Introduction: 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!
Step 1: Watch the Video!
Step 2: Order Your Components!
Here you can find a parts list with example seller (affiliate links):
LiPo Battery: https://s.click.aliexpress.com/e/_ASwccg
Charge/Protect board: https://s.click.aliexpress.com/e/_d7ZzZsT
Switch: https://s.click.aliexpress.com/e/_9AUg2y
3.3V regulator: https://s.click.aliexpress.com/e/_AAYr2o
Capacitors: https://s.click.aliexpress.com/e/_dU4FEsB
Resistors: https://s.click.aliexpress.com/e/_dTPpXjt
Electret Mic: https://s.click.aliexpress.com/e/_AP8fDA
OpAmp: https://s.click.aliexpress.com/e/_dTvJRGw
Potentiometer: https://s.click.aliexpress.com/e/_A7tN0k
Arduino Pro Mini: https://s.click.aliexpress.com/e/_AmcdA0
IR LED: https://s.click.aliexpress.com/e/_AMJj6s
Step 3: Build the Circuit!
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.
Step 4: Upload the Code to the Arduino!
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:
Attachments
Step 5: Success!
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:
