HardLabs

Buttons

sean618·MakerTiles·hardware/Boards/Buttons/v0.1/Buttons.kicad_pcb

Buttons PCB layout, top view — open source STM32 board by sean618

About the Buttons PCB

Buttons is an open source STM32 PCB design by sean618, published on GitHub under the MIT license. It is a 2-layer board measuring 50 × 25 mm, with 31 components from 12 distinct parts.

Its main chip is the C529330, from the STM32 family. Other key parts include the C460519 and C81233. By type, the board carries 9 resistors, 7 ICs, 5 switches, 4 capacitors, 3 connectors and 2 diodes.

It belongs with the sensors designs in this gallery.

From the project

Modular STM32 electronic-tile system: hardware, firmware, the MicroBus + Field Protocol stack, and a Python daemon.

MakerTiles is a system of modular, snap-together electronic tiles. Each tile is a small STM32-based board with a single job — a strip of LEDs, a joystick, a motor, a distance sensor, a screen, a speaker, and so on. Tiles connect on a shared bus, a USB tile bridges the bus to a PC, and a Python daemon on the PC discovers every connected tile and lets you read its inputs and drive its outputs.

Main components on the Buttons

C460519C81233C529330

Buttons bill of materials (BOM)

31 components, 12 distinct parts — part numbers from the project's BOM.

QtyPartRefs
5
C460519
74LVC1G06
U1, U4, U5, U6, U9
1
C81233
ME6211C33M5G-N
U2
1
C529330
STM32G030F6P6
U3
2
C262665
FFC_connector_16p_hinge_lock
J1, J3
1
swd_4pin
J4
1
Buttons v0.1
IGNORE1
5
C480278
button_6x6x9
SW1, SW2, SW3, SW4, SW5
2
C191023
Diode1A600mV
D1, D3
1
C1525
0.1uF
C1
3
C23733
4.7uF
C2, C8, C9
4
C25079
120R
R1, R2, R3, R4
5
C25741
100K
R5, R6, R7, R8, R9

Buttons design files

The KiCad project lives in the sean618/MakerTiles repository on GitHub; these links point at the commit this page was built from.

Buttons: common questions

What microcontroller does the Buttons use?

The Buttons is built around the C529330, from the STM32 family.

How big is the Buttons PCB?

The Buttons measures 50 × 25 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Buttons?

31 components, from 12 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 Buttons design files?

From the sean618/MakerTiles repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Buttons design in my own project?

Yes, under the terms of its MIT license, which sean618 chose for the repository.

Can I test firmware for the Buttons 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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