Re: [tuxdroid-user] How tuxes "see" each other?

[David B. <da...@ja...>]

On Wed, 21 Mar 2007 13:05:18 +0100, Florent THIERY <ft...@gm...>  
wrote:

> Sorry to talk again about that, but would it be possible for tux to
> trigger an action from the hub? The fish is unpowered when the
> computer is shut down, right?
>
> What i don't get is: a keyboard press can power a computer up (acpi
> bios function) when it's off. Could we do the same with the fish?
>
> For that we would need:
> - a built in timer for standalone waker functionnality (in tux) -> how  
> feasible?
> - usb keyboard press emulation on the fish
>
> But the more i think about it, the less it seems doable...

A timer is no real problem though you'll never get it accurate. Need to do  
some tests about calibration but we would have need a crystal and a real  
time clock to do such a thing.

The main issue comes from the powering, if the dongle is unpowered,  
there's no way to get connected with Tux. Can a usb keyboard wake-up your  
computer? I don't think so.

Now if we can startup the computer from a logic signal connected  
somewhere, a hack that could power the dongle separately and adding an  
output from the RF board of the dongle and a custom firmware could do the  
trick. That's something we can imagine. But to wake-up your computer at a  
certain time, you better use your bios or build a small real time clock  
that connects to the computer directly. Or use an old wakeup clock with  
the hammers and bells and stick it close to your keyboard  so the hammers  
hit it :-)