gistfile1.ino

#include <Servo.h> 
 
Servo gripper;
Servo arm;
 
int pos = 120;
int target = pos;
 
void setup() 
{ 
  Serial.begin(115200);
  gripper.attach(9);
  gripper.write(pos);
  
  arm.attach(8);
  arm.write(90);
} 
 
 
void loop() 
{
  Servo* output = &arm;
  if (Serial.available() > 0) {
    char which = Serial.read();
    Serial.println(which);
    if (which == 'a' || which == 'A') {
      output = &arm;
    }
    if (which == 'g' || which == 'G') {
      output = &gripper;
    }
    target = Serial.parseInt();
    Serial.println(target);
    output->write(target);
  }
}