2 layers160.3 × 65 mm
CodyKeyboard
fjmilens3/cody-computer
Design files and source code for the Cody Computer.
33 parts64GPL-3.0
2 layers160 × 100 mm
CodyComputer
fjmilens3/cody-computer64Design files and source code for the Cody Computer.
- Size
- 160 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 107
- Pads
- 348
- Tracks, vias
- 689, 47
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 13 Dec 2024
- Updated
- 25 May 2025
Overview
CodyComputer is an open-source printed circuit board by fjmilens3, from the fjmilens3/cody-computer repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 160 × 100 mm with 59 parts on 107 nets, routed with 689 tracks and 47 vias.
It is built around the P8X32A-D40, 74HC541D and 24LC256-I/P, with the LM2937ET-3.3 among its other parts. Its parts include 14 resistors, 11 capacitors, 10 diodes, 9 connectors and 8 ICs. It belongs with the retro computing and games boards of this library.
Main components
4
P8X32A-D40
DIP-4032 32KB 80MHz Others DIP-40 Microcontrollers (MCU/MPU/SOC) ROHSParallaxMicrocontrollers (MCU/MPU/SOC)
74HC541D
SO-20-300mil-40℃~+125℃ 1 12ns@4.5V,50pF 160uA 2V~6V 7.8mA 7.8mA 74HC 8 Output enable Tri-State Unidirectional SO-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
24LC256-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 256Kbit 400kHz 5ms Hardware write protection function、Noise suppression function I2C PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM
LM2937ET-3.3
TO-220-3-40℃~+125℃ 1 10mA 1V@(500mA) 26V 3.3V 500mA Fixed Over Current Protection、Thermal Shutdown、ESD Protection、Enable、Short Circuit Protection、Under Voltage Lockout (UVLO)、Over Voltage Protection Positive TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdThe Cody Computer Project
This repository contains the design files and source code for the Cody Computer, an 8-bit home computer built around the WDC 65C02 and the Parallax Propeller.
Each subdirectory contains a portion of the design:
KiCadcontains the design files for the Cody Computer's electronics.OpenSCADcontains the design files for the Cody Computer's printable parts.PDFcontains generated PDFs of the KiCad schematics.Spincontains the Propeller.spinfiles for the Propeller's firmware.STLcontains the generated STL files suitable for slicing and printing.Tasscontains the64tassassembly files for Cody BASIC and demo programs.CodyBASICcontains some sample Cody BASIC programs used for demo purposes.
All design files and sources are released under the GPL version 3. A mention of the Cody Computer in any derived works is also appreciated.
The Cody Computer Book detailing the project is not released under the GPL but may be freely distributed. Visit www.codycomputer.org for more information.
If any technical issues or inaccuracies are found in any of the material, please reach out to the author or raise an issue on GitHub.
Frederick John Milens III
December 2024
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 1N4148 | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 9 | 0.1uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C2, C3, C4, C6, C8, C9, C10, C11 |
| 6 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R9, R10, R11, R12, R13 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R2, R14 |
| 1 | 1.1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6 |
| 1 | 1000uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C7 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
| 1 | 24LC256 | Package_DIP:DIP-8_W7.62mm_Socket | U4 |
| 1 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 3.3K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8 |
| 1 | 4051 | Package_DIP:DIP-16_W7.62mm_Socket | U8 |
| 1 | 560 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 5MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 74HC541 | Package_DIP:DIP-20_W7.62mm_Socket | U1 |
| 1 | AS6C1008 | Package_DIP:DIP-32_W15.24mm_Socket | U6 |
| 1 | Audio Out | Cody_Components:CodyRCAJack | J5 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | Cody Expansion/Cartridge Port | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Horizontal | J6 |
| 1 | Developer Mode Enable | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Joystick 1 | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J8 |
| 1 | Joystick 2 | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J9 |
| 1 | Keyboard Connector | Connector_PinHeader_2.54mm:PinHeader_1x11_P2.54mm_Vertical | J7 |
| 1 | LM2937ET-3.3 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U2 |
| 1 | LOGO | Cody_Components:CodyPawprint | G*** |
| 1 | P8X32A-D40 | Package_DIP:DIP-40_W15.24mm_Socket | U3 |
| 1 | Power LED | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | PropPlug | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J3 |
| 1 | Video Out | Cody_Components:CodyRCAJack | J4 |
| 1 | W65C02SxP | Package_DIP:DIP-40_W15.24mm_Socket | U5 |
| 1 | W65C22SxP | Package_DIP:DIP-40_W15.24mm_Socket | U7 |
The 55 most common of 59 parts.
Questions
How big is the CodyComputer PCB?
It measures 160 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CodyComputer use?
59 parts, built around the P8X32A-D40, 74HC541D, 24LC256-I/P and LM2937ET-3.3. 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 CodyComputer KiCad files?
From the fjmilens3/cody-computer repository on GitHub, at the commit this page was made from: the board is KiCad/CodyComputer/CodyComputer.kicad_pcb and its schematic KiCad/CodyCartridge/CodyCartridge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CodyComputer 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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