A quick run-through of how I integrated my automatic microchip cat flap to my wireless Telldus home automation system.
- Cat flap automatically unlocks only for pets you have programmed it to recognize by reading the pets microchip ID tag. (sureflap stock feature)
- Pet door transmits a signal whenever the flap opens or closes. The signal is picked up by my Tellstick Net for further actions.
- The signal state can be monitored on Telldus Live web site or any compatible app for Android or iPhone.
- For Android users you have the additional bonus of customized notifications for when the cat comes in or leaves.
- …or you can have it send you an email/SMS, or turn the lights on, or ring the door bell, or toggle wifi on your phone (yes, it’s possible).
Parts list for my setup:
- Sureflap microchip pet door.
- Nexa LKCT-614 keychain remote, or any other small compatible remote.
- Tellstick Net, this is the brains of the entire home automation system.
- Bits and pieces.
I recommend you to bind the remote to your Tellstick or home automation system before you start modifying, for your convenience :) I will not cover this procedure since it’s very well described by Telldus in the manual and is a fundamental task that you should already know.
There may be many other solutions than mine that will work just as good or better. If you find a remote even smaller than the above mentioned Nexa one, you might be able to hide the remote inside the pet door casing. there are some room.
You need to make a two pole switch that connects one common wire to two other wires based on cat flap position (swinging in or swinging out). I found some flat spring type copper wire inside disposable camera for the common moving part of the switch. This is preferred because it can make contact and keep moving while bending but still return to its straight shape after the flap is back at neutral. Hopefully you will see what I mean by looking at the pictures.
The pet door is modified and transmits an on-signal when the pet comes in, and an off signal when the pet goes out.
Log on to Telldus Live and monitor your signal. It appears as before, like a light bulb turning on and off depending on if the pet door swings in or out. At this point you have the opportunity to monitor if your cat is home or outside by looking at the state of the light bulb. Install an app on your phone to make it more convenient for you to monitor.
Now it’s up to you have to take it further (pair it with a light switch receiver to welcome the cat?), but I’ll show you what I did:
- Buy an android phone and download the app AutoRemote.
- Open AutoRemote, take note of and visit your personal URL on a desktop computer.
- Click Send Notification, start customizing your notification. It may help you to have Tasker installed to see available icons.
- Click Send Notification Now! and confirm the notification pops up on your phone.
- Copy the custom URL from the blue frame on the right. This can also be pasted right into the address bar of your browser.
- Now in Telldus Live, click My Events and create two new events. Name them according to if pet is entering or leaving.
- Pay to become a premium Telldus Live user so you have the option to send SMS/email/HTTP requests on events.
- Event triggers are based on when the cat door device sets on/off. No condition parameter. Action should be a HTTP request (chain link icon)
- Paste your custom URL in the corresponding event, but remove the ‘s’ from the preceding https://. Also modify notification text according to event.
Done. Here’s some descriptive pictures.