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58 lines
1.4 KiB
58 lines
1.4 KiB
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#include <Servo.h>
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Servo myservo; // create servo object to control a servo
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// a maximum of eight servo objects can be created
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int dial_pos = 0; // variable to store the servo position
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int led_pin = 13;
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int difference = 0;
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unsigned char value1 = 0, value2 = 0;
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int value = 0;
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void setup()
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{
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digitalWrite(led_pin, LOW);
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Serial.begin(9600); //set serial to 9600 baud rate
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myservo.attach(9); // attaches the servo on pin 9 to the servo object
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myservo.write(dial_pos);
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}
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void loop()
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{
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while(Serial.available() <= 0);
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value1 = Serial.read();
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while(Serial.available() <= 0);
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value2 = Serial.read();
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// we're looking to make two bytes into a 16 bit int here
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value = value2;
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value = value << 8;
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value = value | value1;
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Serial.println("servo value is:"); // some debugging
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Serial.println(value);
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// as long as we're above zero, drop off slowly when there's no
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// activity
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if ((value == dial_pos) && (dial_pos > 0))
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value--;
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difference = abs(dial_pos - value);
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dial_pos = value;
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// if there's a big change, blinkenlight
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if (difference > 5) {
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digitalWrite(led_pin, HIGH);
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delay(10 * difference);
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digitalWrite(led_pin, LOW);
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Serial.flush();
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}
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for (int i = dial_pos - difference; i <= dial_pos; i++) {
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myservo.write(i);
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delay(10);
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}
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}
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