Here we are making an electronic doorbell circuit that makes a dual-tone sound. So this thing is designed using the well-known IC 555. That IC 555 is something we see […]
Automatic Kennel Door Circuit with Day Night Lock
This article explains a simple automatic door locking system that works when day turns into night. This clever setup is made to automatically unlock a kennel door in the morning […]
Door Buzzer Circuit
This unit is actually a two tone door buzzer of the form that generates a basic tone for around one second, accompanied by a tone of lower pitch. The result […]
Automatic Sliding Door Circuit
Automatic opening and closing doors normally don’t get much attention since they involves complex mechanisms. But still a few innovative people have attempted to set an automatic sliding door in […]
Programmable electronic Door Bell Circuit
This programmable electronic musical door bell circuit is really simple since the integrated circuit really does all the things! It should be stated that we now have created some substantial […]
Door Lock Circuit using Digital Code
In this post we try to analyze a simple door lock circuit using digital code that needs to pressed with a unique sequence in order to activate the door lock […]