>Please post details of how you did it! (Not to thwart your potential sales
>or anything, but because I for one would find it very interesting!)

Since I'm not worried about making money off these (I am only offering 
since there may be people out there that want one, but are not 
comfortable around a soldering iron)

I just ran down to RatShack (er.. Radio Shack), and picked up a 6 foot 
S-Video cable (pn#15-1510). And a pair of momentary SPST switches 
(pn#(275-1556).

I cut the S-Video cable in half (now I can make two!), stripped the ends. 
The white pair in the cable go to pins 2 and 4 (white shield to 2, white 
center to 4). Strip down the red as well, so that you can cut the shield 
back a little from the center (you wouldn't want to accidentally short 
pins 1 and 3).

Slip a bit of heat shrink tube over the cable. Solder the two white 
cables to the connectors on the switch (use a small piece of heat shrink 
tube or electrical tape on one of the switch posts to keep the two from 
shorting accidentally). Slide the heat shrink tube up over the end of the 
switch. Shrink the tube for a nice clean end.

Plug into the ADB port... press the button... Mac boots!

On newer versions of the OS, if you press the button while the Mac is 
booted, you should get the "Are you sure you want to shut down your 
computer now" dialog. Of course, with no keyboard attached, you have no 
way of choosing Shut Down (but if this is a headless machine, you may 
have already installed something like OkeyDokey that will choose the 
default button which is Shut Down). I can't test this right now, as the 
LC520 I just made the cable for is running 7.5.5, and when I press and 
hold the switch while the Mac is booted, nothing happens (I think that 
dialog was added in 7.6 or 8.0).

I looked into parts cost to build more of these (buying a gold plated 
S-Video cable from Radio Shack is a bad idea for building many of 
these... I only did that as a one off so I didn't have to wait a week for 
parts to arrive). I can build them for $10 each including USPS shipping 
in the US. Most of that is tied up in labor (have you ever tried to 
solder a mini-din connector... they are a pain). If anyone wants to build 
their own... follow the above directions, if you want me to build you 
one, contact me off list.

-chris

<http://www.mythtech.net>


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