Searching \ for 'RF remote for a PIC project' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: piclist.com/techref/microchip/ios.htm?key=rf
Search entire site for: 'RF remote for a PIC project'.

Truncated match.
PICList Thread
'RF remote for a PIC project'
1996\06\18@050200 by Alex Freed

picon face
PIC purists - lease forgive me. This question is only indirectly PIC
related, but what the heck - LCD displays are discussed all the time!

Here is the question. I have a project based on a PIC 16C61. The
input is connected to 3 buttons. I want to add RF remote to it. My
garage door opener seems to have exactly what I want in it - a single
chip design with a 3 button input. The problem is that I don't
recognize the chip used in it - it is marked 125C67.
Does anyone know:
1. What is this chip and who makes them.
2. Is there a place I can get ready made transmitter and receiver
modules?

I'm aware of the National Semi LM1871/LM1872 chips, but the design
seems more compicated - there are only 2 on/off channels and power
switch is separate. My remote is activated by a single contact pair
(one of three).

Thanks.

--
-Alex.

1996\06\18@081946 by Donald F. Wright Jr.

flavicon
face
At 01:52 AM 6/18/96 +0000, you wrote:
{Quote hidden}

I saw a catalog from Mouser Electronics (I think) about 3 months ago that
had little electronic kits for students to build.  Unfortunately, some of my
lacky senior friends were using these for senior projects.  Anyway, I think
that there were kits for RF transmitters and recievers.  I have a very old
catalog here and the number is (800) 346-6873.  Hope this helps.

  Donald Frederick Wright Jr.
  School info: Lawrence Technological University
  E-mail: spam_OUTDW79208TakeThisOuTspamLTU.EDU
  Work Info: AVL North America
  E-mail: .....DNWRIGHTKILLspamspam@spam@AVLNA.COM

1996\06\18@100211 by Ray Gardiner

flavicon
face
>Here is the question. I have a project based on a PIC 16C61. The
>input is connected to 3 buttons. I want to add RF remote to it.

You might like to check out RF monolithics, Dallas Texas (214) 233 2903
they have a range of low power hybrid Transmitters and Receivers. I don't
know if they have a web page?


Ray Gardiner, 104 Macintosh Street, Shepparton, Victoria 3630,  Australia
rayspamKILLspamnetspace.net.au

1996\06\18@112828 by Chris Elmquist

flavicon
face
>
> You might like to check out RF monolithics, Dallas Texas (214) 233 2903
> they have a range of low power hybrid Transmitters and Receivers. I don't
> know if they have a web page?
>
I've been down this path before !  RF Monolithics has some interesting
devices but has no interest in dealing in smaller quantities... like,
less than 10,000 units.  Samples were $50 /ea.

Please let me know if anyone discovers otherwise...

Chris

--
Chris Elmquist, N0JCF
.....chriseKILLspamspam.....n0jcf.com
EraseMEn0jcfspam_OUTspamTakeThisOuTamsat.org

1996\06\18@114116 by Odriozola Belden

flavicon
face
If you don't mind an extra chip you could use a logic gate to get three
outputs from your two outputs in the National chips. You know, signal 1,
signal 2 and both. Or better yet, have the PIC detect when both signals are
present.  A lot of three channels remote controls work this way.

Rogerio


At 01:52 AM 18/06/96 +0000, you wrote:
{Quote hidden}

1996\06\18@134346 by Mike DeMetz

flavicon
face
> 1. What is this chip and who makes them.
> 2. Is there a place I can get ready made transmitter and receiver
> modules?
>
Take a look at the MING TX/RX modules from Digi-Key. Under Holtek
stuff.

1996\06\18@172534 by Don McKenzie

flavicon
face
On Wed, 19 Jun 1996, Ray Gardiner wrote:

> >Here is the question. I have a project based on a PIC 16C61. The
> >input is connected to 3 buttons. I want to add RF remote to it.
>
> You might like to check out RF monolithics, Dallas Texas (214) 233 2903
> they have a range of low power hybrid Transmitters and Receivers. I don't
> know if they have a web page?
> Ray Gardiner, 104 Macintosh Street, Shepparton, Victoria 3630,  Australia
> rayspamspam_OUTnetspace.net.au

Try:
http://www.davetek.com/comprep/rfm.htm
More of a link that a home page, but at least they can be contacted.

Don McKenzie @spam@donmckKILLspamspamlabyrinth.net.au
DonTronics Tullamarine, Australia
http://www.labyrinth.net.au/~donmck

Picosaurus-74. The 40 pin PICBasic with 8 channels of A-D, and real Uart.
PIC Basic Compiler. Programmers from $15 US, and Pic-Axe: A New Tool.

1996\06\18@190933 by Neil Gandler

flavicon
face
On Tue, 18 Jun 1996, Mike DeMetz wrote:

> > 1. What is this chip and who makes them.
> > 2. Is there a place I can get ready made transmitter and receiver
> > modules?
> >
> Take a look at the MING TX/RX modules from Digi-Key. Under Holtek
> stuff.
>
Yes, definetly look at these. They are exactly what you need. The
Holtek serial encoder/decoder chips are perfect accessories to
the ming transmitters, e-mail me if you need any more help. One
thing about the ming transmitgters is speed 1200 baud, I wish they
had variants that could handle higher speeds. Good luck

               Neil Gandler
               KILLspamv064mb9kKILLspamspamubvms.cc.buffalo.edu

1996\06\19@090645 by Mike DeMetz

flavicon
face
> Yes, definetly look at these. They are exactly what you need. The
> Holtek serial encoder/decoder chips are perfect accessories to
> the ming transmitters, e-mail me if you need any more help. One
> thing about the ming transmitgters is speed 1200 baud, I wish they
> had variants that could handle higher speeds. Good luck
>
>                 Neil Gandler
Is that 1200 baud a limit of the TX/RX or the Holtek
encoder/decoders? I called about the bandwidth and was told
10kHz (the instructions say the baud rate is limited by the bandwidth
but they do not tell you what that is).

1996\06\19@144828 by Neil Gandler

flavicon
face
On Wed, 19 Jun 1996, Mike DeMetz wrote:

> > Yes, definetly look at these. They are exactly what you need. The
> > Holtek serial encoder/decoder chips are perfect accessories to
> > the ming transmitters, e-mail me if you need any more help. One
> > thing about the ming transmitgters is speed 1200 baud, I wish they
> > had variants that could handle higher speeds. Good luck
> >
> >                 Neil Gandler
> Is that 1200 baud a limit of the TX/RX or the Holtek
> encoder/decoders? I called about the bandwidth and was told
> 10kHz (the instructions say the baud rate is limited by the bandwidth
> but they do not tell you what that is).
>
In the digikey catalog, the max baud rate is stated as 1200 baud.

Neil

More... (looser matching)
- Last day of these posts
- In 1996 , 1997 only
- Today
- New search...