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Hey im new to this forum and to php. im look for some help as i cant seem to get my lights to light up on my Arduino Uno board using 'Serial Comunication' This is my code on the server... $serial->deviceOpen(); if ($_GET['action'] == "on") { $serial->sendMessage("N\r\n"); $file = fopen("testFile.txt","w"); fwrite($file, "1"); fclose($file); } else if ($_GET['action'] == "off") { $serial->sendMessage("0\r\n"); $file = fopen("testFile.txt","w"); fwrite($file, "0"); fclose($file); } And my code on the Arduino is listening to the serial port and is waiting for N. I know this is correct as i can test it by manually sending it an N... If you know what is wrong with my code please help me and if you need more code snippets then i will gladly post them. Thanks! Chris
