Hello everybody.
 i'm noob in Arduino and in this forum, and in english
I have an électronic accordéon  with a câble between the instrument and the Electronic box with sounds. It's not midi protocole but the connection câble IS a midi câble. I have tested it with others module, others midi instrument in thé module and it's clear, it's not midi.
Out of thé module I have 4 pins : 1 with +12v, 1 for Shield, for thé electric système of thé accordéon (screen, etc...) the 2 others for data i suppose but with 3.2v.
I don't Know the protocol of data.
Do you think i could use two esp8266 in wifi direct client server to create a wireless connection between thé box and the instrument without knowing thé protocol ?
Do you think the latency could be low ?
Do you vive me soule advice or tutorial to easily create that ?
Thanks a lot

But the protocol is digital? It uses bits? If yes, you could just read "bit by bit" and if you detect high, you send a "1" and if you detect a low you send a "0" without knowing the protocol. The problem you might have is the frequency. Do you at least know the frequency speed of that protocol? If yopu have 2 pins for data it might be a synchronus protocol with wires for cable and clock.

Thanks for your reply.
Do you think I could find a method to listen data on a cable ? to know protocol and his frequency speed ?

For the two pins, I think it for the difference between notes and control change. One pin for keyboard and the other one for command button witch change the sound.
Do you think I could use a software on my pc and scan pins connected to a usb cable ? If pc receive 3v on usb port, is it dangerous ?

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