HardLabs

Pmd keyface

z00m128·pcb-resources·PMD-KeyFace/source/pmd-keyface.kicad_pcb

Pmd keyface PCB layout, top view — open source AVR/Arduino board by z00m128

About the Pmd keyface PCB

Pmd keyface is an open source AVR/Arduino PCB design by z00m128, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 54.7 × 43.7 mm, with 24 components from 13 distinct parts.

Its main chip is the ATtiny2313-20PU, from the AVR/Arduino family. Other key parts include the 74LS32. By type, the board carries 9 diodes, 6 capacitors, 4 resistors, 2 ICs, 2 connectors and 1 crystal.

From the project

A set of printed circuit boards created by me.

My own iteration of PS/2 keyboard interface for PMD85. The PCB is not verified.

Pmd keyface, from the project README
From the project README

Main components on the Pmd keyface

ATtiny2313-20PU74LS32

Pmd keyface bill of materials (BOM)

24 components, 13 distinct parts.

QtyPartRefs
1
ATtiny2313-20PU
U1
1
74LS32
U2
1
20MHz
Y1
1
PMD85
J1
1
Mini-DIN-6
J2
9
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +1
2
100n
C1, C6
2
18p
C2, C3
1
1uF
C4
1
100uF
C5
1
10k
R1
2
1k
R2, R3
1
47k
RN1

Pmd keyface design files

The KiCad project lives in the z00m128/pcb-resources repository on GitHub; these links point at the commit this page was built from.

Pmd keyface: common questions

What microcontroller does the Pmd keyface use?

The Pmd keyface is built around the ATtiny2313-20PU, from the AVR/Arduino family.

How big is the Pmd keyface PCB?

The Pmd keyface measures 54.7 × 43.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pmd keyface?

24 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pmd keyface design files?

From the z00m128/pcb-resources repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Pmd keyface design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Pmd keyface without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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