58 lines
3.2 KiB
Markdown
58 lines
3.2 KiB
Markdown
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This is a way to take a Microsoft ergonomic bluetooth keyboard, and make it
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into a hard-wired keyboard running QMK.
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The keyboard is known under several different names:
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Mobile Bluetooth 5000, Mobile 6000, Sculpt mobile, and Asus rebranded
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I had a stack of them,since they're cheap on ebay, travel well, and are just ergo enough.
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The ribbon cable is 1mm pitch, which is hard to hand solder. I bought a cheap set of
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"pitch adapter" boards https://www.amazon.com/Double-Sided-0-4mm-1-0-Adapter-60mmx38mm/dp/B00OK42118
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Cut the original ribbon cable sockets off the bluetooth board using a razor, they're hard to desolder.
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They're also allow the cable to be inserted on top or bottom.
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If I was going to do it again, I'd make the MCU connection come out the top of the keyboard
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and avoid the wires dangling out the bottom.
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As I was debugging the matrix, I started to get random failures. In desparation I tried a second MCU,
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but had the same problems. It turns out that the ribbon cable connections can get worn. Shave a
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half millimeter off the end of the ribbon cable & the errors go away.
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My method for discovering the matrix was to set up a KEYMAP macro that included all pins.
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See MATRIX_TESTING_KEYMAP if you need it. Then set up a keymap that has all printable symbols
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in the first 4 rows. test each key & record output. Then switch the printable symbols to the
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bottom 4 rows & repeat. This was enough to show the matrix.
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The full original keymap for the sculpt is
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A B C D E F G H --->
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0 b n m , . /
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1 g h "
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2 7 8 9 0 Del PgUp
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3 p [ ] \
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4 y u i o
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5 ~ - += j k l ; 5
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6 a s d q w e, Up left
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7 F7 F8 F9 F10 F11 F12 f
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-----> I J K L M N O P Q R
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0 Caps FN
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1 Vol+ mute Rctl vol- pgdn LCTL
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2 Rshift LShift
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3 Ralt LAlt
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4 LGUI
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5 6 bakspc 1 2 3 4 F4 F5 F6
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6 Down right spc F1 F2 F3 tab
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7 r t z x c v enter Esc
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This works with 18 cols + 8 rows on a Teensy++, or Arm based Teensy.
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The Astar mini has all pins exposed , so you can do 18x8
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If you want a speaker, LEDs &etc, you'll need to free up a pin. I recommend joining columns
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R and L to the same pin.
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Building - add ASTAR=1 to the compile line or leave out for teensy2++
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