ADB power switch for testing?

[EvieSigma]

Has anyone ever made a switch that plugs into the ADB port and imitates a keyboard power button for testing systems that require a keyboard to turn on?

 

[Themk]

I did, once... Wasn't all that useful as almost all ADB keyboards have power buttons on them.

 

[EvieSigma]

Well this would be for if you don't have a keyboard handy...

 

[Themk]

Yeah that is true, but I am swimming in ADB keyboards, soooo...... Anyway, it isn't all that difficult to build. Take a donor S-Video cable, cut one of the ends off, and solder a switch to the wires that correspond with the pins in the connector on the mac end.

 

[EvieSigma]

So there's pinout diagrams out there? Okay.

 

[Themk]

Yup. This page should give you all the info you need on the pinout:

http://pinouts.ru/Slots/apple_adb_pinout.shtml

 

[Trash80toHP_Mini]

Momentary switch.

 

[EvieSigma]

Okay, looking at that diagram, do I only need the 5V and ground lines?

 

[Themk]

As jt pointed out use a momentary switch.

Short pin 2 (the power switch pin) to ground, If I remember correctly.