Last additions - wizged's Gallery
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Baseboard assembly - stage 1782 viewsMost of the passive components installedDec 28, 2012
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A set of completed keyswitches392 viewsThe result of a few hours on the keyswitch production lineDec 28, 2012
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Completed keyswitch394 viewsI used the keyboard frame to temporarily hold each switch vertical while the adapter board was attached, using the same solder/ screwdriver pressure/remelt technique to ensure a tight PCB fit to the keyswitch baseDec 28, 2012
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High tech keyswitch assembly jig445 viewsI then just added the PCB and soldered the 2 pins at the right. To ensure both pin collars were hard up against the board, I used a screwdriver to apply pressure to the centre of the board and just remelted the solder. The 3rd pin is not soldered, it just helps to hold the board in positionDec 28, 2012
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High tech keyswitch assembly jig431 viewsUsing a keyswitch adapter PCB as a template, I drilled 3x 1mm holes in a piece of timber to hold the PCB pins straightDec 28, 2012
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Power Supply415 viewsA custom built power supply that ran the Microbee, Beeboard and 5.25" floppy drive. The large transformer was also custom built and hand wound! There are some hefty heatsinks on the back panel which can't be seen here. It was a simple set of separate linear power supplies, one for each of the voltages needed and running from multiple transformer windings.Feb 22, 2012
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Expansion Box406 viewsA custom built box made from galvanised steel and painted matt black (nice!). Power supply on the left, BeeBoard on the right. The Beeboard included extra serial and parallel ports, which I presented thru the usual D connections on the front panel. The serial port chips were never installed or wired. The small veroboard at the right was a mod/fix of some kind but can't remember exactly what it did...yetFeb 22, 2012
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Microbee connected to expansion box383 viewsThe main BeeBoard expansion board connected via 2 cables - the normal Microbee expansion connection and a smaller connector from a 2nd Beeboard Clock Board that was installed inside the Microbee case. You can also see some mods to the core board (yellow wires) that were part of the BeeBoard installationFeb 22, 2012
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The Rig374 viewsAll the bits (minus 5.25" floppy drive and printer). Not working though unfortunatelyFeb 22, 2012
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BeeBoard I588 viewsBeeBoards featured a floppy disk controller, 2x additional 64KB banks of memory and 2 extra parallel & serial portsFeb 22, 2012
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