Stamp Garage Door remote
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Posts: 46,084
Heres what i'm trying to do-
I want to build a garage door transmitter using a basic stamp.
(actually part of a larger project, but thats what i have to
accomplish). I'm hoping to use 300 mhz ming transmitters to send the
security codes, since they operate at 300 mhz as do most garage door
controllers. This however is still way beyond where i am. My
original plan was to simply use a garage door transmitter connected
to the stamp. In case you don't know, most garage door transmitters
work by setting a security code (usually 9 bit), on a dip switch, and
transmitting that code. This is all fine, and works great. The
problem i ran into however was that many (maybe most) garage door
controllers use tristate dip switches (+,-, and open). My plan was
to connect the stamp's i/o pins to the connections that used to be
for the dip switch. From there i could run through every possible
combination on the i/o pins with the stamp to open the door. Like i
said, this works great with two-state transmitters, but i have no
idea what to do with the tri-state. I don't even know what the
"open" state is, let alone how to output such a state on an i/o pin.
If anyone could help me, i'd greatly appreciate it.
I want to build a garage door transmitter using a basic stamp.
(actually part of a larger project, but thats what i have to
accomplish). I'm hoping to use 300 mhz ming transmitters to send the
security codes, since they operate at 300 mhz as do most garage door
controllers. This however is still way beyond where i am. My
original plan was to simply use a garage door transmitter connected
to the stamp. In case you don't know, most garage door transmitters
work by setting a security code (usually 9 bit), on a dip switch, and
transmitting that code. This is all fine, and works great. The
problem i ran into however was that many (maybe most) garage door
controllers use tristate dip switches (+,-, and open). My plan was
to connect the stamp's i/o pins to the connections that used to be
for the dip switch. From there i could run through every possible
combination on the i/o pins with the stamp to open the door. Like i
said, this works great with two-state transmitters, but i have no
idea what to do with the tri-state. I don't even know what the
"open" state is, let alone how to output such a state on an i/o pin.
If anyone could help me, i'd greatly appreciate it.
Comments
Original Message
From: <mhilt1@t...>
To: <basicstamps@egroups.com>
Sent: Sunday, August 27, 2000 8:31 PM
Subject: [noparse][[/noparse]basicstamps] Stamp Garage Door remote
> Heres what i'm trying to do-
>
> I want to build a garage door transmitter using a basic stamp.
> (actually part of a larger project, but thats what i have to
> accomplish). I'm hoping to use 300 mhz ming transmitters to send the
> security codes, since they operate at 300 mhz as do most garage door
> controllers. This however is still way beyond where i am. My
> original plan was to simply use a garage door transmitter connected
> to the stamp. In case you don't know, most garage door transmitters
> work by setting a security code (usually 9 bit), on a dip switch, and
> transmitting that code. This is all fine, and works great. The
> problem i ran into however was that many (maybe most) garage door
> controllers use tristate dip switches (+,-, and open). My plan was
> to connect the stamp's i/o pins to the connections that used to be
> for the dip switch. From there i could run through every possible
> combination on the i/o pins with the stamp to open the door. Like i
> said, this works great with two-state transmitters, but i have no
> idea what to do with the tri-state. I don't even know what the
> "open" state is, let alone how to output such a state on an i/o pin.
> If anyone could help me, i'd greatly appreciate it.
>
>
>
>
>
>Heres what i'm trying to do-
>
>I want to build a garage door transmitter using a basic stamp.
>(actually part of a larger project, but thats what i have to
>accomplish). I'm hoping to use 300 mhz ming transmitters to send the
>security codes, since they operate at 300 mhz as do most garage door
>controllers.
<snipped for brevity>
David has answered your question, but if you like to see more on
transmitted signals and encoding them, take a look at the Ir transmitter on
the Renton site [noparse][[/noparse] www.rentron.com ]. I'm sure Bruce would be happy to
disusss what he does with the Holtek encoders. Transmission of data and/or
encoding addresses or data, is virtually the same whether Ir or RF. This,
purely as a practical matter.
Hope that helps.
Regards,
Bruce (the other one)
of schematics for 4-bit & 8-bit systems using the Holtek encoder/decoder ICs.
They are very affordable, and simple to implement. If you have any questions,
I'll be happy to help you with your project.
Regards,
Bruce Reynolds
webmaster@r...
http://www.rentron.com
Original Message
From: "Bruce Bates" <bvbates@u...>
To: <basicstamps@egroups.com>
Sent: Sunday, August 27, 2000 10:16 PM
Subject: Re: [noparse][[/noparse]basicstamps] Stamp Garage Door remote
| At 03:31 AM 8/28/2000 +0000, you wrote:
| >Heres what i'm trying to do-
| >
| >I want to build a garage door transmitter using a basic stamp.
| >(actually part of a larger project, but thats what i have to
| >accomplish). I'm hoping to use 300 mhz ming transmitters to send the
| >security codes, since they operate at 300 mhz as do most garage door
| >controllers.
|
| <snipped for brevity>
|
| David has answered your question, but if you like to see more on
| transmitted signals and encoding them, take a look at the Ir transmitter on
| the Renton site [noparse][[/noparse] www.rentron.com ]. I'm sure Bruce would be happy to
| disusss what he does with the Holtek encoders. Transmission of data and/or
| encoding addresses or data, is virtually the same whether Ir or RF. This,
| purely as a practical matter.
|
| Hope that helps.
|
| Regards,
|
| Bruce (the other one)
|
|
|
|
|
|
i plan to make a garage door for myself.Do you have
any schematics or anything thaat you could send me?
I also am a Stamp user.
Pasxalidis Pasxalis
Thessaloniki,Greece
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