Serail monitor control problem

Projects Interfacing w/ Software on the Computer
1

first, code...

void setup(){
  Serial.begin(9600);
  pinMode(13,OUTPUT);
  digitalWrite(13,LOW);
}

int byteRead = 0;

void loop(){
  if(Serial.available()){
    byteRead = Serial.parseInt();
    if(byteRead>255)digitalWrite(13,HIGH);
    else analogWrite(13,byteRead);
    delay(500);
  }
}

problem:

when i input one value,
or if I input a series of value separated by space and when reading reach the last one
the LED have a second of delay ( someone tell me it is timeout ) before reacting to the last value.

when i put a space or any non digit at the end after the last value,
the LED have a second of delay after reacting to the last value and then turn off.

when i input a digit ( eg. 5 ) during that delay period of time,
the digit "added" to the last value ( eg. 25 ) to become a new value ( here: 25 + 5 = 255 )

So can any one tell me what the problem is and how to solve this
if I want the LED change the brightness at any moment immediately?

2

Maybe you need to have a byte variable called intRead. Or maybe a float variable called charRead.

So can any one tell me what the problem is and how to solve this
if I want the LED change the brightness at any moment immediately?

Quit using parseInt().

3

PaulS:
Maybe you need to have a byte variable called intRead. Or maybe a float variable called charRead.

So can any one tell me what the problem is and how to solve this
if I want the LED change the brightness at any moment immediately?

Quit using parseInt().

how?

4

how?

Simple, really. Highlight the code, and hit delete.

You need to write your own code that reads one character at a time from the serial port and stores it in an array, adding a NULL after each addition. When the character is the end of number/packet marker, call atoi() with the array, reset index, and NULL the array.