Expansion breakout
About the Expansion breakout
Expansion breakout is an open source PCB design by nojan1, published on GitHub. It is a 2-layer board measuring 73.9 × 69 mm, with 7 components from 7 distinct parts.
By type, the board carries 5 connectors, 1 jumper and 1 capacitor.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
The purpose of Project Wrass is to develop the Wrass 1.
The purpose of Project Wrass is to develop the Wrass 1.
A 6502 based computer having the following specs.
W65C02 running at 2Mhz Bankable RAM giving a total of approx 300KB of usable memory * Expansion bus for up to 16 devices
The 16KB ROM is bankable using an external switch. This allows the computer to run "2 sets" of software.
The existing one is a simple homebrew "monitor" giving access to simple read, write and jump commands.
Expansion breakout bill of materials (BOM)
7 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | IN | PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | OUT1 | PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | OUT2 | PinSocket_2x20_P2.54mm_Vertical | J3 |
| 1 | OUT3 | PinSocket_2x20_P2.54mm_Vertical | J4 |
| 1 | PWR | TerminalBlock_Altech_AK300-2_P5.00mm | J5 |
| 1 | PWR_Select | PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | 1u | C_Radial_D8.0mm_H7.0mm_P3.50mm | C1 |
Expansion breakout design files
The KiCad project lives in the nojan1/project-wrass repository on GitHub; these links point at the commit this page was built from.
Expansion breakout: common questions
How big is the Expansion breakout?
The Expansion breakout measures 73.9 × 69 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Expansion breakout?
7 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Expansion breakout design files?
From the nojan1/project-wrass repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Expansion breakout design in my own project?
The repository has no license, so all rights stay with nojan1. Use it as a reference, and ask the author before reusing the design.
More boards in project-wrass
RP2040/RP2350All in one smc
161.1 × 82.9 mm146 parts4LNo license0
Keyboard
372.1 × 159.1 mm136 parts2LNo license0
Main board
230 × 100 mm74 parts4LNo license0
FPGAFpga gpu
99.3 × 76 mm67 parts2LNo license0
Io card
230 × 100 mm61 parts2LNo license0
Uart
100 × 100 mm53 parts4LNo license0
Audio card
182.4 × 99.1 mm31 parts2LNo license0
Expansion backplane
235.7 × 78.5 mm19 parts2LNo license0
Lcd interface
140.2 × 81.3 mm16 parts2LNo license0
Expansion skeleton
182.4 × 99.1 mm10 parts2LNo license0
Expansion-40-to-50-conversion
24.4 × 68.8 mm3 parts2LNo license0
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