I sneaked this into a thread over at DT as well. Long before Christmas I got my PCB prototypes for a symmetric 60% board. Making a 60% was the first goal - the second to evaluate using a serial protocol. I don't have any PCBs at home, and unfortunately no pictures of it either, but I will take care of that tomorrow..
![Working on new symmetric stagger board. 60% case "universal" drawings? 86329-0](https://geekhack.org/index.php?PHPSESSID=hlfumi037rsu5emfsciaf3957402gssi&action=dlattach;topic=66787.0;attach=86330;image)
The keyboard uses nine
HC165-PISO shift registers to read the keys and one
TLC5947 LED driver. I think I ended up with 21 LED positions. There wasn't a lot of space around the driver..
The gap in the home row can be shifted one position to the left to support a more conventional layout. There are two sets of space bar row configurations to suit the different gap placements. (I think I also added support for the regular Filco style space bar row with a 6.25 unit space bar.)
Many, but not all switch locations are compatible with PCB mount pins. The stabilizer PCB mount holes needs to be drilled depending on the chosen layout. They interfere too much to all be drilled.
In addition to that a micro controller is needed to drive the whole thing. The Teensy fits into the Poker case under the PCB. Some wiring is then required to hook everything up. I made a mess on the one I built, but I will clean that up once everything is set, hot melt gluing the Teensy into place.
![Working on new symmetric stagger board. 60% case "universal" drawings? 86331-1](https://geekhack.org/index.php?PHPSESSID=hlfumi037rsu5emfsciaf3957402gssi&action=dlattach;topic=66787.0;attach=86332;image)
![Working on new symmetric stagger board. 60% case "universal" drawings? 86333-2](https://geekhack.org/index.php?PHPSESSID=hlfumi037rsu5emfsciaf3957402gssi&action=dlattach;topic=66787.0;attach=86334;image)
![Working on new symmetric stagger board. 60% case "universal" drawings? 86335-3](https://geekhack.org/index.php?PHPSESSID=hlfumi037rsu5emfsciaf3957402gssi&action=dlattach;topic=66787.0;attach=86336;image)