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BitWrangler.uk

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

  • Calculators
  • Retro Computers
    • Acorn Electron
    • Atari
    • Commodore 64
    • ZX81
    • ZX Spectrum
  • Projects
    • Electronics
BitWrangler.uk

Month: July 2021

C64 motherboard

C64 with Flickering Video

July 24, 2021 Gordon Pimblott Commodore 64, Retro Computers

Having been a Spectrum owner back in the day I never experienced the C64, but have watched numerous being fixed[…]

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C64 Diagnostics Cards

July 16, 2021 Gordon Pimblott Commodore 64, Electronics, Projects, Retro Computers

Diagnostics cards are an essential weapon in the retro fixers toolkit. I have quite a few different diagnostics cards for[…]

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Spectrum Demo board

Naked Spectrum

July 10, 2021 Gordon Pimblott Electronics, Projects, Retro Computers, ZX Spectrum

While fixing previous spectrums I bought a cheap motherboard in poor condition to use for spares. I knew it was[…]

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Dandanator mini PCB

Building a Dandanator mini

July 10, 2021 Gordon Pimblott Electronics, Projects, Retro Computers, ZX Spectrum

The Dandanator mini is an expansion card for the ZX Spectrum that enables fast ROM/game loading from a pre-programmed EEPROM.[…]

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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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Z80 Processor tester

Z80 Processor tester

July 7, 2021 Gordon Pimblott Electronics, Projects, Retro Computers, ZX Spectrum

The Z80 processor is a classic micro-processor. Originally designed in the 1970’s variants are still in production, and widely available[…]

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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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    • Electronics
  • Retro Computers
    • Acorn Electron
    • Atari
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    • Commodore 64
    • ZX Spectrum
    • ZX81

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