OK, I want to send bytes, not characters, to my serial device.

The projector's users manual states:

Communication method - RS-232C: 9600bps, No Parity, Data Length: 8 bits; Stop Bit Length: 1 bit

Communication format: STX (02h) Command (3Byte) ETX (03h)
Only 1 command valid per communication.
Data format: For input commands, only ASCII-compliant all-uppercase alphanumeric characters supported....

Hello,

The church I go to has a data projector (Toshiba TDP-S20) that can be controlled via a serial connection. When it was installed, we connected the projector to the nearest PC (runnings Windows XP) and I found a RS232 software program online that allowed me to control it successfully. To power up the projector, I found I could send the following string of characters:

BlackSmileyFace + PON + BlackHeartSuit (without...