HardLabs

Keyman64

hbekel·keyman64·hardware/keyman64.kicad_pcb

Keyman64 PCB layout, top view — open source AVR/Arduino board by hbekel

About the Keyman64 PCB

Keyman64 is an open source AVR/Arduino PCB design by hbekel, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 80 × 64.7 mm, with 29 components from 20 distinct parts.

Its main chip is the ATMEGA1284P-PU, from the AVR/Arduino family. Other key parts include the MT8808, 7400, 4051 and 4520. By type, the board carries 8 capacitors, 7 ICs, 6 connectors, 3 resistors, 2 switches and 2 diodes.

It belongs with the retro computing and keyboards designs in this gallery.

From the project

programmable C64 keyboard interceptor and hardware control system

Keyman64 Rev.4 -- Keyboard interceptor and hardware controller Copyright Henning Bekel 2016. Licensed under CERN OSH v.1.2 (see LICENSE.pdf)

This directory contains hardware documentation (as defined by the terms of the CERN OSH v.1.2) for the Keyman64, a programmable keyboard interceptor and hardware controller for the Commodore C64. For more information, please visit

Main components on the Keyman64

MT8808ATMEGA1284P-PU740040514520

Keyman64 bill of materials (BOM)

29 components, 20 distinct parts.

QtyPartRefs
1
MT8808
U1
1
ATMEGA1284P-PU
U2
1
7400
U3
2
4051
U4, U6
1
4520
U5
1
MT8808
U7
1
16MHz
X1
1
POWER
J1
1
COMPUTER
P1
1
KEYBOARD
P2
1
USB
P3
1
SERIAL
P4
1
CONTROL
P5
1
RESET
SW1
1
BOOT
SW2
2
3.6
D1, D2
2
18pF
C1, C2
6
100nF
C6, C7, C8, C9, C10, C11
1
1k5
R1
2
68
R2, R3

Keyman64 design files

The KiCad project lives in the hbekel/keyman64 repository on GitHub; these links point at the commit this page was built from.

Keyman64: common questions

What microcontroller does the Keyman64 use?

The Keyman64 is built around the ATMEGA1284P-PU, from the AVR/Arduino family.

How big is the Keyman64 PCB?

The Keyman64 measures 80 × 64.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyman64?

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

Where can I download the Keyman64 design files?

From the hbekel/keyman64 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Keyman64 design in my own project?

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

Can I test firmware for the Keyman64 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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