Hi friends Today we are going to build a door bell circuit. So lets get started.
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Circuit and Materials
Ne 555 timer
47 ohm resistor
8 ohms speaker
Battery holder and batteries.
Step 2: Follow the Video Tutorial
watch the video to know how to build.
My english is too bad sorry!!
If you have any quires comment below.