Thank you, tpetar, but now its fine. No. My laptop don have the port , like i said in above, i use the USB to RS232 Converter cable and now it work. i uninstall and reinstall the
driver sucessfully as COM port 3 so now i need 3 code, one is turn the servo ,one 180 degree and one is continous rotate.Got any website that can download a source code or
teach how to programming? Actually im dono how to programming and the lecture din't teach but demand that the project need a programming. Its looks funny ?