I want to modify the "Knob" code example to specify a servo angle based on the Analog Read val, by adding if statements. The following is the code shown in the Arduino example, except all I have done is add one line, If (val) > 500), which is in the void loop.
The sketch verifies until I add this one line - then I get the subject message.
I have read the variables section, the rules for If's and forum posts. This is my first attempt coding - it seems simple, but need advice. Thanks !
// Controlling a servo position using a potentiometer (variable resistor)
// by Michal Rinott http://people.interaction-ivrea.it/m.rinott
#include <Servo.h>
Servo driveservo; // create servo object to control a servo
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
void setup()
{
driveservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop()
{
val = analogRead(potpin);
val = map(val, 0, 1023, 0, 179); // scale it to use it with the servo (value between 0 and 180)
If (val > 500)
driveservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
}