HI guys, I have a problem with my udoo. When I upload the following sketch on my Udoo, it's not doing anything.(it's not sending back any serial data nor does it turn on/ dimm the led) I tested the sketch on other Arduinos and it always worked without any problems. A very simple sketch that prints a word in the serial monitor works though. also the LED blink sketch works without problems. thanks!! Code: int led1 =11; int led2 =10; int led3 =9; String readString; void setup() { Serial.begin(115200); pinMode (led1, OUTPUT); pinMode (led2, OUTPUT); pinMode (led3, OUTPUT); } void loop() { if (Serial.available()) { char c = Serial.read(); if (c == ',') { if (readString.length() >1) { int n = readString.toInt(); if(readString.indexOf('a') >0) { analogWrite(led1, n); } if(readString.indexOf('b') >0) { analogWrite(led2, n); } if(readString.indexOf('c') >0) { analogWrite(led3, n); } } readString=""; } else { readString += c; } } Serial.flush(); }
to write back it needs Serial.write(...) or Serial.printl()...where are they? try to use the terminal by ARduino Ide and send some characters and then try to understand what is hannened