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ZX81 Expansion Breakout

BrettHallen·Sinclair·ZX81_Expansion_Breakout/ZX81_Expansion_Breakout.kicad_pcb

ZX81 Expansion Breakout layout, top view — open source board by BrettHallen
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About the ZX81 Expansion Breakout

ZX81 Expansion Breakout is an open source PCB design by BrettHallen, published on GitHub. It is a 2-layer board measuring 61.2 × 53.3 mm, with 8 components from 7 distinct parts.

By type, the board carries 5 connectors, 2 resistors and 1 switch.

It belongs with the test & measurement and dev boards & breakouts designs in this gallery.

From the project

Projects for Sinclair computers (ZX80, ZX81, TS1000, TS1500, TS2068, Spectrum and clones)

Note! These projects maybe work-in-progress and thus not completed or fully tested!

ZX81 Expansion Breakout bill of materials (BOM)

8 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ZX81 Expansion
J1
1
Pin Header Breakout
J2
1
ZX81 Extender
J3
2
GND LINK
J4, J5
1
RESET
SW1
1
470Ω
R1
1
LINK
R2

ZX81 Expansion Breakout design files

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

ZX81 Expansion Breakout: common questions

How big is the ZX81 Expansion Breakout?

The ZX81 Expansion Breakout measures 61.2 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ZX81 Expansion Breakout?

8 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ZX81 Expansion Breakout design files?

From the BrettHallen/Sinclair repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the ZX81 Expansion Breakout design in my own project?

The repository has no license, so all rights stay with BrettHallen. Use it as a reference, and ask the author before reusing the design.

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