HardLabs

Mew

konachan700·Mew·hardware/old-mew-one/kiCad/__test.kicad_pcb

Mew PCB layout, top view — open source STM32 board by konachan700
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About the Mew PCB

Mew is an open source STM32 PCB design by konachan700, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 45.9 × 14.3 mm, with 30 components from 20 distinct parts.

Its main chip is the STM32F103C8, from the STM32 family. Other key parts include the ATSHA204A and TLV70033DDC. By type, the board carries 10 resistors, 5 switches, 5 capacitors, 4 connectors, 3 ICs and 2 diodes.

From the project

Hardware password manager

Forum Wiki Code repo (github) Code repo (gitlab mirror) Hardware Android app sources

Easy to use. Fully open sourced. No drivers or propietary software required. Highly protected for critical data.

Connect MeW to a PC or mobile device. Pair MeW with your smartphone via bluetooth. Install the MeW HPM app from Google Play or Appstore. Use it.

12 passwords, those you use more often, can be entered directly on the device. Other passwords could be entered by MeW HPM app.

Mew, from the project README
From the project README

Main components on the Mew

ATSHA204ASTM32F103C8TLV70033DDC

Mew bill of materials (BOM)

30 components, 20 distinct parts.

QtyPartRefs
1
ATSHA204A
IC1
1
STM32F103C8
U1
1
TLV70033DDC
U2
1
Crystal
Y1
1
USB-MICRO-B
CON1
1
1
P2
1
3
P3
1
2
P4
5
SW_PUSH
SW1, SW2, SW3, SW4, SW5
1
YELLOW
D1
1
LED_RGB_0505
D2
2
22
C1, C2
1
100nf
C3
1
1mf
C4
1
0.1mf
C5
2
1k2
R4, R5
2
22
R6, R7
4
1k5
R8, R10, R11, R12
1
1k
R9
1
330
R13

Mew design files

The KiCad project lives in the konachan700/Mew repository on GitHub; these links point at the commit this page was built from.

Mew: common questions

What microcontroller does the Mew use?

The Mew is built around the STM32F103C8, from the STM32 family.

How big is the Mew PCB?

The Mew measures 45.9 × 14.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mew?

30 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mew design files?

From the konachan700/Mew repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Mew design in my own project?

Yes, under the terms of its GPL-3.0 license, which konachan700 chose for the repository.

Can I test firmware for the Mew 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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