piclist 2000\05\27\022923a >
Thread: Advice needed ==>PIC to PIC wireless transmission
www.piclist.com/techref/microchip/devices.htm?key=pic
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face BY : Dan Mulally email (remove spam text)



----- Original Message -----
From: "Gerard Mantoux" <spam_OUTGerard.MantouxspamKILLspamBULL.NET>
To: <KILLspamPICLISTEraseMEspamKILLspamMITVMA.MIT.EDU>
Sent: Tuesday, May 23, 2000 2:02 AM
Subject: Advice needed ==>PIC to PIC wireless transmission


> Hello, dear PICListers,
> I need advices, concerning one way wireless transmission of data between
two PIC
> 16F84 (short range, 10-20 meters)
> My project :
> Outside: an autonomous weather station (Wind speed, temperature and rain
gauge),
> using a PIC 16F84, and powered by solar cells and battery.
> Inside :a terminal part that uses a PIC 16F84 too with LCD display.
> I plan to use a one way wireless transmission between the two 16F84, using
> 432MHz commercial modules : (1 time per minute, emitter on the station,
receiver
{Quote hidden}

only
> (not tested)
>
>  [Gerard Mantoux           email: RemoveMEgerard.mantoux@spam@spambull.net
>  Bull S.A.   38, Route de Versailles    tel: (33) 01 39 66 50 90
>  78430 LOUVECIENNES, France        fax: (33) 01 39 66 67 94
>  OPINIONS ARE MY OWN & DO NOT NECESSARILY REFLECT BULL POLICIES]

Usually that's done with ASK, amplitude shift keying. This is what most
garage door openers use. The transmitter can be done with one transistor
oscillator which is keyed on and off by the data. The receiver is a bit more
complex but still not too bad. Most receivers are super regenerative. I'm
not sure off hand where to find plans but you could buy a cheap remote
on/off switch from Radio Shack and copy it. Digi-Key also has some remote
control stuff made by Ming Microsystems.

Dan Mulally

<005301bfc7a4$68bf6180$650c22d0@computer> 7bit

See also: www.piclist.com/techref/microchip/devices.htm?key=pic
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Subject (change) Advice needed ==>PIC to PIC wireless transmission

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