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HDD Synth prototype MK3

MaverickUK·HDDSynth·2_prototype_mk3/hardware/HDD Synth prototype MK3.kicad_pcb

HDD Synth prototype MK3 PCB layout, top view — open source RP2040/RP2350 board by MaverickUK
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About the HDD Synth prototype MK3 PCB

HDD Synth prototype MK3 is an open source RP2040/RP2350 PCB design by MaverickUK, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 119.4 × 97.4 mm, with 45 components from 32 distinct parts.

Its main chip is the SC1308, from the RP2040/RP2350 family. Other key parts include the EL357N(C)(TA)-VG, MAX98357AETE+T and SN74HC573APWR. By type, the board carries 13 resistors, 10 capacitors, 4 ICs, 4 diodes, 3 connectors and 2 switches.

It belongs with the audio and retro computing designs in this gallery.

From the project

Recreate the sound of mechanical spinning HDDs on retro PCs that use a solid state drive

Uses mostly surface mounted components for ease of automated assembly and reduction in size and cost

HDD Synth prototype MK3, from the project README
From the project README

Main components on the HDD Synth prototype MK3

EL357N(C)(TA)-VGMAX98357AETE+TSN74HC573APWRSC1308

HDD Synth prototype MK3 bill of materials (BOM)

45 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
EL357N(C)(TA)-VG
Optocoupler_DC_PhotoNPN_AKEC
Everlight
U1
1
MAX98357AETE+T
MAX98357A
Analog Devices
U5
2
SN74HC573APWR
74LS573
Texas Instruments
U6, U7
1
SC1308
RaspberryPi_Pico2
Raspberry Pi
A1
1
MMBT3904LT1G
2N3904
onsemi
Q1
1
DM3D-SF
Micro_SD_Card
Hirose Electric
J1
1
C165948
Conn_01x03
J4
1
Conn_01x03
J5
2
C124375
Conn_01x02
H1, H2
1
C124375
Debug_power_header
H3
1
1984617
Conn_01x02
Phoenix Contact
H6
1
PTS645VL582LFS
SW_Push
SW1
1
PEC12R-2120F-S0012
Bourns
SW2
1
DX-5R5V474U
0.47F
Super_Cap2
2
SS12
onsemi / Taiwan Semi
D3, D5
1
LF05RGB-01
LED_RGBK
Everlight / Kingbright
D4
1
SS14
onsemi / Taiwan Semi
D6
2
BLM21PG221SN1D
FerriteBead_Small
FB1, FB2
2
0603B102K500NT
1nF
C1, C2
2
CL31A106KAHNNNE
10uF
C5, C7
Show 12 more
QtyPartRefs
5
CL10B104KO8NNNC
0.1uF
C6, C8, C9, C10, C12
1
CL31B225KCHNNNE
2.2uF
C11
1
RC0603FR-071KL
1K
R1
1
RC0603FR-072KL
2K
R2
1
RC1206FR-0733RL
33R
R3
2
RC0603FR-0710KL
10K
R4, R17
2
RC0603FR-07330RL
330R
R5, R6
1
RC0603FR-073K3L
3.3K
R7
2
RC0603FR-0710RL
10R
R15, R16
1
RC0603FR-072K2L
2.2K
R18
1
YC164-JR-07330RL
330R
RN1
1
YC164-JR-0747KL
47K
RN2

HDD Synth prototype MK3 design files

The KiCad project lives in the MaverickUK/HDDSynth repository on GitHub; these links point at the commit this page was built from.

HDD Synth prototype MK3: common questions

What microcontroller does the HDD Synth prototype MK3 use?

The HDD Synth prototype MK3 is built around the SC1308, from the RP2040/RP2350 family.

How big is the HDD Synth prototype MK3 PCB?

The HDD Synth prototype MK3 measures 119.4 × 97.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the HDD Synth prototype MK3?

45 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the HDD Synth prototype MK3 design files?

From the MaverickUK/HDDSynth repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the HDD Synth prototype MK3 design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the HDD Synth prototype MK3 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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