HardLabs

Rythm mini v0.1

northernpaws·catalina·hardware/boards/mini/v0.1/rythm_mini_v0.1.kicad_pcb

Rythm mini v0.1 PCB layout, top view — open source STM32 board by northernpaws

About the Rythm mini v0.1 PCB

Rythm mini v0.1 is an open source STM32 PCB design by northernpaws, published on GitHub under the CERN-OHL-S-2.0 license. It is a 8-layer board measuring 18 × 50 mm, with 71 components from 30 distinct parts.

Its main chip is the STM32H750XBHx, from the STM32 family. Other key parts include the NAU88C22YG, IS42S32160F-6BLI, W25Q128JVP, LTV-217-G and RythmMini. By type, the board carries 35 capacitors, 17 resistors, 7 ICs, 5 inductors, 4 diodes and 1 transistor.

It belongs with the audio and dev boards & breakouts designs in this gallery.

From the project

Embedded Rust hardware and software ecosystem for audio and MIDI processing.

Catalina is an embedded-first Rust ecosystem for building music and audio processing devices, with a primary focus on ARM Cortex MCUs as the end-target.

The ecosystem is comprised of: A Rust crate providing a DSP and audio engine designed for embedded devices (heapless by default, small footprint). Various composable interfaces for quickly prototyping new instruments. Drivers for common audio codecs, SDRAM, etc. Windows, MacOS, and Linux support for developing audio chains before flashing to hardware. Future web interface for synth design, with WebUSB for direct device flashing. Two base…

Rythm mini v0.1, from the project README
From the project README

Main components on the Rythm mini v0.1

NAU88C22YGIS42S32160F-6BLIW25Q128JVPLTV-217-GRythmMiniSTM32H750XBHxSTM32H750IBKx

Rythm mini v0.1 bill of materials (BOM)

71 components, 30 distinct parts.

QtyPartRefs
1
NAU88C22YG
IC1
1
IS42S32160F-6BLI
IC2
1
W25Q128JVP
U1
1
LTV-217-G
U2
1
RythmMini
U3
1
STM32H750XBHx
U4
1
STM32H750IBKx
U7
1
PMV37EN22
Q1
1
Crystal_GND24
Y2
1
Polyfuse
F1
1
POWER
D1
1
STATUS
D2
1
1N4148WS
D3
1
STATUS2
D4
1
120R
FB1
4
1K @100MHz
FB2, FB3, FB4, FB5
15
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +7
1
10uF
C14
6
4.7uF
C16, C17, C18, C19, C28, C29
10
1uF
C20, C21, C22, C23, C24, C25, C26, C27 +2
Show 10 more
QtyPartRefs
1
10nF
C30
2
2.2 uF <100 mΩ ESR
C36, C37
2
4.7k
R1, R2
2
2k2
R3, R4
1
4.7k
R5
4
R
R6, R15, R16, R17
1
220R
R7
1
10Ω 5% 0.25W
R8
1
33Ω 5% 0.5W
R9
5
10k
R10, R11, R12, R13, R14

Rythm mini v0.1 design files

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

Rythm mini v0.1: common questions

What microcontroller does the Rythm mini v0.1 use?

The Rythm mini v0.1 is built around the STM32H750XBHx, from the STM32 family.

How big is the Rythm mini v0.1 PCB?

The Rythm mini v0.1 measures 18 × 50 mm, has 8 copper layers and is 1.6 mm thick.

How many components are on the Rythm mini v0.1?

71 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Rythm mini v0.1 design files?

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

Can I use the Rythm mini v0.1 design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which northernpaws chose for the repository.

Can I test firmware for the Rythm mini v0.1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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