Re: Re: ir transmitter some success

["Frank Mc Alinden" <armagh@xxxxxxx>]

Hi Andy
            Isnt
it  brill when things go right .Your doing great. Good idea
about the Basic Stamp. I spent all day yesterday frustrated . You
wouldnt
learn much if everything went right ,its when it goes wrong thats when
you
learn. Did you post your photos on Marks Website ? if so how?
Good Luck

Frank Mc
----- Original Message -----
From: "andy_powell_is" <ukha@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Sunday, June 02, 2002 7:18 PM
Subject: [ukha_d] Re: ir transmitter some success


> Good stuff Frank... at the moment I am just using this to learn,
in
> the end I'll probably end up using one of the designs from you
> experts...
>
> I've had a little brainwave here too... before connecting to
> Homevision I'm actually going to sacrifice a basic stamp.. (well
> sacfrifice is'tn the right word as it SHOULD be ok afterwards)..
>
> The Basic stamp can cope with 30ma max per pin and 60ma per 8
pins..
> which means if i create a fake homevision using the basic stamp I
can
> certainly check on the current draw before the final connection..
>
> Obviously this is the final test before connecting to homevision..
> before all that I need to take some measurements.... but I have
> transferred the first bit from  breadboard to stripboard... :D
:D
>
> and it works!! :D .. I'm just using this one really as
layout...and
> testing, I need to compress  it really...
>
> I also think I have got it down to about 512ma total of 8 X 9 leds,
i
> think by chance I managed to get some sensitive ir emitter leds I
> need to double check but I think I can get away with 600ohm
(possibly
> more as the emitters will be right beside the internal IR receiver
of
> any kit) resistors for them and the visible leds have 3.9k
resistors
> and are still fairly bright... (again all by chance)
>
> Part numbers for farnell are:
>
> 178301 Ir Emitter
>
> (farnell datasheet http://www.farnell.com/datasheets/5344.pdf
)
>
> 3013900 yellow led
>
> (no datasheet at farnell but it is at www.marl.co.uk  marl part
no
> 352-582-20 )
>
> Andy
>
>
> --- In ukha_d@y..., "Frank Mc Alinden" <armagh@b...>
wrote:
> > Hi Andy , Ian + Ian
>
>                            
Had some success today with the 8 zone
> ir controller . I decided to bypass the opto connected to incoming
ir
> signal from Hv to confirm my suspicions. Tried it again and it
worked
> but only with two ir leds inserted in the Zone Splitter . Looked
at
> my schematic and realised it was slightly different to my homebrew
> circuit. In my homebrew unit the driver transistors were connected
> common emitter but my new circuit was common collector .Re did the
> driver transistors and tried again. Now works with all 8 ir leds
in
> Zone Splitter on all Zones . The range is approx 15ft and i
monitored
> the current which was approx  5mA . I set up my Hv ports thru
the
> control menu rather than a macro at this stage just to confirm my
> hardware was connected ok. Would still like to use opto isolation
on
> the incoming ir ,will order something from rs components. Now must
> update my drawing before i forget.
> >
> > Frank Mc
>
>
>
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