I'm trying to send a hex command from my arduino to a ctouch screen. Whenever i do this with my serial port util it responds perfectly (command i'll be sending : A9 11 00 01 8A. However when i hook up my arduino it's not responding, and I can't figure out why. If i hook up my serial port utility (on pc) to the arduino, it seems to be sending the right thing. picture of the serial port util (both sending and receiving)
sending (receiving part is ack from the tv) https://i.stack.imgur.com/s7FZI.png
receiving (from arduino) https://i.stack.imgur.com/sKEba.png
ctouch manual: https://drive.google.com/file/d/17T58Ni2ot0MjJA0tRB0rVxadoJHd41dw/view?usp=sharing my code for sending the command:
byte myHex []= {0xA9,0x11,0x00,0x1,0x8A};
mySerial.write(myHex, sizeof(myHex));