Forum Thread: Two Tone Doorbell Using IC 555

Saw someone selling a two tone buzzer on Aliexpress for $10. Immediately my brain said, are you serious?
Just by investing a little bit of your time and enthusiasm you can make this circuit for under 3 dollars.

Components Used
---------------------

For this project we need:
1 x 555 Timer IC
1 x Pushbutton Switch
2 x 1N4148 Diodes
1 x 10µF Capacitor
2 x Ceramic Capacitors (103)
4 x 47K Resistors
1 x 8O Speaker

Schema
---------

Image via blogspot.com

So, this is the simple schematic of the two tone buzzer circuit using the 555 timer IC.

The Board
---------------

Image via blogspot.com

And, this is how my board looks like.
The link to the gerber file is here: scorphq.com/GrpHDD/GerberFiles/Gerber_Door_...
You can also download it from my website or my blog: diy-projects4u.blogspot.com

Assembly
-----------

Image via blogspot.com

Lets start the project by soldering the 4, 47K resistors to the board. Then, lets solder the 2, 1N4148 Diodes to the board. After that I am soldering the 2 ceramic capacitors to the board. Next, I am soldering the 10µF Capacitor followed by the base of the 555 timer IC. Finally, I am soldering the male female pin-headers to the board. It really doesn't matter what order you solder the components to the board; however, putting the small components first makes the process a bit easy.

Once all the components are in place its time to install the IC to the base, that's it all done.

Demo
------

Image via blogspot.com

By pressing the push button switch you can now produce the two tones from the 8O Speaker attached to the pin headers.

Thanks
----------

Thanks again for checking my post. I hope it helps you.
If you want to support me subscribe to my YouTube Channel: youtube.com/user/tarantula3
Video: youtu.be/OnCv5mf0Nkg
Full Blog Post: diy-projects4u.blogspot.com/2020/09/two-tone-doorbell-using-ic-555.html
Gerber File: scorphq.com/GrpHDD/GerberFiles/Gerber_Door_Bell_V1.zip

BTC: 35ciN1Z49Y1bReX2U7Etd9hGPWzzzk8TzF
DOGE: DDe7Fws24zf7acZevoT8uERnmisiHwR5st
LTC: MQFkVkWimYngMwp5SMuSbMP4ADStjysstm
ETH: 0x939aa4e13ecb4b46663c8017986abc0d204cde60
BAT: 0x939aa4e13ecb4b46663c8017986abc0d204cde60

Thanks, ca again in my next tutorial.

TAGS
-----

Two tone doorbell using ic555, calling bell, circuit diagram, 555 project, project idea, new electronics project idea, touch less bell, how to make, electronic project, ic 555 projects, musical bell, musical door bell, door bell

Our Best Phone Hacks

Gadget Hacks' tips — delivered daily.

Be the First to Respond

Share Your Thoughts