1. cat /dev/ttyUSB0& 2. stty -F /dev/ttyUSB0 300 -parodd cs7 -cstopb parenb -ixoff -crtscts -hupcl -ixon -opost -onlcr -isig -icanon -iexten -echo -echoe -echoctl -echoke 3. echo -n -e '\x2F\x3F\x21\x0D\x0A' > /dev/ttyUSB0 4. echo -n -e '\x06\x30\x30\x30\x0D\x0A' > /dev/ttyUSB0