Automatic door sensor

Hi

Any idea what Sensor could have been used to read

PetSafe Electronic SmartKey for PetSafe Electronic SmartDoor

So that I can make similar in Arduino

the doc states "Uses RFID technology to send a signal to the SmartDoor to lock and unlock the flap"

so it seems to be... RFID

Go to the search box at the upper right of the forum. Type "pet door".

The ad also states: "NDOOR AND OUTDOOR ACCESS: Uses RFID technology to send a signal to the SmartDoor to lock and unlock the flap;".

The question is "which part do you wish to duplicate"?
Paul

It appears to have more than 5 cm range. Wonder what is the smart key which is used

Look for ISO11784/5 FDX-B

there is a battery in the small enclosure as well as in the door - so it's an active RFID tag, that's probably what helps with distance.

PET tags (often EM4305) that are put under the skin are usually using the 125KHZ/134.2KHZ band

The VERY FIRST requirement for reverse engineering anything is to have a working device you are attempting to duplicate. So, are you actively beginning to reverse engineer the devices or what?
Paul

Have you searched the forum yet? Dog doors come up about once a week here...

1 Like

Here is mine …

Reed switch on each side of the door , triggered by the magnet on the door catch .
These are wired to a car type remote ( see eBay) in the black box , which sends the signal to a remote receiver /Arduino in the garage which works out what has happened ( based on the order of switches firing , as the door can bounce back ).
I log the results !

Door is a commercial one working off the chip in the cars neck - I was unable to find enough info to use that ( frequency, data format etc) , cheaper in the long run …

I would prefer this. But wonder what could be the reader and its range between reader and tag

I would prefer this. But wonder what could be the reader and its range between reader and tag

I don't know what RFID technology they use. I assumed it's following that ISO11784/5 FDX-B norm since it's for pets.

In the past I've played with Texas Instrument USB MRD2EVM evaluation kit

(google translate might help you read some of my findings here lecture de tags rfid dans un pilulier de lait (agroalimentaire) - #74 by lankron )

With the provided Antenna I could see the small tags at 7/8cm and the larger round tag at 15cm. All those tags were passive. An active tag (not sure where to find one) would definitely provide more range

it's not cheap though...

There are other RFID technologies using different frequencies (look for rc522 or more capable PN532 for example)

Well on the other than please see this. I would like to make one of this wired to Arduino so i can activate door. This would be super simple and easy. But this is wifi. How can I make a wired one like this

I don’t know this - seems like a door bell and someone has to go open the door