Category: Blog

  • Javelin – A home built computer – Part 1

    Yes, I’ve been here before… many, many times. I’m not sure how much time I’ve spent over the years designing and building computers. I’ve got, for example, a 6502 CPU based system modelled on the Acorn System 1. I’ve got several single board computers based on 6502’s Z80’s. 6809’s etc, multi-board computers, but the one…

  • Heat-Shrink cutters

    I landed a piece of assembly work consisting of soldering some thru-hole components onto some PCBs and create a bunch of simple wire harnesses. There is a join on the harness that needs a piece of heat-shrink to insulate it, and I was getting really tired of trying to cut hundreds of pieces all the…

  • Restoring Electronic Project Kits – Part 5

    Bulbs !! Some of the kits have one or more bulbs attached to the baseboard. Typically these are 3.5v, 200mA MES bulbs, usually coloured red, but I’ve seen kits with green and yellow bulbs as well. Replacements are available to purchase and if you’re only after one, then this may be a sensible way to…

  • Restoring Electronic Project Kits – Part 4

    Just a very quick update. I found a lovely crystal radio kit on Ebay that needed some attention. Some bits were missing and the connection springs were all corroded. The good news with this kit was that the main components seemed fine and the corrosion hadn’t yet spread to the component leads. It also came…