HardLabs

Picowalker-32

mamba2410·picowalker-32·kicad/picowalker-32.kicad_pcb

Picowalker-32 PCB layout, top view — open source STM32 board by mamba2410
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About the Picowalker-32 PCB

Picowalker-32 is an open source STM32 PCB design by mamba2410, published on GitHub. It is a 2-layer board measuring 44.1 × 51 mm, with 50 components from 31 distinct parts.

Its main chip is the STM32U535CET6-modified, from the STM32 family. Other key parts include the TFBS4711-TT1, M95512-DRMN8TP/K, MCP73871, BMA400 and W25Q128JVS. By type, the board carries 17 capacitors, 16 resistors, 8 ICs, 4 switches, 3 connectors and 1 battery holder.

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

From the project

PCB + firmware for Pokewalker-like device

Thsi repo contains all the designs, schematics, pcb layouts and code for the picowalker-32 project.

The picowalker-32 is a modern, open source and faithful recreation of the Pokewalker from Pokemon HeartGold/SoulSilver. The goal is to have a device that fully mimics the features and functionality of a Pokewalker, except made with modern features such as a rechargeable battery, colour screen and an additional flash memory chip to store more data.

Main components on the Picowalker-32

TFBS4711-TT1M95512-DRMN8TP/KMCP73871BMA400W25Q128JVSMCP1700x-180xxTTUSBLC6-2P6STM32U535CET6-modified

Picowalker-32 bill of materials (BOM)

50 components, 31 distinct parts.

QtyPartRefs
1
TFBS4711-TT1
IC1
1
M95512-DRMN8TP/K
M95512-DRMN8TP_K
IC2
1
MCP73871
U1
1
BMA400
U3
1
W25Q128JVS
U4
1
MCP1700x-180xxTT
U10
1
USBLC6-2P6
U11
1
STM32U535CET6-modified
U12
1
DBG_HDR
J1
1
PROGRAM_HDR
J2
1
USB_C_Receptacle_USB2.0
J5
1
LPR553535A
BT2
1
Speaker
BZ1
3
SW_Push
SW1, SW2, SW3
1
BOOTSEL
SW5
5
0.1uF
C1, C3, C4, C5, C6
2
4.7uF
C2, C26
4
100nF
C10, C18, C19, C21
1
C
C16
4
10uF
C20, C23, C24, C25
Show 11 more
QtyPartRefs
1
1uF
C22
1
56R
R1
1
47R
R2
3
100k
R3, R4, R5
2
10k
R18, R26
2
5k1
R19, R20
3
100k
R22, R24, R25
1
20k
R27
1
R
R28
1
330k
R29
1
110k
R30

Picowalker-32 design files

The KiCad project lives in the mamba2410/picowalker-32 repository on GitHub; these links point at the commit this page was built from.

Picowalker-32: common questions

What microcontroller does the Picowalker-32 use?

The Picowalker-32 is built around the STM32U535CET6-modified, from the STM32 family.

How big is the Picowalker-32 PCB?

The Picowalker-32 measures 44.1 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Picowalker-32?

50 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Picowalker-32 design files?

From the mamba2410/picowalker-32 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Picowalker-32 design in my own project?

The repository has no license, so all rights stay with mamba2410. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Picowalker-32 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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