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Circuit diagram Dual Servo Control Arduino  :

Code Dual Servo Control Arduino:

#include <Servo.h>
char buffer[11];
Servo servo1; // Create a servo object
Servo servo2; // Create a second servo object
void setup()
{
servo1.attach(5); // Attaches the servo on pin 5 to the
servo1 object
servo2.attach(6); // Attaches the servo on pin 6 to the
servo2 object
Serial.begin(9600);
while(Serial.available())
Serial.read();
servo1.write(90); // Put servo1 at home position
servo2.write(90); // Put servo2 at home postion
Serial.println("STARTING...");
}
void loop()
{
if (Serial.available() > 0) { // Check if data has been
entered
int index=0;
delay(100); // Let the buffer fill up
int numChar = Serial.available(); // Find the string
length
if (numChar>10) {
numChar=10;
}
while (numChar--) {
// Fill the buffer with the string
buffer[index++] = Serial.read();
}
buffer[index]='\0';
splitString(buffer); // Run splitString function
}
}
void splitString(char* data) {
Serial.print("Data entered: ");
Serial.println(data);
char* parameter;
parameter = strtok (data, " ,"); //String to token
while (parameter != NULL) { // If we haven't reached the end
of the string...
setServo(parameter); // ...run the setServo function
parameter = strtok (NULL, " ,");
}
while(Serial.available())
Serial.read();
}
void setServo(char* data) {
if ((data[0] == 'L') || (data[0] == 'l')) {
int firstVal = strtol(data+1, NULL, 10); // String to
long integer
firstVal = constrain(firstVal,0,180); // Constrain
values
servo1.write(firstVal);
Serial.print("Servo1 is set to: ");
Serial.println(firstVal);
}
if ((data[0] == 'R') || (data[0] == 'r')) {
int secondVal = strtol(data+1, NULL, 10); // String
to long integer
secondVal = constrain(secondVal,0,255); //
Constrain the values
servo2.write(secondVal);
Serial.print("Servo2 is set to: ");
Serial.println(secondVal);
}
}

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