One mouse click, 2 PC's
in [Design]
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From: Spehro Pefhany on 14 Jun 2010 09:41 On Mon, 14 Jun 2010 00:09:38 GMT, keningram(a)overden.com (Ken Ingram) wrote: >Is there any practical way that would enable me to use a single mouse >click in order to start a sequence at exactly the same time on two >separate PC's (identical units)? > >I suppose this means hacking into the mouse lead itself, but how to >find the relevant wires? > >Ken Ingram You could take two cheap mice apart and wire a DPST momentary switch with one Normally Open (NO) contact across each "click" switch (left or right, whatever) and then you can position each mouse cursor where it should go then hit the "double click" pushbutton. It won't be "exactly" at the same time, but pretty close by PC standards. You won't be able to easily accomplish anything useful fiddling with the wires leading directly to the mouse. An alternative would be to use devices called "wedges".
From: Archimedes' Lever on 14 Jun 2010 10:12 On Mon, 14 Jun 2010 09:41:01 -0400, Spehro Pefhany <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >On Mon, 14 Jun 2010 00:09:38 GMT, keningram(a)overden.com (Ken Ingram) >wrote: > >>Is there any practical way that would enable me to use a single mouse >>click in order to start a sequence at exactly the same time on two >>separate PC's (identical units)? >> >>I suppose this means hacking into the mouse lead itself, but how to >>find the relevant wires? >> >>Ken Ingram > >You could take two cheap mice apart and wire a DPST momentary switch >with one Normally Open (NO) contact across each "click" switch (left >or right, whatever) and then you can position each mouse cursor where >it should go then hit the "double click" pushbutton. > >It won't be "exactly" at the same time, but pretty close by PC >standards. > >You won't be able to easily accomplish anything useful fiddling with >the wires leading directly to the mouse. > >An alternative would be to use devices called "wedges". > > Would it not be easier to simply jump online and DL the spec sheet for the interface involved? D'oh!
From: Nobody on 14 Jun 2010 10:52 On Mon, 14 Jun 2010 00:09:38 +0000, Ken Ingram wrote: > Is there any practical way that would enable me to use a single mouse > click in order to start a sequence at exactly the same time on two > separate PC's (identical units)? > > I suppose this means hacking into the mouse lead itself, but how to > find the relevant wires? Communication (whether PS/2 or USB) between a mouse and a PC is two-way, so you can't just "fork" the wires. You would need to use two mice, sharing a common switch. Even then, you may find that the two PCs are slightly out of sync due to latency in processsing the clicks.
From: AZ Nomad on 14 Jun 2010 11:03 On Mon, 14 Jun 2010 04:59:42 -0700, Archimedes' Lever <OneBigLever(a)InfiniteSeries.Org> wrote: >On Mon, 14 Jun 2010 06:17:36 -0400, JW <none(a)dev.null> wrote: >>On Sun, 13 Jun 2010 21:08:50 -0700 Archimedes' Lever >><OneBigLever(a)InfiniteSeries.Org> wrote in Message id: >><3qab16l70s0s0pn9rqoa5ull13dlspi8tp(a)4ax.com>: >> >>>On Sun, 13 Jun 2010 20:34:22 -0500, AZ Nomad >>><aznomad.3(a)PremoveOBthisOX.COM> wrote: >>> >>>>On Sun, 13 Jun 2010 18:20:24 -0700, Artemus <bogus(a)invalid.org> wrote: >>>> >>>>>"Ken Ingram" <keningram(a)overden.com> wrote in message >>>>>news:4c157293.3891718(a)news.tpg.com.au... >>>>>> Is there any practical way that would enable me to use a single mouse >>>>>> click in order to start a sequence at exactly the same time on two >>>>>> separate PC's (identical units)? >>>>>> >>>>>> I suppose this means hacking into the mouse lead itself, but how to >>>>>> find the relevant wires? >>>>>> >>>>>> Ken Ingram >>>> >>>>>Even if you succeed with the wiring the sequence start isn't going >>>>>to be that exact as the mouse is a polled device. >>>>>Art >>>> >>>>Actually, it isn't. >>> >>> Mice are polled devices. >> >>AlwaysWrong. PS/2 mice use an interrupt. You big dummy. > Do interrupts not also get polled in cyclic fashion? Can you guarantee >that both machines will poll their respective interrupts at the same >moment? Interrupts aren't polled. Don't you even know the english word "interrupt"?
From: Archimedes' Lever on 14 Jun 2010 11:31
On Mon, 14 Jun 2010 15:52:10 +0100, Nobody <nobody(a)nowhere.com> wrote: >On Mon, 14 Jun 2010 00:09:38 +0000, Ken Ingram wrote: > >> Is there any practical way that would enable me to use a single mouse >> click in order to start a sequence at exactly the same time on two >> separate PC's (identical units)? >> >> I suppose this means hacking into the mouse lead itself, but how to >> find the relevant wires? > >Communication (whether PS/2 or USB) between a mouse and a PC is two-way, >so you can't just "fork" the wires. > >You would need to use two mice, sharing a common switch. Or mechanical switch actuator (a pair of fingers). >Even then, you may find that the two PCs are slightly out of sync due to >latency in processsing the clicks. Somebody finally got it right. It would not be much, but he did not specify how much "at the same time" resolution he wanted. |