RFID for Gate Control

[BraveSirRobbin]

I built two of these circuits for both of my vehicles and they have worked flawlessly for over seven years. If this were me I would probably incorporate that methodology using a wireless security sensor of some sort or maybe even a DS10a (a little more secure than an X-10 signal since this application is opening a gate and not just notifying vehicle's arrival).

There are also inexpensive kit circuits using a keyfob and transmitter that use rolling codes where you could hack the keyfob and use that as the transmitter.

 

[heffneil]

Yeah. Im in contact with one RFID company now I just need to fill out the partner application I tried to explain it is just for me. There is another site that looks like they have a product but at $3000 per gate it just is too cost prohibitive.

 

[AlexCuster]

No - as I stated above, it doesn't trigger by light - it triggers by a transmitter hooked to your highbeams - flashing the highbeams causes it to send an RF signal.

How much $$$ are you willing to spend to avoid having to touch *anything* ?

Another option I like is one where you have a remote in the car that's rigged a little bit through a 12V relay tied to the car's ignition -- basically whenever the ignition is on, it is sending the signal as if the button is pressed. It'll be semi-short range. Whenever the car is on and within range, and a car is detected by the vehicle sensor, the gate opens. It'd work a lot like RFID but not nearly as expensive. A single receiver and a transmitter for each car would get the job done. Depending on how much you care, you might even be able to skip the vehicle sensor, and whenever the car is on and you're within range, the gate opens.

Something like this is what I was going to recommend. I've seen people even use an X10 contact or motion sensor in their car to trip the garage door when the car becomes within X10 wireless range. Doing this along side rules in the HAI you can make sure that the garage door doesn't open as you are driving away. The biggest issue here is security of the X10 wireless. It's not a perfect solution but it is inexpensive and will do what you are looking to achieve.

HTH

 

[signal15]

Read this thread:

http://cocoontech.com/forums/topic/15065-proximityrfid-sensors-that-work-directly-with-the-m1/

I used them to alert me if my garbage cans were not out on garbage night, and also had them automatically open my garage door when I came home. Somewhere in that thread, I mention that you need a replacement chip for the receiver unit and how to get it, but that's only if you're using it with an M1.