The data was encoded of the left side of the picture. I believe there is a patent on this.
My friend, Leonardo Del Castillo invented and productized this. So, look for his name. He was the electrical engineer lead.
My friend, Leonardo Del Castillo invented and productized this. So, look for his name. He was the electrical engineer lead.
https://patents.google.com/patent/US6415439B1/en includes some aspects of the MIDI protocol in the tables; does this cover the LPC information the SWEETPEA authors couldn't figure out?
https://patents.google.com/patent/US6317714B1/en
https://patents.google.com/patent/US6281939B1/en
It doesn't look like anyone's published a reverse-engineering of the protocol.
Where does one get a 49.86mhz(??) maker-level transmitter these days?