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Step 8Prepare the PCB registers.
One PCB will be for "Side A" of your shift register and the other "Side B"
So, for instance, if "Pin 3" on "Side A" has 9 alphanumeric symbols associated with it, then the PCB that represents "Side A" should have 9 connected wires of about 12" running off of it.
And to these 9 wires (electrically connected on the PCB) you would then connect the wire from your hacked keyboard that represents "Pin 3" of "Side A".
Essentially, all of these 9 wires would need to be connected to "Pin 3."
So..... when you're done, each board should have one wire running off of it for every typewriter key you plan on using.
They should be a mess of wires, as seen in my picture.
Another thing to consider is that some PCBs have holes in them to connect them to stands. I connected mine to a small acrylic stand. I did this so that none of the soldered connections accidentally get bridged if they come into contact with metal on the typewriter (see secondary picture).
So, for instance, if "Pin 3" on "Side A" has 9 alphanumeric symbols associated with it, then the PCB that represents "Side A" should have 9 connected wires of about 12" running off of it.
And to these 9 wires (electrically connected on the PCB) you would then connect the wire from your hacked keyboard that represents "Pin 3" of "Side A".
Essentially, all of these 9 wires would need to be connected to "Pin 3."
So..... when you're done, each board should have one wire running off of it for every typewriter key you plan on using.
They should be a mess of wires, as seen in my picture.
Another thing to consider is that some PCBs have holes in them to connect them to stands. I connected mine to a small acrylic stand. I did this so that none of the soldered connections accidentally get bridged if they come into contact with metal on the typewriter (see secondary picture).
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