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Vinyl adc rev c

MadsRudolph·vinyl-adc·hardware/kicad/rev_c/vinyl_adc_rev_c.kicad_pcb

Vinyl adc rev c PCB layout, top view — open source Raspberry Pi board by MadsRudolph

About the Vinyl adc rev c PCB

Vinyl adc rev c is an open source Raspberry Pi PCB design by MadsRudolph, published on GitHub. It is a 4-layer board measuring 170 × 120 mm, with 111 components from 43 distinct parts.

Its main chip is the RASPBERRY PI 4, from the Raspberry Pi family. Other key parts include the 74HC244, LM358, 74HCT132, 74HC4040 and 74HC157. By type, the board carries 45 resistors, 39 capacitors, 17 ICs, 4 connectors, 2 diodes and 1 crystal.

It belongs with the audio designs in this gallery.

From the project

Discrete 3rd-order delta-sigma audio ADC: stacked KiCad PCBs, SPICE simulations, 3D-printable enclosure, and laser-cut acrylic top

The four CNC-milled boards exist because of one number: 0.84 mm between two DIP pads, which nothing could pass on the single-sided mill (see ../PCB-NOTES.md). A fab removes that constraint, and with it the reason to split, so rev C is the reference sheet built as it was drawn -- one board, 170 x 120 mm, four layers, every part through-hole and socketed exactly as before, with the Raspberry Pi 4 plugged into the underside on its own 40-pin header. The measured rev B stack (docs/bringup-log-2026-09.md 13a) is the baseline this board will be compared against.

Main components on the Vinyl adc rev c

74HC244LM35874HCT13274HC404074HC15774HC404974HCU04TL072LM31174HC7474HC04

Vinyl adc rev c bill of materials (BOM)

111 components, 43 distinct parts.

QtyPartRefs
1
74HC244
U1
1
LM358
U2
1
74HCT132
U3
1
74HC4040
U4
1
74HC157
U6
1
74HC4049
U8
1
74HCU04
U9
4
TL072
U20, U22, U60, U62
2
LM311
U21, U61
2
74HC74
U23, U63
2
74HC04
U24, U64
1
6.144MHz
Y1
1
CLK SEL
J1
1
RASPBERRY PI 4
J2
1
LINE IN L
J20
1
LINE IN R
J60
2
47k
RV20, RV60
2
1N5817
D1, D2
1
FB
FB1
1
470u
C1
Show 23 more
QtyPartRefs
23
100n
C2, C3, C7, C8, C9, C10, C11, C13 +15
1
10u
C4
2
220u
C5, C6
2
27p
C16, C17
2
2u2
C20, C60
2
1n5
C21, C61
6
220p
C22, C23, C24, C62, C63, C64
1
4R75
R1
8
10k0
R2, R3, R4, R5, R31, R32, R71, R72
1
1M
R10
1
2k2
R11
2
475R
R12, R13
2
1k00
R20, R60
2
20k5
R21, R61
4
14k7
R22, R23, R62, R63
2
10k5
R24, R64
4
13k0
R25, R26, R65, R66
2
255k
R27, R67
2
5k90
R28, R68
4
8k25
R29, R30, R69, R70
6
22k1
R33, R35, R36, R73, R75, R76
2
165k
R34, R74
2
2k21
R37, R77

Vinyl adc rev c design files

The KiCad project lives in the MadsRudolph/vinyl-adc repository on GitHub; these links point at the commit this page was built from.

Vinyl adc rev c: common questions

What microcontroller does the Vinyl adc rev c use?

The Vinyl adc rev c is built around the RASPBERRY PI 4, from the Raspberry Pi family.

How big is the Vinyl adc rev c PCB?

The Vinyl adc rev c measures 170 × 120 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Vinyl adc rev c?

111 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the Vinyl adc rev c design files?

From the MadsRudolph/vinyl-adc repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Vinyl adc rev c design in my own project?

The repository has no license, so all rights stay with MadsRudolph. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Vinyl adc rev c without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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