RE: IR Question

[ian.bird@xxxxxxx]

Hi Stuart

I will look tonight as it is a long while since I did these boards.
I'll
let you know.

Ian

Ian Bird
CibaVision UK Ltd.
Direct dial 01489 775570
Fax           01489
779570


                                                                                                                                
                     
Stuart
Whyte                                                                                              
                     
<lists@futureflat       
To:       "'ukha_d@xxxxxxx'"
<ukha_d@xxxxxxx>                    
                     
.org>                   
cc:                                                                              
                                              
Subject:  RE: [ukha_d] IR
Question                                               
                     
22/10/02
15:30                                                                                            
                     
Please respond
to                                                                                         
                     
ukha_d                                                                                                    
                                                                                                                                
                                                                                                                                




Great thanks Dan,

Do you recommend a part number for said NPN transistor, that I can get
from
Maplins??  Also, remind me of the URL for the circuit to get Autom8it
to
learn the IR Commands.  Can these go on the same COM port??

Ian, am I right in saying that R7 is the bus terminal on the TX board??

Cheers

S.

> -----Original Message-----
> From: Dan [mailto:dtoma@xxxxxxx]
> Sent: 22 October 2002 15:22
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] IR Question
>
>
> > The extender I use is here:
> http://www.geocities.com/nigelorr/ir_extend.html
>
> I see it... so you can go directly to the bus from the serial
port.
>
>
> >> You can take the signal from the DTR pin and using a
single
> >> transistor with
> >> the collector connected to the output of the IR receiver
IC
> >> (TSOP 17xx or
> >> similar). This is all.
>
> > Could you explain this a bit more? I'm looking to make the
> PC transmit to
> > the bus
>
> Ok.. now that I have seen your interface, this is what you must
do:
>
> - from the DTR line on the COM port through a 10K to 22K
> resistor go to the base of a NPN transistor (any type).
> - connect the transistor emitter to the ground (together with
> the pin 5 of the COM port);
> - connect the transistor colector to the left pin of R7 (2K)
> from your schematic.
>
> ..and.. this is all.... don't forget to put the application
> in DTR mode (TxD checkbox unchecked)
> So all you need is a NPN transistor and a 10K to 22K resistor...
>
> > I really want to take the optical part out of the equation
>
> Now is out..:-)))
>
> Dan
>
>
> [Non-text portions of this message have been removed]
>
>
> ------------------------ Yahoo! Groups Sponsor
> ---------------------~-->
> 4 DVDs Free +s&p Join Now
> http://us.click.yahoo.com/pt6YBB/NXiEAA/jd3IAA/IBOolB/TM
> --------------------------------------------------------------
> -------~->
>
> http://www.automatedhome.co.uk
> Post message: ukha_d@xxxxxxx
> Subscribe:  ukha_d-subscribe@xxxxxxx
> Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> List owner:  ukha_d-owner@xxxxxxx
>
> List of UKHA Groups here -
> http://groups.yahoo.com/group/UKHA_Grouplists/
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
>

**************************************************************
Franklin + Andrews is a business name of Franklin & Andrews Limited
(Registered in England No 4408389), whose registered office is at St
Anne
House, Wellesley Road, Croydon, CR9 2UL

This email message and accompanying data transmitted with it are for
the
sole use of the intended recipient(s) and may contain information that
is
confidential. If you are not the intended recipient(s), you are
notified
that any use, dissemination, disclosure, distribution or copying of
this
message or data is prohibited.  If you have received this email
message in
error, please notify us immediately and erase all copies of this
message
and attachments.


[Non-text portions of this message have been removed]



http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:  ukha_d-subscribe@xxxxxxx
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
List owner:  ukha_d-owner@xxxxxxx
List of UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Yahoo! Groups Sponsor

ADVERTISEMENT

http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx 
Subscribe:  ukha_d-subscribe@xxxxxxx 
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx 
List owner:  ukha_d-owner@xxxxxxx
List of UKHA Groups here - http://groups.yahoo.com/group/UKHA_Grouplists/

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.