being new to this i'm going to assume that the bc550 listed on your diagram is like a "switch" and that when you send a signal to it it causes the bridged conection that simulates what would happen if you press a key on your keyboard? That leads me to think i would almost need 1 pin/bc550 for...
Hello, forgive me for I am just starting to get into electronics but a friend of mine has come to me to help him with a project. He's asked me to come up with a way to control a keyboard via a computer. So far I've took apart a keyboard and have tried to learn what I can about the protocols...