Awesome Electronics Tutorials, Projects and How To´s
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GreatScott! · Publicado el 26 de septiembre de 2021
Visit Brilliant.org and get a 20% discount: https://Brilliant.org/GreatScott/ Previous video: https://youtu.be/15HmW1K8MZY Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (schematic, code, pictures,.....) on Instructables & Patreon: https://www.instructables.com/Automatic-Volume-Adjuster-for-LOUD-MOVIE-MUSIC/ https://www.patreon.com/posts/56653728 Parts list (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 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! Websites which were shown in the video: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP1700-Low-Quiescent-Current-LDO-20001826E.pdf http://www.advanced-monolithic.com/pdf/ds1117.pdf Thanks to Brilliant.org for sponsoring this video. Music: 2011 Lookalike by Bartlebeats 0:00 The problem with movie music 1:20 Intro 2:17 Volume control + sound measurement 3:06 Hardware design around uC 5:26 IR codes for volume 5:39 ADC settings for audio sampling 6:23 Algorithm for detecting loud movie music 8:21 Arduino code 9:10 Final test & verdict
