Musical DoorBell at Home Using 555 Timer and UM66

About: DIY Maker

Hi friends Today we are going to build a door bell circuit. So lets get started.

Teacher Notes

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


1M Resistor

1nf capacitor

47 ohm resistor

1uf capacitor

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.

Trash to Treasure

Participated in the
Trash to Treasure

Pocket-Sized Contest

Participated in the
Pocket-Sized Contest

Be the First to Share


    • CNC Contest

      CNC Contest
    • Make it Move

      Make it Move
    • Teacher Contest

      Teacher Contest