----- Original Message -----
Sent: Saturday, June 08, 2002 9:58
PM
Subject: RE: [ukha_d] ir transmitter
update
Great link for the 232 to 485 circuit. I have everything except the
opto chips so I'm off to RS on Monday. What was the RS code for the chips
you bought? I'm sure you mentioned it but cannot find it
anywhere.
Thanks
Ian
Hi all
Just a
quick update on the 8 Zone ir Transmitter prototype. Well high speed optos
arrived yesterday
(friday afternoon) got home early from work
so it was off to the shed . Who said electronics was fun ( i think i did)
well it is but sometimes frustrating as well ,i couldnt get it to
work,downloaded the data sheets from the manufacturer ,which to me was
different from what RS had in their catalogue.
Anyway today was a lot
better . Searched the web and found a schematic which used the opto im
using.
Tried and bingo it worked . Have installed
the opto and additional components into my prototype and tested with
Homevision . Have saved ir signals from my tv and dvd eg vol up and
vol down . All appears ok so the Home Vision signals are now all opto
isolated... Next is finish schematics and send off to Ian B for acrobat
conversion and then hopefully on my site....
Frank Mc
ps the circuit i looked at was a PC
(rs232) to RS485 opto isolated FULL DUPLEX CIRCUIT. It even had a picture
of the pcb .
For more
information: http://www.automatedhome.co.uk
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