RE: Infrared Transmitter

[Stuart Grimshaw <stuart@xxxxxxx>]

You might want to have a look at www.lirc.org (?). It's a Linux program,
but I think there's a windows port. either way, the general consensus is
that the circuit should work with a serial port (with a little
modification, see Nigels post from a few days ago.

On 2000.12.07 21:42:46 +0000 rj@xxxxxxx wrote:
> I would recommend building this or a similar project to anybody with
even
> the slightest interest in this field.  I have learnt so much in the
last
> weeks its amazing from reading circuit diagrams to how the 555 timer
> works,
> to how not to solder a breadboard. now all I need to do is figure out
how
> to
> add a serial port to this thing so winamp can interface as well.
>
> regards.
>
>
>
> -----Original Message-----
> From: nigel@xxxxxxx
> [mailto:nigel@xxxxxxx]
> Sent: Thursday, 7 December 2000 8:17
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Infrared Transmitter
>
>
>
> On 05-Dec-2000 rj@xxxxxxx wrote:
> > this info is perfect. thanks!!!!! will go over a few more things
> > this week
> > when I get a chance, I have got the zener diode the wrong way for
a
> > start.
>
> That should be a good thing- it will have clamped the power supply
> to the TSOP to 0.6V or so, so as long as the zener or resistor haven't
> burnt out, you should be fine!
>
> As a side note for the electronically curious, zener diodes
> work as normal diodes if you connect them normally, but they 'break
> down' in a nice way when the reverse voltage gets higher than it's
> 'zener voltage'.  The result is a fairly well regulated supply, but it
> is noisy (they're actually used as noise sources for some test
> equipment!) compared to a 7805 or the like.  Should be fine for the
> TSOP though...
>
> Nigel
>
>
>
>
>
>
>
>
>

--
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Stuart Grimshaw         www.schoolsnet.com          sg@xxxxxxx
Special Projects Developer                            t: 07976 625221
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