7 Commits

Author	SHA1	Message	Date
Dave	14248df6fe	mechanical fit and buildability fixes ... - Moved header slightly forward - Moved interface mount holes do reduce interference with case mount holes - For all keys in classic keyboard, add option for either through-hole or SMT diodes and resistors.	2020-06-23 17:21:38 -05:00
Dave	59f7eb9896	Completed routing on OSI interface board ... Cleaned up and fixed schematics	2020-05-27 12:22:58 -05:00
Dave	1d2ccf8727	Update PCB to latest schematic	2020-05-21 13:51:19 -05:00
Dave	9482a3bf0e	Adjustments for OSI RESET and shiftlock circuits ... - adjust RC constants to use simple, common values and reduce number of different part values. - Create add-on PCB to provide reset/shiftlock function for older 542 and SB2 keyboards.	2020-05-21 13:48:38 -05:00
Dave	32e74986c5	More special keys and other circuit cleanup.	2020-04-27 17:16:08 -05:00
Dave	01f57f69e1	Circuit tweaks ... - Add power-on reset to reset circuit - Modify Shiftlock circuit to require only one jumper	2020-04-23 11:27:54 -05:00
Dave	5fa0f80b4e	Add OSI interface schematic ... Provides a keyboard interface to interface with OSI computers. Equivalent to an OSI 542C. - Includes sound circuits - Includes RESET delay circuit - SHIFT LOCK can be mechanical push-on/push-off or soft toggle, selectable by jumper. - Provide SHIFT LOCK LED output.	2020-04-21 14:30:59 -05:00