[Noisebridge-discuss] computer interfacing

[Jonathan Foote]

One more option if you are down with some microcontroller hacking:

Get a AVR usb dev board (AT90USBKEY2, $30 at the usual places), and
with the LUFA open-source USB stack, you can make the board look like
a USB HID keyboard (or mouse, or...) such that any input pin change
can generate any arbitrary key events you want. No drivers, no hassle,
should wake up a sleeping box just like a regular USB keyboard.

On Sat, Nov 13, 2010 at 11:38 AM,
<travis+ml-noisebridge at subspacefield.org> wrote:
> So, I've often wondered what the best way to control a computer with
> simple NO/NC inputs would be.
>
> I used to rig buttons and such to the parallel port.
>
> But computers don't have parallel ports much any more.
>
> I also used to hook them to RS-232 ports.
>
> But those are going away too.
>
> So what's left?
>
> Last I heard, several years ago, the USB drivers were still somewhat
> flaky.  Is it better now?
>
> Also, HOW exactly do I hook up to USB?  With parallel it was just some
> passive circuits.  (Perhaps the answer here is "use Arduino")
>
> And, finally, how do I avoid polling loops?  (Perhaps again the
> answer is "use arduino").
>
> And, for low-power scenarios, is there any obvious way to make a
> system that waits in a very low power mode, then wakes up on certain
> events?
>
> Things that come to mind are rigging something to soft power-on (can
> this be done on a laptop?) or Wake-on-LAN (but that requires something
> capable of sending custom ethernet packets, which itself might consume
> a fair amount of power).
> --
> Good code works on most inputs; correct code works on all inputs.
> My emails do not have attachments; it's a digital signature that your mail
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