How to convert your old-style Symbolics keyboard to USB
Publish date: Jun 17, 2010
Last updated: Jun 17, 2010
Last updated: Jun 17, 2010
Peter got in touch with me because he tried to follow my instructions how to convert a Symbolics keyboard to USB with his old-style keyboard and he failed. He assumed, and that was what I would have assumed, that the color coding of the internal cabling of the old and new keyboards would match, but they don't. Here is a table that shows the pinout for both keyboard types:
| New Style | Old Style | Function | Teensy Pin |
||
|---|---|---|---|---|---|
| Pin# | Color | Pin# | Color | ||
| 1 | blue | 8 | white | GND | GND |
| 2 | yellow | black | not | connected | |
| 3 | green | 2 | red | 5V | 5V |
| 4 | red | 3 | green | DIN | D4 |
| 5 | black | 1 | yellow | CLK | D5 |
| 6 | white | 5 | blue | CLR | D6 |