Hi,
After an absence of about 2 years I have started again with Arduino.
I'm repeating my previous experiments quickly to get familiar with the coding again.
I have trouble controlling a RC servo ending up in 1 dead servo until now.
I'm really puzzled because this code worked fine 2 years ago (since then I have thrown away the joystick but the code should still be fine)
// Controlling servo positions using a hacked joystick (Logitech WingmanAttackII)
// by Leo Groeneveld
#include <Servo.h>
Servo myservo2; // create servo object to control servo2 (pitch servo in my case)
Servo myservo3; // create servo object to control servo3 (roll servo in my case)
int potpin2 = 2; // analog pin used to connect the potentiometer2
int val2; // variable to read the value2 from the analog pin2
int potpin3 = 3; // analog pin used to connect the potentiometer3
int val3; // variable to read the value3 from the analog pin3
int servopos2; // variable to set the postition of servo2
int servopos3; // variable to set the postition of servo3
void setup()
{
myservo2.attach(2); // attaches the servo on pin 2 to the servo object
myservo3.attach(3); // attaches the servo on pin 3 to the servo object
Serial.begin (9600); // start serial connexion to monitor
}
void loop()
{
val2 = analogRead(potpin2); // reads the value of potentiometer2 (value between 0 and 1023)
val3 = analogRead(potpin3); // reads the value of potentiometer3 (value between 0 and 1023)
if (val2 > 510 and val2 < 610) { // dead-band
servopos2 = 89; // when in dead-band servo2 postition is neutral
myservo2.write(servopos2); // sets servo2 position to neutral
}
else {
if (val2 > 240 and val2 <= 510) {
servopos2 = map(val2, 240, 510, 15, 89); // scale it to use it with servo2 (value between 15 and 89)
myservo2.write(servopos2); // sets servo2 position according to the scaled value
}
else {
if (val2 <=240){ // when joystick potentiometer2 gets "overturned"
servopos2 = 15; // postition of servo2 must be 15
myservo2.write(servopos2); // keeps servo2 in maximum position
}
else {
if (val2 >= 610 and val2 < 880) {
servopos2 = map(val2, 610, 880, 89, 164); // scale it to use it with servo2 (value between 89 and 164)
myservo2.write(servopos2); // sets servo2 position according to the scaled value
}
else {
if (val2 >= 880) { // when joystick potentiometer gets "overturned"
servopos2 = 164; // position of servo2 must be 164
myservo2.write(servopos2); // keeps servo2 in maximum position
}}}}}
// seperator between servos (DIRECTION OF SERVO3 IS REVERSED!!!)
if (val3 > 460 and val3 < 560) { // dead-band
servopos3 = 89; // when in dead-band servo3 postition is neutral
myservo3.write(servopos3); // sets servo3 position to neutral
}
else {
if (val3 > 190 and val3 <= 460) {
servopos3 = map(val3, 191, 460, 164, 89); // scale it to use it with servo3 (value between 164 and 89)
myservo3.write(servopos3); // sets servo3 position according to the scaled value
}
else {
if (val3 <=190){ // when joystick potentiometer3 gets "overturned"
servopos3 = 164; // postition of servo3 must be 164
myservo3.write(servopos3); // keeps servo3 in maximum position
}
else {
if (val3 >= 560 and val3 < 830) {
servopos3 = map(val3, 560, 829, 89, 15); // scale it to use it with servo3 (value between 89 and 15)
myservo3.write(servopos3); // sets servo3 position according to the scaled value
}
else {
if (val3 >= 830) { // when joystick potentiometer gets "overturned"
servopos3 = 15; // position of servo3 must be 15
myservo3.write(servopos3); // keeps servo3 in maximum position
}}}}}
delay(15); // waits for the servos to get in the desired positions
Serial.print("potstand2 = ");
Serial.print(val2);
Serial.print(" servo2 stand = ");
Serial.println(servopos2);
// Serial.print("potstand3 = ");
// Serial.print(val3);
// Serial.print(" servo3 stand = ");
// Serial.println(servopos3);
}
Now I have written this code to control a single servo using a potentiometer.
#include <Servo.h>
Servo myservo; // create servo object to control pwm signal
int potPin = 2; // select the input pin for the potentiometer
int val; // variable to store the value coming from the potmeter
int servopos; // variable to set the value of the pwm signal
void setup()
{
myservo.attach(7); // attaches the servo on pin 7 to the servo object
Serial.begin (9600);
}
void loop ()
{
val = analogRead(potPin); // read the value from the potmeter
servopos = map (val, 0, 1023, 10, 169); // scale the value from the potmeter to fade value to be written to digital pin 9
myservo.write(servopos); // set servo position to scaled value
Serial.print("servopos = ");
Serial.println(servopos);
Serial.print("val = ");
Serial.println(val);
delay(1500);
}
All it does is putting the servo in one max angle and overloading the thing.
When I look at the values using the serial monitor everything seems to be fine.
The setup is:
HP 8710p laptop running windows 8.1 (is this the problem?, my previous OS was windows XP)
Arduino MEGA 1280 clone, used it the previous time
What am I doing wrong?
Thanks for your help.
Leo
