• Retro Challenge 2017/4 – Keyboard Investigations

    After a visual check of the keyboards (see this post), I had a couple of questions, which were do the keyboards work? and how do the keyboards work? On the basis that neither of the Alphameric had their EPROM windows covered, and that one of the Cherry keyboards had already been modified, I chose the […]

  • RC2014 SD Bootloader Update

    Just a quick update to about the SD Bootloader I designed a few posts ago.  Well, the PCBs have arrived and last week I took a soldering iron to one of them and gave it a quick test One side of the board is effectively an Arduino, so without plugging it in to the RC2014, I […]

  • Modern Twist on Analog Dials

    These days displays are all digital readouts or multifunction LCD screens that give you indications of pretty much everything that’s going on.  What seems to be lacking though is a good old fashioned analog dial with a needle pointing at a number.  Of course, a dial is normally limited to a single use, but I wanted to […]

  • An aDventure in to aProtocol (or LLAP)

    I’ve been messing about with Arduino derived micro controllers, and have been looking for a way to get them to send simple messages to and from each other. Something simpler than TCP/IP (which requires special hardware and relatively large libraries to run it), but more generic and flexible than just connecting an output pin on […]

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