HardLabs

Multiosc

gusmanb·multiosc·PCB/MultiOsc.kicad_pcb

Multiosc PCB layout, top view — open source STM32 board by gusmanb
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About the Multiosc PCB

Multiosc is an open source STM32 PCB design by gusmanb, published on GitHub under the MIT license. It is a 2-layer board measuring 59 × 75 mm, with 8 components from 4 distinct parts.

Its main chip is the STM32F103_Module, from the STM32 family. By type, the board carries 5 switches and 3 modules.

From the project

MultiOsc, a very simple and cheap clock generator ranging from 7Khz to 200Mhz.

The device is based on the SI5351 clock generator, more concretely using the module sold in AliExpress (for less than 4€) which is very convenient as it already contains all the required external components to get it working immediately.

The device uses a STM32F103 module to control the clock generator and drive a 0.66" I2C screen.

The schematic is extremely simple, the three modules are connected through the I2C bus and five push buttons are used to control de menus, nothing more nothing else :)

Multiosc, from the project README
From the project README

Multiosc bill of materials (BOM)

8 components, 4 distinct parts.

QtyPartRefs
1
OLED_066_Module
M1
1
SI5351_Module
M2
1
STM32F103_Module
M3
5
SW_Push
SW1, SW2, SW3, SW4, SW5

Multiosc design files

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

Multiosc: common questions

What microcontroller does the Multiosc use?

The Multiosc is built around the STM32F103_Module, from the STM32 family.

How big is the Multiosc PCB?

The Multiosc measures 59 × 75 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Multiosc?

8 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the Multiosc design files?

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

Can I use the Multiosc design in my own project?

Yes, under the terms of its MIT license, which gusmanb chose for the repository.

Can I test firmware for the Multiosc 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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