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BitWrangler.uk

Maker and tinkerer in retro-computers, electronics, micro controllers and software

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BitWrangler.uk

Tag: ZX81

ZX81 Schemtic

ZX81 Composite PCB

November 21, 2021 Gordon Pimblott Electronics, Retro Computers, ZX81

I have a couple of ZX81’s both of which have been modded to output composite video. With the first one[…]

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2114 SRAM Tester

July 7, 2021 Gordon Pimblott Electronics, Projects, Retro Computers, ZX81

On the 40th Anniversary of the ZX81 I retrieved mine from the shelf in my office and plugged it in[…]

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ZX81

My First ZX 81 (1981)

September 20, 2020 Gordon Pimblott Retro Computers, ZX81

I started my computing with a ZX Spectrum 48k.  I never really noticed the ZX80/81 and I don’t remember any[…]

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Recent Posts

  • BBC Micro #3 (Caps, sound and colour)
  • BBC micro #2 (SD game loader)
  • BBC micro #1 (Power supply recapping)
  • Laptop panel recycled as Retro computer display
  • Atari 7800 composite mod
  • C64C Refurbishment

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