Automatic Volume Adjuster for LOUD MOVIE MUSIC

In this project I will solve one of the biggest problems I have with modern movies. The problem is that the conversation volume is way too low in comparison to the music volume. That is why I combined an Arduino microcontroller with a microphone and an IR LED in order to create an automatic volume adjuster. It basically detects when loud movie music starts playing, lowers the volume and then brings the volume back up when the music is over. Let's get started!

Here you can find a parts list with example seller (affiliate links):

LiPo Battery: https://s.click.aliexpress.com/e/_ASwccg

https://amzn.to/3EcECjz

Charge/Protect board: https://s.click.aliexpress.com/e/_d7ZzZsT

https://amzn.to/3AagCuT

Switch: https://s.click.aliexpress.com/e/_9AUg2y

https://amzn.to/2Xb67ZD

3.3V regulator: https://s.click.aliexpress.com/e/_AAYr2o

https://amzn.to/3kaAwQR

Capacitors: https://s.click.aliexpress.com/e/_dU4FEsB

https://amzn.to/3llj23v

Resistors: https://s.click.aliexpress.com/e/_dTPpXjt

https://amzn.to/3lmbRIy

Electret Mic: https://s.click.aliexpress.com/e/_AP8fDA

https://amzn.to/3zeyovE

OpAmp: https://s.click.aliexpress.com/e/_dTvJRGw

https://amzn.to/3AcMD5p

Potentiometer: https://s.click.aliexpress.com/e/_A7tN0k

https://amzn.to/3EqTevR

Arduino Pro Mini: https://s.click.aliexpress.com/e/_AmcdA0

https://amzn.to/3C7vBq3

IR LED: https://s.click.aliexpress.com/e/_AMJj6s

https://amzn.to/3nv06Sy

Red LED: https://s.click.aliexpress.com/e/_dV63r7D

https://amzn.to/3hyj07j

Here you can find the schematic of the project along with pictures of my finished board. Use them as a reference when building your own.

Here you can find the code for the Arduino. Upload it with an FTDI breakout board. Make sure to use the 3.3V 8MHz setting.

You also need to download this library:

https://www.arduino.cc/reference/en/libraries/irremote/

You did it! You just created your own Automatic Volume Adjuster for LOUD MOVIE MUSIC!

Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook and Twitter for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab