[Noisebridge-discuss] computer interfacing

[Gian Pablo Villamil]

Oh absolutely look at the Teensy. About $20, I think, cheaper than Arduino.
Like Tymm says, you can make it look like a keyboard or a mouse to the
computer.

On Sat, Nov 13, 2010 at 1:11 PM, Tymm Twillman <tymmothy at gmail.com> wrote:

> In the exhibit world, these are fairly common:
>
> http://www.ultimarc.com/ipac1.html
>
> -- switch-to-keyboard emulator (note that there is a USB version).
>
>
> Also, along the same lines, I *heart* Teensy's
>
> http://www.pjrc.com/teensy/
>
> which you can very easily (and in the Arduino environment) program to be a
> virtual USB keyboard.
>
>
> Also as Dr. Jesus mentioned the FTDI chips are good... and there are FTDI
> chips made specifically for parallel interfacing, and for very fast IO...
>
>
> Another option is the BitWhacker -- you can build your own or pick one up
> from SparkFun pre-programmed.
>
> http://www.sparkfun.com/commerce/product_info.php?products_id=762
>
>
> I also have friends who love LabJacks.
>
> http://labjack.com/
>
>
> and for low pin count interfacing, there's always the BusPirate
>
> http://dangerousprototypes.com/bus-pirate-manual/
>
>
> On Nov 13, 2010, at 11:38 AM, travis+ml-noisebridge at subspacefield.org<travis%2Bml-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
> > program doesn't understand. | http://www.subspacefield.org/~travis/
> > If you are a spammer, please email john at subspacefield.org to get
> blacklisted.
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