Hello,
I'm new at this.
I made a sketch for my blinds.
But got following message:
expected identifier before '(' token.
I searched for a couple of hours, and tried several things, but can't find the solution.
What's wrong in the sketch?
/*
Smoothing
Reads repeatedly from an analog input, calculating a running average and
printing it to the computer. Keeps ten readings in an array and continually
averages them.
The circuit:
- analog sensor (potentiometer will do) attached to analog input 0
created 22 Apr 2007
by David A. Mellis <dam@mellis.org>
modified 9 Apr 2012
by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Smoothing
*/
// Define the number of samples to keep track of. The higher the number, the
// more the readings will be smoothed, but the slower the output will respond to
// the input. Using a constant rather than a normal variable lets us use this
// value to determine the size of the readings array.
const int numReadings = 10;
int readings[numReadings]; // the readings from the analog input
int readIndex = 0; // the index of the current reading
int total = 0; // the running total
int average = 0; // the average
int inputPin = A0;
int state = 0;
//Motor A
const int motorPin1 = 9; // Pin 14 of L293
const int motorPin2 = 10; // Pin 10 of L293
//Motor B
const int motorPin3 = 6; // Pin 7 of L293
const int motorPin4 = 5; // Pin 2 of L293
void setup() {
// initialize serial communication with computer:
Serial.begin(9600);
// initialize all the readings to 0:
for (int thisReading = 0; thisReading < numReadings; thisReading++) {
readings[thisReading] = 0;
}
}
void loop() {
// subtract the last reading:
total = total - readings[readIndex];
// read from the sensor:
readings[readIndex] = analogRead(inputPin);
// add the reading to the total:
total = total + readings[readIndex];
// advance to the next position in the array:
readIndex = readIndex + 1;
// if we're at the end of the array...
if (readIndex >= numReadings) {
// ...wrap around to the beginning:
readIndex = 0;
// calculate the average:
average = total / numReadings ;
// send it to the computer as ASCII digits
Serial.println(average);
delay(1000); // delay in between reads for stability
}
if (average >= 600) && (state == 0)
{
//This code will turn Motor A + B counterclockwise for 5 sec.
analogWrite(motorPin1, 0);
analogWrite(motorPin2, 254);
analogWrite(motorPin3, 0);
analogWrite(motorPin4, 254);
delay(5000);
state = 1; // blinds are closed
//And this code will stop motors
analogWrite(motorPin1, 0);
analogWrite(motorPin2, 0);
analogWrite(motorPin3, 0);
analogWrite(motorPin4, 0);
}
else if (average <= 500) && (state == 1)
{
//This code will turn Motor A + B clockwise for 5 sec.
analogWrite(motorPin1, 254);
analogWrite(motorPin2, 0);
analogWrite(motorPin3, 254);
analogWrite(motorPin4, 0);
delay(5000);
state = 0; // blinds are open
//And this code will stop motors
analogWrite(motorPin1, 0);
analogWrite(motorPin2, 0);
analogWrite(motorPin3, 0);
analogWrite(motorPin4, 0);
}
}
Thanks in advance.
