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USB-LED-Otter

Jana-Marie·USB-LED-Otter

USB-LED-Otter PCB layout, top view — open source STM32 board by Jana-Marie

About the USB-LED-Otter PCB

USB-LED-Otter is an open source STM32 PCB design by Jana-Marie, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 12 × 15 mm, with 14 components from 8 distinct parts.

Its main chip is the STM32F072CBU6, from the STM32 family. Other key parts include the MCP1700T-3302E/TT. By type, the board carries 5 connectors, 5 capacitors, 2 ICs, 1 switch and 1 resistor.

It belongs with the usb & debug tools designs in this gallery.

From the project

Tiny USB to adressable LED adapter. Fits in your USB port :3

$ cd USB-LED-Otter-FW $ make $ dfu-util -a 0 -s 0x08000000:leave -D build/firmware.bin

USB-LED-Otter, from the project README
From the project README

Main components on the USB-LED-Otter

MCP1700T-3302E/TTSTM32F072CBU6

USB-LED-Otter bill of materials (BOM)

14 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP1700T-3302E/TT
MCP1700-3302E_SOT23
U1
1
STM32F072CBU6
STM32F072CBUx
U2
1
USB
J1
3
PAD
J2, J4, J5
1
LED
J3
1
EVQ-P7A01P
DFU
SW1
5
100N
100n
C1, C2, C3, C4, C5
1
CRCW120610K0FKEA
10k
Vishay
R1

USB-LED-Otter design files

The KiCad project lives in the Jana-Marie/USB-LED-Otter repository on GitHub; these links point at the commit this page was built from.

USB-LED-Otter: common questions

What microcontroller does the USB-LED-Otter use?

The USB-LED-Otter is built around the STM32F072CBU6, from the STM32 family.

How big is the USB-LED-Otter PCB?

The USB-LED-Otter measures 12 × 15 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the USB-LED-Otter?

14 components, from 8 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 USB-LED-Otter design files?

From the Jana-Marie/USB-LED-Otter repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the USB-LED-Otter design in my own project?

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

Can I test firmware for the USB-LED-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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