SMD:R_0805_2012MetricR24, R63, R66
3FBInductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolderFB1, FB2, FB3
22.2nFCapacitor_SMD:C_0805_2012MetricC8, C29
247uFCapacitor_SMD:CP_Elec_6.3x5.7C1, C2
2Conn_02x08_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_VerticalJ1, J2
1169kResistor_SMD:R_0805_2012MetricR21
11MResistor_SMD:R_0805_2012MetricR10
12.87kResistor_SMD:R_0805_2012MetricR14
122pFCapacitor_SMD:C_0805_2012MetricC10
13.57kResistor_SMD:R_0805_2012MetricR19
1330RResistor_SMD:R_0805_2012MetricR1
14.12kResistor_SMD:R_0805_2012MetricR15
14.7nFCapacitor_SMD:C_0805_2012MetricC28
14.7uFCapacitor_SMD:C_0805_2012MetricC11
147nFCapacitor_SMD:C_0805_2012MetricC7
149.9kResistor_SMD:R_0805_2012MetricR23
15.6kResistor_SMD:R_0805_2012MetricR6
156kResistor_SMD:R_0805_2012MetricR67
164.9kResistor_SMD:R_0805_2012MetricR64
17.15kResistor_SMD:R_0805_2012MetricR13
18.25kResistor_SMD:R_0805_2012MetricR28
1AP2112K-3.3Package_TO_SOT_SMD:SOT-23-5U2
1ATSAMD21G18A-AUTPackage_QFP:TQFP-48_7x7mm_P0.5mmU11
1D_SCLTestPoint:TestPoint_Pad_D1.0mmTP13
1D_SDATestPoint:TestPoint_Pad_D1.0mmTP12
1GND_Net_TieNetTie:NetTie-2_SMD_Pad0.5mmNT1
1LM1117-5Package_TO_SOT_SMD:SOT-223-3_TabPin2U1
1L_SCLTestPoint:TestPoint_Pad_D1.0mmTP15
1L_SDATestPoint:TestPoint_Pad_D1.0mmTP14
1MCP4728Package_SO:MSOP-10_3x3mm_P0.5mmU10
1MCP6002-xSNPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU9
1MMBF4416APackage_TO_SOT_SMD:SOT-23Q1
1NSLTestPoint:TestPoint_Pad_D1.0mmTP11
1NotchTestPoint:TestPoint_Pad_D1.0mmTP4
1POTTestPoint:TestPoint_Pad_D1.0mmTP7
1PSLTestPoint:TestPoint_Pad_D1.0mmTP10
1PWMTestPoint:TestPoint_Pad_D1.0mmTP6
1PWRzzzzzzzz:SunLED-Rev-2-PLCC-SeeThruD1
1PulseTestPoint:TestPoint_Pad_D1.0mmTP3
1RESET_SWzzzzzzzz:SPST_TL3365AF180QG_SMDSW1
1SSLTestPoint:TestPoint_Pad_D1.0mmTP9
1SquareTestPoint:TestPoint_Pad_D1.0mmTP2
1TL072Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU8
1TSLTestPoint:TestPoint_Pad_D1.0mmTP8
1TagConect SWDConnector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_VerticalJ4
1TriTestPoint:TestPoint_Pad_D1.0mmTP1
1USB_B_MicroConnector_USB:USB_Micro-B_Amphenol_10103594-0001LF_HorizontalJ3
1V/OCTTestPoint:TestPoint_Pad_D1.0mmTP5

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Questions

How big is the Profane geometry PCB?

It measures 61 × 76.2 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Profane geometry use?

148 parts, built around the MCP4728-E/UN, TL072, AP2112K-3.3 and LM1117-5.0. 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 Profane geometry KiCad files?

From the hearthsinger/profane-geometry repository on GitHub, at the commit this page was made from: the board is profane_geometry/profane_geometry.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Profane geometry design in my own project?

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