Ir info
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I need to know how far, in feet that IR light can be sent and detected, when
used in
sunlight. I need an RX and TX unit that will be able to do this, Does anyone
know of ready
made units. I only need to check for a break in the beam, then check the second
beam for a
break calc. the speed.
used in
sunlight. I need an RX and TX unit that will be able to do this, Does anyone
know of ready
made units. I only need to check for a break in the beam, then check the second
beam for a
break calc. the speed.
Comments
Just an idea: Could you use garage-door interference detectors? They're
very reliable over 10 feet or so... and probably cheap enough at building
supply stores.
At 02:49 PM 3/14/00 -0800, you wrote:
>I need to know how far, in feet that IR light can be sent and detected,
when used in
>sunlight. I need an RX and TX unit that will be able to do this, Does
anyone know of ready
>made units. I only need to check for a break in the beam, then check the
second beam for a
>break calc. the speed.
Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
Manufacturer of the famous BOB-II Serial Video Text Display Module!
thanks
Mike Hardwick wrote:
>
> Larry,
>
> Just an idea: Could you use garage-door interference detectors? They're
> very reliable over 10 feet or so... and probably cheap enough at building
> supply stores.
>
> At 02:49 PM 3/14/00 -0800, you wrote:
> >I need to know how far, in feet that IR light can be sent and detected,
> when used in
> >sunlight. I need an RX and TX unit that will be able to do this, Does
> anyone know of ready
> >made units. I only need to check for a break in the beam, then check the
> second beam for a
> >break calc. the speed.
>
> Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
> Manufacturer of the famous BOB-II Serial Video Text Display Module!
>
>
>
> eGroups.com home: http://www.egroups.com/group/basicstamps
> http://www.egroups.com - Simplifying group communications
If you need to go 100 feet in sunlight, I would suggest a modulated laser
diode source, and a detector that senses the only the AC component of the
beam...
Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
Manufacturer of the famous BOB-II Serial Video Text Display Module!
safe or could
it hurt your eyes, say someone sat there looking into the sending unit.
Mike Hardwick wrote:
>
> Larry,
>
> If you need to go 100 feet in sunlight, I would suggest a modulated laser
> diode source, and a detector that senses the only the AC component of the
> beam...
>
> Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
> Manufacturer of the famous BOB-II Serial Video Text Display Module!
>
>
> -- Check out your group's private Chat room
> -- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
You may have seen this before, but Rentron's "Fire Stick" is a very good IR
tx/rx with 100' range. I have one & am impressed with its solid indoor
communication. I have not tried it in sunlight, but it may have a chance.
It uses a Holtek coder & decoder and gives a "valid transmission" bit on
receipt of a good signal. If you email Bruce Reynolds, he may have info on
outdoor performance. Since its normal usage is pulsed mode, Bruce may have
a recommendation for your application.
Ray McArthur
Original Message
From: LarryGaminde <lgaminde@t...>
To: 1 BASIC STAMP <basicstamps@egroups.com>
Sent: Tuesday, March 14, 2000 5:49 PM
Subject: [noparse][[/noparse]basicstamps] IR INFO
> I need to know how far, in feet that IR light can be sent and detected,
when used in
> sunlight. I need an RX and TX unit that will be able to do this, Does
anyone know of ready
> made units. I only need to check for a break in the beam, then check the
second beam for a
> break calc. the speed.
>
>
> -- Check out your group's private Chat room
> -- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
>
>
Thanks. Iin fact
I looked at there fire stick about three or four days ago, Man I getting so I
can't remember
what I had for breakfast, or did I.
rjmca wrote:
>
> Larry:
>
> You may have seen this before, but Rentron's "Fire Stick" is a very good IR
> tx/rx with 100' range. I have one & am impressed with its solid indoor
> communication. I have not tried it in sunlight, but it may have a chance.
> It uses a Holtek coder & decoder and gives a "valid transmission" bit on
> receipt of a good signal. If you email Bruce Reynolds, he may have info on
> outdoor performance. Since its normal usage is pulsed mode, Bruce may have
> a recommendation for your application.
>
> Ray McArthur
>
>
Original Message
> From: LarryGaminde <lgaminde@t...>
> To: 1 BASIC STAMP <basicstamps@egroups.com>
> Sent: Tuesday, March 14, 2000 5:49 PM
> Subject: [noparse][[/noparse]basicstamps] IR INFO
>
> > I need to know how far, in feet that IR light can be sent and detected,
> when used in
> > sunlight. I need an RX and TX unit that will be able to do this, Does
> anyone know of ready
> > made units. I only need to check for a break in the beam, then check the
> second beam for a
> > break calc. the speed.
> >
> >
> > -- Check out your group's private Chat room
> > -- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
> >
> >
>
>
> eGroups.com Home: http://www.egroups.com/group/basicstamps/
> http://www.egroups.com - Simplifying group communications
I have the same problem, but at least I saved this info:
http://www.rentron.com/Ser-Key.htm
Ray McArthur
Original Message
From: LarryGaminde <lgaminde@t...>
To: <basicstamps@eGroups.com>
Sent: Wednesday, March 15, 2000 2:20 PM
Subject: [noparse][[/noparse]basicstamps] Re: IR INFO
> Ray do you have Rentrons address I know I've been there but can't find it,
Thanks. Iin fact
> I looked at there fire stick about three or four days ago, Man I getting
so I can't remember
> what I had for breakfast, or did I.