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| Custom Keyboard pg4 |
| It
took a while to find the DPDT (or DPST) switches I needed, I know have
some on the way, in the mean time I decided to make a Printed Circuit
Board because of the amount of wiring required. I will make the board after I get the switches to make sure everything fits, but just to see if the wiring would work I started drawing. To make it more legible I downloaded a number of schematic programs to help me, but my plan is too complex for them, so I drew my own using Express PCB editor. (free but is designed so you can buy PCBs from their company.$$$!) |
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| It
is mostly straight forward, the ribbon cable attaches to the solder
pads at the top, despite the ratnest, I still need about 6 jumpers to
cross the CB but I can live with that. The one bottleneck at the
upper middle may have to be changed, and another jumper added, in case
I don't have enough room. As I am typing I just noticed an
error, a trace is missing at the numeric keypad. That is it for now, I will utilize the trackball mouse's CB for that part. When it gets done I will post the finished pictures. |