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Feather STM32WB55

makeristic·Feather_STM32WB55

Feather STM32WB55 PCB layout, top view — open source STM32 board by makeristic
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About the Feather STM32WB55 PCB

Feather STM32WB55 is an open source STM32 PCB design by makeristic, published on GitHub. It is a 4-layer board measuring 52.5 × 22.9 mm, with 43 components from 29 distinct parts.

Its main chip is the 511-STM32WB55CGU6, from the STM32 family. Other key parts include the MCP73831-2-OT, AP2112K-3.3 and USBLC6-2SC6. By type, the board carries 14 capacitors, 10 resistors, 5 connectors, 4 ICs, 4 diodes and 1 transistor.

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

From the project

Work in progress Feather STM32WB55

This is a work in progress, it may not work at all. :)

I have several Adafruit Feather boards, and Adafruit handily publish the Feather Specification here to make your own.

I recently discovered the STM32WB series of microcontrollers which include Bluetooth connectivity and decided to build my own development board around it. This repository is my first attempt at designing it and builds upon the great work of several sources (see Acknowledgements below).

Feather STM32WB55, from the project README
From the project README

Main components on the Feather STM32WB55

MCP73831-2-OTAP2112K-3.3511-STM32WB55CGU6USBLC6-2SC6

Feather STM32WB55 bill of materials (BOM)

43 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP73831-2-OT
U1
1
AP2112K-3.3
U2
1
511-STM32WB55CGU6
STM32WB55CGU6
STMicroelectronics
U3
1
USBLC6-2SC6
U4
1
NTR4171PT1G
Q1
1
32MHZ
32Mhz
Y1
1
JST-SH Qwiic
J1
1
Conn_Battery
J2
1
Conn_Right
J4
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J5
1
Conn_Left
J6
1
FR05-S1-N-0-102
NN01-102
ANT1
1
MLPF-WB55-01E3
FL1
1
DHT-4235A
SMD-BUTTON-TOP-DHT-4235A_4P-4.2X3.2MM_
SW1
2
LED
D1, D4
1
B5819W
D2
1
WS2812B
D3
1
39N
39n
L1
3
10U
10u
C1, C2, C3
1
1u
C4
Show 9 more
QtyPartRefs
1
1u
C5
1
10N
10n
C6
1
4U7
4u7
C7
6
100N
100n
C8, C9, C10, C11, C12, C13
1
100P
100p
C14
2
1k
R1, R4
3
10K
10k
R2, R3, R5
2
100K
100k
R6, R10
3
5K1
5k1
R7, R8, R9

Feather STM32WB55 design files

The KiCad project lives in the makeristic/Feather_STM32WB55 repository on GitHub; these links point at the commit this page was built from.

Feather STM32WB55: common questions

What microcontroller does the Feather STM32WB55 use?

The Feather STM32WB55 is built around the 511-STM32WB55CGU6, from the STM32 family.

How big is the Feather STM32WB55 PCB?

The Feather STM32WB55 measures 52.5 × 22.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Feather STM32WB55?

43 components, from 29 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 Feather STM32WB55 design files?

From the makeristic/Feather_STM32WB55 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Feather STM32WB55 design in my own project?

The repository has no license, so all rights stay with makeristic. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Feather STM32WB55 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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