Remote keyless circuit

[kene]

Pleas does anyone have ideas on how to build this circuit?

I want to build a remote to open doors and gates

 

[jpanhalt]

What distance? What frequency? What degree of security do you need? Have you considered safety laws (i.e., protection from crushing children and pets)?

In other words, why, when you can buy one for a few dollars? And maybe more to the point, why duplicate posts? What's the urgency?

John

 

[kene]

BETWEEN 25 TO 50 FT, AT 3I5MHZ, AND WITH ENCRYPTED ROLLING CODES. I HAVE TAKEN NOTE OF THAT.

 

[davenn]

BETWEEN 25 TO 50 FT, AT 3I5MHZ, AND WITH ENCRYPTED ROLLING CODES. I HAVE TAKEN NOTE OF THAT.

PLEASE DONT SHOUT

 

[jpanhalt]

This might help you get started on the rolling code design: http://ww1.microchip.com/downloads/en/DeviceDoc/41099D.pdf

Here are some pre-built receivers and transmitters: http://www.buildcircuit.com/how-to-use-rf-module-with-arduino/
Most people tend to use integrated chips, like those from Melexis, Linx, and others.

If you really want to build those circuits yourself, I suggest trying Google. Several designs popped up on a search, but you will definitely need more electronic equipment to get such circuits up and running.

An then, there is the mechanical part. Do you want to build that yourself too?

John

 

[kene]

THANKS FOR THE RESPONSE, NO I JUST WANT TO BUILD THE ELECTRICAL PART AND ADD IT TO THE DOOR.

 

[davenn]

THANKS FOR THE RESPONSE, NO I JUST WANT TO BUILD THE ELECTRICAL PART AND ADD IT TO THE DOOR.

I wont ask again
PLEASE stop typing in capitals

Dave

 

[davenn]

Have you even googled circuits for remote keyless circuits ?

it would be a really good place to start

Dave