hi, when I test this program gives me an error (as in the picture) how can I fix? I enclose also the full text.
/*
Simple braitenberg vehicle + Obstacle avoiding.
Robot driven by 2 Continuous Rotation Servos.
Servos controlled by LDRs in front of robot.
The behaviour (light seeking/light avoiding) is determined by which LDR is controlling which servo.
The analog read values from LDRs are mapped to control the continous rotation servos.
A tactical switch on pin7 triggers the robot to turn around in case of an obstacle.
The robot can have 3 different behaviours.
*/
#include <Servo.h>
Servo leftServo;
Servo rightServo;
int leftValue = 0;
int rightValue = 0;
int MAXspeed = 0.5; // Value from 0-1
void setup() {
// obstacle avoiding switch pin
pinMode(7, INPUT_PULLUP); // This line pulls the pin HIGH
digitalWrite(7, HIGH);
// LEDeye of robot
pinMode(6, OUTPUT);
digitalWrite(6, LOW);
leftServo.attach(10);
rightServo.attach(9);
}
void loop() {
// robot hits an obstacle: turns around 180 degree
if (digitalRead(7)==LOW){
digitalWrite(6, HIGH); //blink eye
delay(100);
leftServo.write(90); //stop left servo
delay(100);
rightServo.write(90); //stop left servo
delay(100);
digitalWrite(6, LOW);
//go back for half a second
leftServo.write(90 - 10);
rightServo.write(90 + 25);
delay(500);
//turn around right
leftServo.write(90 + 30);
rightServo.write(90 + 30);
delay(700);
}
// read LDRs
leftValue = analogRead(0);
rightValue = analogRead(1);
leftValue = map(leftValue, 0, 1023, 0, 89); // scale it to use it with the servo (value between 0 and 180)
rightValue = map(rightValue, 0, 1023, 0, 89); // scale it to use it with the servo (value between 0 and 180)
// First behaviour: calibrating servos for going straight
// leftServo.write(90 + 18);
// rightServo.write(90 - 15);
// Second behaviour: follow the light
left.Servo(90 + rightValue);
right.Servo(90 - leftValue);
// Third behaviour: avoid the light
// left.Servo(90 - rightValue);
// right.Servo(90 + leftValue);
delay(100);
}
left.Servo(90 + rightValue);
right.Servo(90 - leftValue);
Delete the full stops in the sevo names. Your servo objects are named leftServo and rightServo.
Having done that what do you want the servos to do in those lines ? I assume that you mean
leftServo.write(90 + rightValue);
rightServo.write(90 - leftValue);
I'm sorry I was wrong file
/*
Simple braitenberg vehicle + Obstacle avoiding.
Robot driven by 2 Continuous Rotation Servos.
Servos controlled by LDRs in front of robot.
The behaviour (light seeking/light avoiding) is determined by which LDR is controlling which servo.
The analog read values from LDRs are mapped to control the continous rotation servos.
A tactical switch on pin7 triggers the robot to turn around in case of an obstacle.
The robot can have 3 different behaviours.
*/
#include <Servo.h>
Servo leftServo;
Servo rightServo;
int leftValue = 0;
int rightValue = 0;
int MAXspeed = 0.5; // Value from 0-1
void setup() {
// obstacle avoiding switch pin
pinMode(7, INPUT_PULLUP); // This line pulls the pin HIGH
digitalWrite(7, HIGH);
// LEDeye of robot
pinMode(6, OUTPUT);
digitalWrite(6, LOW);
leftServo.attach(10);
rightServo.attach(9);
}
void loop() {
// robot hits an obstacle: turns around 180 degree
if (digitalRead(7)==LOW){
digitalWrite(6, HIGH); //blink eye
delay(100);
leftServo.write(90); //stop left servo
delay(100);
rightServo.write(90); //stop left servo
delay(100);
digitalWrite(6, LOW);
//go back for half a second
leftServo.write(90 - 10);
rightServo.write(90 + 25);
delay(500);
//turn around right
leftServo.write(90 + 30);
rightServo.write(90 + 30);
delay(700);
}
// read LDRs
leftValue = analogRead(0);
rightValue = analogRead(1);
leftValue = map(leftValue, 0, 1023, 0, 89); // scale it to use it with the servo (value between 0 and 180)
rightValue = map(rightValue, 0, 1023, 0, 89); // scale it to use it with the servo (value between 0 and 180)
// First behaviour: calibrating servos for going straight
// leftServo.write(90 + 18);
// rightServo.write(90 - 15);
// Second behaviour: follow the light
left.Servo(90 + rightValue);
right.Servo(90 - leftValue);
// Third behaviour: avoid the light
// left.Servo(90 - rightValue);
// right.Servo(90 + leftValue);
delay(100);
}
// Second behaviour: follow the light
left.Servo(90 + rightValue);
See the earlier response.
thanks a lot, it works fine now 
;D ;D ;D ;D ;D 