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Projector type :
All projectors equipped with a 2 line LCD.
Example :
Set a blinking cursor at position (4, 0) on the 2 line LCD
of a projector with address \x01.
Transmit
Start
Projector address
Command[0]
Command[1]
Data[0]
Data[1]
Data[2]
Data[3]
Checksum
Stop
Receive (acknowledge)
Start
Projector address
Command[0]
Command[1]
Checksum
Stop
2 line LCD, write cursor
\xfe
\x01
\x7a
\x83
\x04
\x00
\x01
\x01
\x04
\xff
\xfe
\x01
\x00
\x06
\x07
\xff
82
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