2 layers75 × 57.5 mm
Kb usb to coco
hcgernhardtiii/kb-usb-to-coco
Adapts a USB keyboard for use on a TRS-80 Color Computer 1, 2, or 3
38 parts1GPL-3.0
2 layers80 × 64.7 mm
Keyman64
hbekel/keyman6418programmable C64 keyboard interceptor and hardware control system
- Size
- 80 × 64.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 93
- Pads
- 264
- Tracks, vias
- 1,271, 17
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 12 Aug 2015
- Updated
- 5 May 2023
Overview
Keyman64 is an open-source printed circuit board by hbekel, from the hbekel/keyman64 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 80 × 64.7 mm with 33 parts on 93 nets, routed with 1,271 tracks and 17 vias.
It is built around the ATMEGA1284P-PU and MT8808AP1. Its parts include 8 capacitors, 7 ICs, 6 connectors, 3 resistors and 2 diodes. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA1284P-PU
PDIP-40-40℃~+85℃ 1.8V~5.5V 10bit 128KB 16KB 20MHz 32 4KB 8 Bit AVR Built-in FLASH PDIP-40 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)MT8808AP1
PLCC-28(11.5x11.5)-40℃~+85℃ 20pF 30ns 4.5V~13.2V 45MHz 65Ω 8 8:8 PLCC-28(11.5x11.5) Analog Switches, Multiplexers ROHSMicrochip TechnologyAnalog Switches, Multiplexers
README
READMEKeyman64
Programmable C64 keyboard interceptor and hardware control system
The keyman64 is a programmable keyboard interceptor and hardware control system for computers equipped with a simple 64-key matrix keyboard.
It is installed between the keyboard and the computer, continually scanning the keyboard matrix and relaying the keyboard state to the computer using a crosspoint switch. To the computer, the crosspoint switch matrix looks just like a physical keyboard, while the keyman64 gains the ability to intercept keystrokes and control the matrix seen by the computer.
The keyman64 can be configured to intercept special key combinations and invoke arbitrary sequences of commands to alter the state of sixteen general purpose control lines provided on the board. These lines can be used to control additional hardware instead of using physical buttons or switches.
Additional features include the ability to send predefined keyboard macros or to redefine the keyboard layout. Commands can also be sent from a remote PC via USB, or send on simple serial wire interface, allowing remote control from either a PC or another microcontroller or similar device.
For some concrete examples of what the keyman64 can do, see the
http://www.henning-bekel.de/keyman64/#configuration-examples
Please refer to the project page http://www.henning-bekel.de/keyman64 for detailed documentation.
Copyright 2016 Henning Bekel h.bekel@googlemail.com
LICENSING
Hardware licenced under CERN OHL v.1.2, see ./hardware/LICENSE.txt Software and firmware licenced under GNU GPLv3, see ./LICENSE
The software contains MIT licensed code from https://github.com/arkku/ihex for reading Intel HEX files, Copyright (c) 2013-2015 Kimmo Kulovesi, see ./intelhex/LICENSE
The firmware contains the V-USB Driver (https://www.obdev.at/vusb), (C)2008 Objective Development GmbH.
Distributed in the ./bootloader directory is the USBasp bootloader, (C)2013 Stephan Baerwolf (matrixstorm@gmx.de) and (C)2008 Objective Development GmbH (https://www.obdev.at/vusb).
In compliance with the terms of the (identical) V-USB driver and USBasp bootloader licenses (./firmware/usbdrv/License.txt and ./bootloader/License.txt), the entire project is published under
http://www.henning-bekel.de/keyman64
In addition, this distribution contains
- a circuit diagram in PDF format, see ./hardware/keyman64-schematics.pdf
- the full source code for the host software in ./firmware
- this README file
- references to https://www.obdev.at/vusb
The USB Product and Vendor IDs for the Keyman64 USB device have kindly been provided by OpenMoko, Inc (http://openmoko.org).
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C6, C7, C8, C9, C10, C11 |
| 4 | CONN_1 | Mounting_Holes:MountingHole_4mm | H1, H2, H3, H4 |
| 2 | 18pF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C1, C2 |
| 2 | 3.6 | Diode:D3 | D1, D2 |
| 2 | 4051 | Sockets_DIP:DIP-16__300 | U4, U6 |
| 2 | 68 | Discret:R3 | R2, R3 |
| 1 | 16MHz | Crystals:HC-49V | X1 |
| 1 | 1k5 | Discret:R3 | R1 |
| 1 | 4520 | Sockets_DIP:DIP-16__300 | U5 |
| 1 | 7400 | Sockets_DIP:DIP-14__300 | U3 |
| 1 | ATMEGA1284P-PU | Sockets_DIP:DIP-40__600 | U2 |
| 1 | BOOT | Diode:Button | SW2 |
| 1 | COMPUTER | Diode:pinHeader-20x1 | P1 |
| 1 | CONTROL | pinHeaders:pin_array_8x2 | P5 |
| 1 | KEYBOARD | Diode:pinHeader-20x1 | P2 |
| 1 | MT8808 | Sockets_DIP:DIP-28__600 | U1 |
| 1 | MT8808 | Sockets:PLCC28 | U7 |
| 1 | POWER | pinHeaders:pinHeader-3x1 | J1 |
| 1 | RESET | Diode:Button | SW1 |
| 1 | SERIAL | pinHeaders:pinHeader-2x1 | P4 |
| 1 | USB | usb-mini-b-through-hole:USB-MINI-B-H | P3 |
Questions
How big is the Keyman64 PCB?
It measures 80 × 64.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyman64 use?
33 parts, built around the ATMEGA1284P-PU and MT8808AP1. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Keyman64 KiCad files?
From the hbekel/keyman64 repository on GitHub, at the commit this page was made from: the board is hardware/keyman64.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyman64 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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