The encoder boards (ATmega328P, Atmega2560, Apple2(2560) can accomodate
keyboard matrices with no diodes, by adding per-row diodes on the
encoder board. For keyboards with per-key diodes (the typical use
case), the per-row diodes are not needed, and therefore the footprints
should be shunted by default, using a special shunted diode footprint.
When diodes are installed, the shunt can be cut with an x-acto knife.
Previous board revs had the correct footprint, but somehow the regular
diode footprint was substituted on the last release of each of these
PCBS. The correct footprint has been restored.
- Replaced standard MX footprint with spacebar footprint, including stabilizers
- Fixed courtyard on MX footprints in library to avoid collisions
- Added a DIP switch variant with header position closer to pin 1
- moved option DIP switch/header to align header better with edge of PCB.
- Add combined DIP-switch/Jumper footprint to footprint library
- Fix Apple2-encoder and interface-ascii-atmega2560 schematics and PCB to use
new footprint.
- CapsLock, Line Feed LEDs and D33 were wired correctly, but oriented backwards
on PCB relative to Power and OSI ShiftLock LEDs. Fixed so Cathode is always on
the right.
- Marked Anode for all LEDs with (+) symbol.
- Offset cherry MX pads and aligners downward 0.004" from origin
- Offset futaba pads and aligners upward -0.004" from origin
- Update footprints in classic and sol-20 pcbs and aligners
- adjust mounting slots in Sol-20 aligners to match futaba or cherry offset
- Update all footprints on sol-20 keyboard and aligners
- Add soldermask clearance around cherry MX posts
- Move Cherry MX pads down 1 mil, and Futaba pads up 2 mils
- Adjust Cherry aligner footprints down 1 mil
- Adjust Futaba aligner footprints up 2 mils
- Move mounting slots up 1 mil on Cherry aligner
- Move mounting slots down 1 mil on Futaba aligner
- incorporate improved stabilizer post adapters in futaba aligner
- add slots for stabilizer posts in futaba aligner and Sol kebyoard PCB
- Move stabilizer bar bend guide to left bottom edge to facilitate bending
- Bump rev to 1.6
- in combined CherryMX/futaba footprints, moved cherry pads down 1 mil and
futaba pads up 2 mil, to reduce risk of shortin of LED pads with futaba pad.
Adjusted all aligners accordingly
- Fixed centroid for combined diode footprint and adjusted PCB placement on
classic and SOL keyboards accordingly.
- Moved SMT pads in combined diode footprint to top layer, so pick & place file
will be usable.
- changes to futaba stabilizer design. Longer post adapter passes through slots
in keyboard and aligner.
- Changed futaba post thickness gauge from board outline to a slot to improve
tolerance.
- Moved spacebar stabilizer bending guide to edge of PCB, in order to make it
more useful in bending PCBs.
- Changed Apple II mounting slots on classic keyboard from horizontal to
vertical orientation, to accommodate the different spacing offets due to the use
of spacers in angled mounting threads.
