2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers99.1 × 82.4 mm
C64ExpansionBreakout
hackup/C64ExpansionBreakout14Breakout Board for the Expansion Port of the C64
- Size
- 99.1 × 82.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 46
- Pads
- 140
- Tracks, vias
- 567, 48
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Oct 2018
- Updated
- 5 May 2020
Overview
C64ExpansionBreakout is an open-source printed circuit board by hackup, from the hackup/C64ExpansionBreakout repository on GitHub. It is a 2-layer board of 99.1 × 82.4 mm with 11 parts on 46 nets, routed with 567 tracks and 48 vias.
Its parts include 5 connectors, 2 ICs, 1 capacitor and 1 switch. It belongs with the retro computing and games and interfaces and adapters boards of this library.
README
README.mdC64ExpansionBreakout
This is an adapter board for the expansion port of the Commodore 64. It connects the expansion port to a standard 830 pin prototyping breadboard to assist with the development of modules or cartridges. USE AT YOUR OWN RISK!
Revision 2
This revision adds an optional on-board slot for either a 27c512 or 27c020 EPROM. The data bus lines D0-D7 and the address bus lines A0-A12 are connected directly to the slot, as are GND and the 5V power rail. The remaining address bus lines of the EPROM and CE/OE are available on J4. Jumper JP1 must be closed if a 27c512 chip is used.
Revision 1
The first revision directly connects all 38 lines from the expansion port tho the breadboard. 5V and GND are connected to the matching rails on the breadboard. A reset button is added for convenience.
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100n | Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | 27C512 | Housings_DIP:DIP-32_W15.24mm_Socket_LongPads | U2 |
| 1 | 27c512 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | JP1 |
| 1 | Breakout | Pin_Headers:Pin_Header_Straight_1x38_Pitch2.54mm | J3 |
| 1 | C64-Exp-Port | C64-Exp-Port:C64-Cart-NoSilkS | U1 |
| 1 | Config | Pin_Headers:Pin_Header_Straight_2x02_Pitch2.54mm | J5 |
| 1 | GND | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J2 |
| 1 | LOGO | Logo:bigby | G*** |
| 1 | Other | Socket_Strips:Socket_Strip_Straight_1x06_Pitch2.54mm | J4 |
| 1 | Power | Pin_Headers:Pin_Header_Straight_2x02_Pitch2.54mm | J1 |
| 1 | Reset | Buttons_Switches_THT:SW_PUSH_6mm | SW1 |
Questions
How big is the C64ExpansionBreakout PCB?
It measures 99.1 × 82.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the C64ExpansionBreakout use?
11 parts. 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 C64ExpansionBreakout KiCad files?
From the hackup/C64ExpansionBreakout repository on GitHub, at the commit this page was made from: the board is C64ExpansionBreakout.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the C64ExpansionBreakout design in my own project?
Its repository states no licence, so its author keeps all rights: ask hackup before reusing the design.
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