Sinclair ZX-81 Expansion

[granz]

New article from Hack-A-Day:

Every ZX81 Expansion Card You Ever Wanted, All At Once

https://hackaday.com/2026/09/15/every-zx81-expansion-card-you-ever-wanted-all-at-once/

[Chris Savage]

That's pretty impressive. Too bad I don't have, and never did have, a ZX81.

[MicroNut]

I have been a member of the forum that the Openspand is mentioned since 2008 and I posted on that blog as oldZX81user. The Openspand is based on the ZXspand that was expensive and hard to get. The developer of the ZXSpand retired it due to parts getting harder to find, I'm glad that someone picked up the torch and made it more feasible with modern less expensive parts. I may make one someday.