controller workshop materials:
slides: https://drive.google.com/file/d/1JG1d9o2luC-Y9ppsf7I8cZ2tQrL9qrhy/view?usp=sharing
codes:https://github.com/andproto/controlv1/
links:
https://processing.org/
https://www.arduino.cc/reference/en/language/functions/usb/keyboard/
https://deskthority.net/wiki/Arduino_Pro_Micro#:~:text=The%20Pro%20Micro%20is%20an,number%20of%20pins%20would%20suffice.
online instrument:
https://patatap.com/
http://sampulator.com/