Hi Justin,
I put the circuit from the Rentron page below together and tested it in
my corporate building at night, direct line of sight, dim lighting conditions,

and was able to send my test pattern at 120ft.  The test pattern was a repeating
string of 15 characters. I tested it around the house and had
no problems in a room (not direct line of sight), I also just remebered, I
did test it outside on a cloudy day up to 75 feet, I did not try the full
range that day for some forgotten reason. If you have any other questions,
let me know.  I just got back from a short vacation and will be checking my

email again :)

Kevin

>120 ft, do I understand that you can transmit data over a IR link at a
>distance of 120feet (~35 meters).  That would be a nice solution to a
>perimeter monitor.  If you can get 120feet sending data I should be able to

>get further just detecting a signal.
>
>Justin
>
>-----Original Message-----
>From: Kevin A. Benedict [mailto:kben@dca.net]
>Sent: Wednesday, 26 December 2001 07:30
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: [EE]: What is the best way to transfer data from a portable
>device to a PC?
>
>
>>Not really, only 64K Bytes max. each time. Is the IR serial link circuit
>>complicated? Are there any low cost off-the-shelf modules available?
>
>Hi John,
>Try http://www.rentron.com/Infrared_Communication.htm
>I built this with a PIC16F628 and a 40khz module from www.Jameco.com
>part # 165008.
>I only got mine to work at 600 baud (120ft though !) reliably.
>However, Rentron sells part kits or assembled units.
>Lots of good info on the site look around.
>Their was also a recent post on powering a circuit from a RS232 port,
>I can't find it but maybe somebody on the list can point you to that.
>If you have any questions on my circuit or want to look at my code let me
>know, it's in CCS C not asm.  (www.ccsinfo.com)
>Good Luck,
>Kevin

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