Example :
Select source 1 of a projector with address \x01.
Transmit
Start
Projector address
Command[0]
Data[0]
Checksum
Stop
Receive (acknowledge)
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
source/slot, write number
\xfe
\x01
\x31
\x01
\x33
\xff
\xfe
\x01
\x00
\x06
\x07
\xff
58