🚀 go-pugleaf

In <clive-2603951746070001@ctwilson.demon.co.uk> clive@ctwilson.demon.co.uk (Clive Wilson) writes:

>Hello. I am interested to know the Pin-out of a Design Keyboard and the
>format of signals which pass through the keyboard port.

>What I am looking to do is simulate the signals which occur when the
>keyboard power-on key is pressed, so that I can have an external device
>switch on my Mac LC 630 automatically without anyone needing to be
>present.

Simple.  Short pin 2 to pin 4 of the ADB connector.  To do a neat job,
maintain the short until pin 3 reaches +5 vdc.

If you unplug your mouse (with the computer off!) and look at the connector,
the bottom-left pin is pin 1, the bottom-right pin is pin 2, the top-left
pin is pin 3, and of course the top-right pin is pin 4.

Pin 1 carries the ADB signal; pin 2 is the power-key-sense line; pin 3
is +5 vdc, and pin 4 is ground.
-- 
--Rob Levandowski
  Computer Interest Floor associate / University of Rochester
  macwhiz@cif.rochester.edu     [Opinions expressed are mine, not UR's.]