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 |
thanks, works like a charm! i also connected pin 7 to pin 9 (that's what the original connector has).
ReplyDeletedo you also have suggestions as to how to setup Xorg/OpenGenera (VLM?) so that the keyboard works well with the emulated lisp machine?
thanks for publishing this!
I have tried to make the mapping work well with the default mapping of the VLM. The complete mapping can be displayed in Genera with "Show X Keyboard Mapping". It can probably be improved, but I think one needs to modify the mapping code in Genera for that. I left that for someone else to do :)
ReplyDeleteKeep us posted if you improve on anything.
Thanks very much for this. (I found out about this from the thread on Deskthority a couple weeks back.)
ReplyDeleteI found the firmware didn't work on the Teensy 2.0 I bought, apparently because the chip is not right. I fixed that in the Makefile, and couldn't build because usb_keyboard.c didn't seem to match the headers. But the new version works.
I need to put some finishing touches on it, but this was great. Thanks for doing this!