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Sharkropad

mawaeg·Sharkropad·electronics/Sharkropad.kicad_pcb

Sharkropad PCB layout, top view — open source STM32 board by mawaeg

About the Sharkropad PCB

Sharkropad is an open source STM32 PCB design by mawaeg, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 83.8 × 87.6 mm, with 101 components from 24 distinct parts.

Its main chip is the STM32L432KCU6, from the STM32 family. Other key parts include the SN74LVC2T45DCURE4, USBLC6-2SC6 and LM1117MPX-3.3/NOPB. By type, the board carries 33 diodes, 33 capacitors, 14 switches, 12 resistors, 4 ICs and 3 connectors.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

Sharkropad is an open-source hotswappable macropad supporting QMK.

Sharkropad is an open-source hotswappable macropad supporting QMK/VIA.

This repository includes a custom pcb design, a 3d printed case and QMK/VIA firmware.

The Sharkropad is based on a custom pcb. You can find the manufacturing files in the latest release.

I got my pcb manufactured and assembled from JLCPCB.

In case you want to assemble the pcb yourself you can find all the needed parts in the bom in the latest release.

Sharkropad, from the project README
From the project README

Main components on the Sharkropad

SN74LVC2T45DCURE4USBLC6-2SC6STM32L432KCU6LM1117MPX-3.3/NOPB

Sharkropad bill of materials (BOM)

101 components, 24 distinct parts.

QtyPartRefs
1
SN74LVC2T45DCURE4
SN74LVC2T45DCUR
U1
1
USBLC6-2SC6
U2
1
STM32L432KCU6
STM32L432KCUx
U3
1
LM1117MPX-3.3/NOPB
LM1117MP-3.3
U4
1
ECS-80-18-33-JGN-TR
Crystal_GND24
Y1
1
I2C
J1
1
USB4105-GF-A-120
USB_C_Receptacle_USB2.0_14P
J2
1
SWD
J3
1
MF-FSML050/8-2
500mA
F1
1
TL3342F160QG
SW_Push
SW1
1
RotaryEncoder_Switch
SW2
12
SW_Push
SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10 +4
13
BAS16H,115
D
D1, D2, D3, D4, D5, D6, D7, D8 +5
20
SK6812MINI-E
D13, D14, D15, D16, D17, D18, D19, D20 +12
28
GCM188R71C104KA37J
0.1u
C1, C6, C7, C8, C9, C10, C11, C12 +20
2
GRM188C81E105KAADD
1u
C2, C5
2
GRM1885C2A220JA01J
22p
C3, C4
1
GCJ188C70J475KE02D
4.7u
C18
2
CRCW060322R0FKEA
22
R1, R2
1
CRCW0603390RFKEA
390
R3
Show 4 more
QtyPartRefs
1
CRCW060310K0FKEI
10k
R4
2
CRCW06031K00FKED
1k
R6, R7
2
CRCW06035K10FKEC
5.1k
R8, R9
4
CRCW0603499RFKEA
500
R10, R11, R12, R13

Sharkropad design files

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

Sharkropad: common questions

What microcontroller does the Sharkropad use?

The Sharkropad is built around the STM32L432KCU6, from the STM32 family.

How big is the Sharkropad PCB?

The Sharkropad measures 83.8 × 87.6 mm, has 2 copper layers and is 1.600198 mm thick.

How many components are on the Sharkropad?

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

Where can I download the Sharkropad design files?

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

Can I use the Sharkropad design in my own project?

Yes, under the terms of its GPL-3.0 license, which mawaeg chose for the repository.

Can I test firmware for the Sharkropad 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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