_  __               _ __              _  __     _                          __  
 | |/ /__ _ _ __ ___ | /_/_ __   __ _  | |/ /   _| |__   ___ _ __ _____   __/_/_ 
 | ' // _` | '__/ _ \| | | '_ \ / _` | | ' / | | | '_ \ / _ \ '__/ _ \ \ / / _` |
 | . \ (_| | | | (_) | | | | | | (_| | | . \ |_| | |_) |  __/ | | (_) \ V / (_| |
 |_|\_\__,_|_|  \___/|_|_|_| |_|\__,_| |_|\_\__,_|_.__/ \___|_|  \___/ \_/ \__,_|
 
                                                                                                                                  
 ██████▒    ░████░   ██████▒   ████████  ████████   ░████░   ██         ██████    ░████░                                          
 ███████▒   ██████   ███████▓  ████████  ████████   ██████   ██         ██████    ██████                                          
 ██   ▒██  ▒██  ██▒  ██   ▒██     ██     ██        ▒██  ██▒  ██           ██     ▒██  ██▒                                         
 ██    ██  ██▒  ▒██  ██    ██     ██     ██        ██▒  ▒██  ██           ██     ██▒  ▒██                                         
 ██   ▒██  ██    ██  ██   ▒██     ██     ██        ██    ██  ██           ██     ██    ██                                         
 ███████▒  ██    ██  ███████▒     ██     ███████   ██    ██  ██           ██     ██    ██                                         
 ██████▒   ██    ██  ██████▓      ██     ███████   ██    ██  ██           ██     ██    ██                                         
 ██        ██    ██  ██  ▓██░     ██     ██        ██    ██  ██           ██     ██    ██                                         
 ██        ██▒  ▒██  ██   ██▓     ██     ██        ██▒  ▒██  ██           ██     ██▒  ▒██                                         
 ██        ▒██  ██▒  ██   ▒██     ██     ██        ▒██  ██▒  ██           ██     ▒██  ██▒                                         
 ██         ██████   ██    ██▒    ██     ██         ██████   ████████   ██████    ██████                                          
 ██         ░████░   ██    ███    ██     ██         ░████░   ████████   ██████    ░████░                                          
                                                                                                                                  

  
Controller

The controller uses two potentiometers and a microphone connected to an Arduino Micro.

Turning the potentiometers adjusts the galaxy’s density and the size of its stars in the visualization. Blowing into the microphone temporarily speeds up the galaxy’s rotation.