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The bat board: a stm32 qfp48 breakout board

flabbergast·kicad·stm32_qfp48_breakout/stm32_qfp48_breakout.kicad_pcb

The bat board: a stm32 qfp48 breakout board layout, top view — open source STM32 board by flabbergast

About the The bat board: a stm32 qfp48 breakout board

The bat board: a stm32 qfp48 breakout board is an open source STM32 PCB design by flabbergast, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 35.6 × 17.8 mm, with 24 components from 19 distinct parts.

Its main chip is the STM32L052C8T7, from the STM32 family. Other key parts include the NCV8170. By type, the board carries 9 capacitors, 3 jumpers, 3 resistors, 2 ICs, 2 switches and 1 crystal.

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

From the project

flabbergast's kicad files

This is a PCB for a 45% keyboard. Supports ALPS and Cherry MX switches. No LEDs, only one SMT LED on the front bottom side. The supported layouts are this and this.

The controller MCU is STM32F042K6T7 - 32kB flash, 6kB RAM, DFU bootloader in ROM, LQFP-32 package. The BOOT0 pin for entering the bootloader on power up is brought out to a pushbutton on the bottom side of the PCB.

Main components on the The bat board: a stm32 qfp48 breakout board

STM32L052C8T7NCV8170

The bat board: a stm32 qfp48 breakout board bill of materials (BOM)

24 components, 19 distinct parts.

QtyPartRefs
1
STM32L052C8T7
IC1
1
NCV8170
IC2
1
CRYSTAL
Y1
1
USB_mini_micro_B
J1
1
FERRITE-BEAD
F1
1
USB_PWR
JP1
1
reg
JP2
1
BT0
JP3
1
M01
PAD1
1
RESET
S1
1
PA1
S2
1
LED
D1
4
0.1uF
C1, C2, C3, C4
2
2.2uF
C5, C6
1
1uF
C7
2
18pF
C8, C9
1
10kR
R1
1
1kR
R2
1
1.5kR
R3

The bat board: a stm32 qfp48 breakout board design files

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

The bat board: a stm32 qfp48 breakout board: common questions

What microcontroller does the The bat board: a stm32 qfp48 breakout board use?

The The bat board: a stm32 qfp48 breakout board is built around the STM32L052C8T7, from the STM32 family.

How big is the The bat board: a stm32 qfp48 breakout board?

The The bat board: a stm32 qfp48 breakout board measures 35.6 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the The bat board: a stm32 qfp48 breakout board?

24 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the The bat board: a stm32 qfp48 breakout board design files?

From the flabbergast/kicad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the The bat board: a stm32 qfp48 breakout board design in my own project?

Yes, under the terms of its BSD-3-Clause license, which flabbergast chose for the repository.

Can I test firmware for the The bat board: a stm32 qfp48 breakout board 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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