Need help shift register for midi note input

[flashko]

@wannabuildamidikeyboard

my goal is a 49 key keyboard, hence the shift register.

Hm, okay. Have you considered using a PS2 keyboard? If I remember correctly there is a suitable library for Arduino. Or maybe use some sort of IR remote control? For example, an IR remote control that is connected with a cable to the Arduino. So you will only need 1 pin from the microcontroller.

Reading remote control signals without IR reciever

An interesting idea. Here SB-Projects - IR Index there is very good information about IR remote control. A few years ago I wrote a short program for managing a remote control. Now I changed my code to read the signal directly from the remote control and to filter the modulation with frequency 38kHz. I use an Arduino Nano and some old 5-button remote control with NEC protocol. // Идеята е сигнала да се взима с кабел директно от дистанционното, което да се ползва като клавиатура с интерфейс по са…