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STM32-Bluetooth

Hamidrezanobari·STM32-Bluetooth

STM32-Bluetooth PCB layout, top view — open source STM32 board by Hamidrezanobari

About the STM32-Bluetooth PCB

STM32-Bluetooth is an open source STM32 PCB design by Hamidrezanobari, published on GitHub. It is a 4-layer board measuring 49 × 27.3 mm, with 40 components from 21 distinct parts.

Its main chip is the STM32WB55CEU6, from the STM32 family. Other key parts include the MIC5365-3.3YD5. By type, the board carries 19 capacitors, 7 resistors, 3 connectors, 3 inductors, 2 ICs and 2 crystals.

It belongs with the iot & wireless and rf & radio designs in this gallery.

From the project

KICAD Design

A compact STM32WB55-based development board with USB-C, designed for BLE-enabled embedded projects.

- U3 — STM32WB55CEU6 (main MCU with integrated BLE radio) - U, U2 — MIC5365-3.3YD5 (3.3V LDO regulators) - J1 — USBCReceptacleUSB2.016P (USB-C connector footprint) - J2 — ConnARMSWDTagConnectTC2030 (SWD / Tag-Connect debug header) - X1 — 32 MHz crystal (main oscillator for MCU) - Y? / FLT — 32.768 kHz (RTC crystal footprint present; 3D models show NX2012SA-32.768K) - DLF162500LT-5028A1 — footprint present in bluetoothLib (likely antenna or related footprint) - Passive components: decoupling…

Main components on the STM32-Bluetooth

MIC5365-3.3YD5STM32WB55CEU6

STM32-Bluetooth bill of materials (BOM)

40 components, 21 distinct parts.

QtyPartRefs
1
MIC5365-3.3YD5
U2
1
STM32WB55CEU6
U3
1
32MHz
X1
1
32KHz76B
X2
1
USB_C_Receptacle_USB2.0_16P
J1
1
Conn_01x04_Pin
J3
1
Conn_Coaxial
J4
1
DLF162500LT-5028A1
FLT1
1
SW_Push
SW1
1
LED
D1
1
USBLC6-2SC6
D2
1
10n
L1
1
10u
L2
1
2n7
L3
5
4u7
C1, C6, C8, C11, C14
10
100n
C2, C3, C4, C5, C7, C9, C10, C12 +2
1
Op8
C15
2
10p
C16, C19
1
Op3
C17
3
5k1
R1, R2, R6
Show 1 more
QtyPartRefs
4
220R
R3, R4, R5, R7

STM32-Bluetooth design files

The KiCad project lives in the Hamidrezanobari/STM32-Bluetooth repository on GitHub; these links point at the commit this page was built from.

STM32-Bluetooth: common questions

What microcontroller does the STM32-Bluetooth use?

The STM32-Bluetooth is built around the STM32WB55CEU6, from the STM32 family.

How big is the STM32-Bluetooth PCB?

The STM32-Bluetooth measures 49 × 27.3 mm, has 4 copper layers and is 1.58 mm thick.

How many components are on the STM32-Bluetooth?

40 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the STM32-Bluetooth design files?

From the Hamidrezanobari/STM32-Bluetooth repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the STM32-Bluetooth design in my own project?

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

Can I test firmware for the STM32-Bluetooth 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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