Lab 8 Servo Motor

Servo 1 ch Arduino IDE Code

#include <ESP32Servo.h> 

Servo myservo;

void setup()

{

myservo.attach(32, 500, 2400);           // attaches the servo on pin 32 (D32) to the servo object

                                          // using SG90 servo min/max of 500us and 2400us

                                         // for MG995 large servo, use 1000us and 2000us,

                                         // which are the defaults, so this line could be

                                         // "myservo.attach(servoPin);"

}

void loop() { 

  myservo.write(0);delay(1000);  

  myservo.write(30);delay(1000);  

  myservo.write(60);delay(1000);                          

}

4.ทำการกดปุ่มUpload ที่เป็นรูปหัวลูกษร หรือจะกด Ctrl+u ที่คีย์บอร์ดเพื่อทำการUploadโปรแกรมไปที่บอร์ดESP32 ดังรูปข้างล่าง

Servo K-nob Arduino IDE Code

#include <ESP32Servo.h> 

Servo myservo;  // create servo object to control a servo

// Possible PWM GPIO pins on the ESP32: 0(used by on-board button),2,4,5(used by on-board LED),12-19,21-23,25-27,32-33 

int servoPin = 32;      // GPIO pin used to connect the servo control (digital out)

int potPin = 35;        // GPIO pin used to connect the potentiometer (analog in)

int ADC_Max = 4096;     // This is the default ADC max value on the ESP32 (12 bit ADC width);

                        // this width can be set (in low-level oode) from 9-12 bits, for a

                        // a range of max values of 512-4096

int val;    // variable to read the value from the analog pin

void setup()

{

myservo.attach(servoPin, 500, 2400);   // attaches the servo on pin 32 (D32) to the servo object

                                         // using SG90 servo min/max of 500us and 2400us

                                         // for MG995 large servo, use 1000us and 2000us,

                                         // which are the defaults, so this line could be

                                         // "myservo.attach(servoPin);"

Serial.begin(115200);

}

void loop() {

  val = analogRead(potPin);            // read the value of the potentiometer (value between 0 and 1023)

  val = map(val, 0, ADC_Max, 0, 180);     // scale it to use it with the servo (value between 0 and 180)

  Serial.println(val);

  myservo.write(val);                  // set the servo position according to the scaled value

  delay(50);                          // wait for the servo to get there

}