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[DPRG] 38 Khz I/R Detectors

Subject: [DPRG] 38 Khz I/R Detectors
From: Robert L. Jordan rljordan at airmail.net
Date: Thu Jun 21 06:41:34 CDT 2001

Max. range I use is about 18". Past that it is not
real predictable, but that is using a small size IR LED.
Using a larger IR LED or several would extend the range.

Bob Jordan

-----Original Message-----
>From:	Rodent [SMTP:daweasel at swbell.net]
Sent:	Wednesday, June 20, 2001 4:18 PM
To:	dprglist at dprg.org
Subject:	Re: [DPRG] 38 Khz I/R Detectors

What kind of range can you get out of it?

BTW, got the Sumo chassis done -- time to mount sensors and code.

----- Original Message -----

> I like the Panasonic 4602 (Mouser or Digikey for $1.25 each or less.)
> It gives a low when it detects IR light that is modulated around 38K
> to 40 Khz. 3 pin package on 1/10" spacing.

> > Anyone got a preferred part they can recommend for I/R object
> detection?
> > Prefer something with minimal external circuitry if possible, other
> than the
> > oscillator for the emitters.
> >
> > Got a Sumo chassis built and need to come up with something to find
> the
> > other robot. I would prefer the Sharp modules, but they don't work
> well at
> > close range.




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