The reed switch and the corresponding magnet on the door ensure that the delay timer is activated only while the door is perfectly at the center of the door frame and is stable. How the Delay Timer is Activated with Reed Switch
However in the shown circuit design, the specified delay operation is controlled by two parameters, 1) the reed switch, and the opto coupler IC (with the attached BC547 transistor). Normally the delay timer is supposed to operate the relay after some delay as soon as the circuit is powered with an input supply of 12V.
The circuit shown above is a simple delay ON timer circuit using T1, T2, R2, C2 as the main components. The basic electro-mechanical configuration for the door could be done as indicated in the following diagram Mechanical Details of the Door Instead, a vertically hanging type of door (hinged at the upper edge) would be much easier to tackle and equip with the required electronics. For example a sideways opening door or a sliding type of door could be quite complex to configure. The preferred door specification for this project should be such that it does not require a complex opening or closing operations. The proposed electronic dog door circuit or electronic door circuit for pets can be easily built using a simple electromechanical lock set-up and a homemade Rf transmitter, receiver circuits. I sure hope that you can help us to design a locking door system.The ones available have a small pendant or tag the dog wears on his/her collar and the door will only unlock when the pendant is near the door.Unfortunately, we cannot afford the $250+ USD the electronic ones cost.
Automatic dog door install#
I can install a new doggie door to replace the old one there, but I want it to be able to lock and unlock as the dogs get near it.However, since it doesn't lock she has come home twice to find the neighbor's dog in her house (he dug under the fence into her yard and then ran in the unlocked doggie door.My girlfriend has two dogs and they use a doggie door on the back of her house to get in and out.I have a new "pet" project (excuse the pun please).We are getting almost no false triggers and the RF system is sending perfect signals at a range of over 1150 yards (over 1km). We are able to now know if someone crosses the main bridge that approaches his driveway.I just wanted to let you know the wireless 12v battery PIR long distance home security alert system we put up at my friends rural property is working great.
0 kommentar(er)
