How to make a DIY Door Alarm - Theft alert Alarm
Updated: Jul 17, 2020
In this video, I made an Anti - Theft Alarm by using very simple and easily available at the house.
Things Required -
Nuts & Long Bolt
I started by using a plywood board. Then I used a steel bowl to use as a bell and using a nut as a striker and tied a rubber band to a dc motor which will spin and strike to the bowl producing bell sound.
Now, as a ring bell mechanism is ready. You can also use a switch in the mechanism as well. Now to make a jump switch with the help of a clothespin. Then, I added a jumper wire as well to the clothespin. The mechanism works in such a way that when you pull the jump wire trigger, it will complete the circuit and ring the bell.