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Usb c otter

lucysrausch·usb-c-otter

Usb c otter PCB layout, top view — open source STM32 board by lucysrausch

About the Usb c otter PCB

Usb c otter is an open source STM32 PCB design by lucysrausch, published on GitHub under the CERN-OHL-1.2 license. It is a 4-layer board measuring 42.4 × 16 mm, with 43 components from 26 distinct parts.

Its main chip is the STM32F072C8Ux, from the STM32 family. Other key parts include the FUSB302BMPX, AP2204R-3.3, USBLC6-2SC6 and Si8540. By type, the board carries 17 resistors, 12 capacitors, 5 ICs, 3 connectors, 3 diodes and 2 transistors.

It belongs with the displays & leds and power & battery designs in this gallery.

From the project

USB PD trigger with XT60 out and WS2812 / APA102 LED pads.

PCB based on the PD Buddy Sink by Clara Hobbs.

PD Buddy Sink is Copyright (C) 2017 Clayton G. Hobbs, and made available under the CERN Open Hardware Licence v1.2. See LICENSE for more information.

Main components on the Usb c otter

FUSB302BMPXSTM32F072C8UxAP2204R-3.3USBLC6-2SC6Si8540

Usb c otter bill of materials (BOM)

43 components, 26 distinct parts.

QtyPartRefs
1
FUSB302BMPX
U1
1
STM32F072C8Ux
U2
1
AP2204R-3.3
U3
1
USBLC6-2SC6
U4
1
Si8540
U5
1
MMBT3904
Q1
1
DMP3017SFG
Q2
1
12401610E4-2A
J1
1
5-20 V⎓
J2
1
Conn_01x14
J3
1
Setup
SW2
1
Power
D1
1
B140-E3
D3
1
Status
D4
1
1.0μF 25V
C1
1
2.2μF
C2
4
0.1μF
C3, C4, C8, C12
2
1μF
C9, C11
4
1uF
C13, C14, C15, C16
6
2kΩ
R1, R3, R4, R7, R15, R17
Show 6 more
QtyPartRefs
1
10kΩ
R2
5
1k
R5, R9, R10, R13, R14
2
15
R6, R11
1
100kΩ
R8
1
10m
R12
1
560k
R16

Usb c otter design files

The KiCad project lives in the lucysrausch/usb-c-otter repository on GitHub; these links point at the commit this page was built from.

Usb c otter: common questions

What microcontroller does the Usb c otter use?

The Usb c otter is built around the STM32F072C8Ux, from the STM32 family.

How big is the Usb c otter PCB?

The Usb c otter measures 42.4 × 16 mm, has 4 copper layers and is 1 mm thick.

How many components are on the Usb c otter?

43 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Usb c otter design files?

From the lucysrausch/usb-c-otter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Usb c otter design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which lucysrausch chose for the repository.

Can I test firmware for the Usb c otter 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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