Re: TI-H: new schematic
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Re: TI-H: new schematic
The size of the links depend on the builder, my prototype was large to make for mods. You could put it in a small enough box to hold the parts, a PCboard isn't really necessary. I really designed this to work between
two calcs, but it can be used to link to your PC as well. It has a range of about 3.5m at the most. I am currently working on a high output version that should work at almost a 50m. Also, it does not have to be in
direct-line-of-sight. It has about a 30 degree range. It NEEDS the 5v to power the IC's, it is NOT a SPINterface project. And finally, yes the RS-232 driversc ould be used as a TI-modem basis.
Christopher Kalos wrote:
> One last thing. How small is the IR link? I want to put the whole thing in one box in order to scale down the overall design. Of course, this is only because I already have a parallel link that works well enough.
> Also, have you tested range and the like with this yet?
> And this really looks like a SPinterface project, seeing as it needs 5v input to run. Can anything be done to step that down?
> Finally, you may have set the basis for a new TI-modem setup by converting to RS232.
>
> ----------
> From: Gregory Whitmore[SMTP:gfw9941@usl.edu]
> Sent: Thursday, October 23, 1997 11:54 AM
> To: ti-hardware@lists.ticalc.org
> Subject: Re: TI-H: new schematic
>
> The manufacturer for Tx and Rx is SHARP. I don't know where the data sheets
> are on the web. If I find them I will let you know. If can't find them I
> will scan in and post the ones that I have. I will also be changing the Maxim
> RS-232 driver to a DS275 from Dallas Semiconductor. It will aid in ease of
> wiring. You may want to go ahead and do this if your going to build one.
>
> Osma Suominen wrote:
>
> > Gregory Whitmore wrote:
> > > Well the new -readable- schematic is up on my page. I have also typed
> > > out the parts list to make that legible. The address is
> > > http://www.geocities.com/SiliconValley/Horizon/4869
> > > I am not too good with HTML, can someone help me make my pages a little
> > > better? Thanks
> >
> > You have used the parts RY5AT01 and RY5AR01 as the IR transmitter and
> > receiver module. What is the manufacturer? Do you know where I can find
> > more information (datasheets etc.) about them?
> >
> > Thanks in advance.
> >
> > -Ozone
> >
> > --
> > *** Osma Suominen *** ozone@clinet.fi *** http://www.clinet.fi/~ozone ***
>
> ------------------------------------------------------------------------
>
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