Code :-  

#define BLYNK_TEMPLATE_ID "TMPLP6t-OSz9"

#define BLYNK_DEVICE_NAME "servo control esp32"

#define BLYNK_AUTH_TOKEN "ci76Y8ePfXyn_xalXnzTEgZoEJjTsisM"

#define BLYNK_PRINT Serial

#include <WiFi.h>

#include <WiFiClient.h>

#include <BlynkSimpleEsp32.h>

#include <ESP32Servo.h>

char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "wifi name";

char pass[] = "0987654321";

Servo indexservo;

Servo mid;

Servo ring;

Servo lit;

Servo thumb;


BLYNK_WRITE(V0) {

int index1servoval=param.asInt();

indexservo.write(param.asInt());


}


BLYNK_WRITE(V1) {

  int midservoval=param.asInt();

  mid.write(midservoval);

}


BLYNK_WRITE(V2) {

  int ringservoval=param.asInt();

  ring.write(ringservoval);

}


BLYNK_WRITE(V3) {

  int litservoval=param.asInt();

  lit.write(litservoval);

}


BLYNK_WRITE(V4) {

  int thumbservoval=param.asInt();

  thumb.write(thumbservoval);

}


void setup() {

  // put your setup code here, to run once:

WiFi.begin(ssid, pass);

Blynk.begin(auth,ssid,pass);

indexservo.attach(26);

mid.attach(25);

ring.attach(33);

lit.attach(32);

thumb.attach(27);

}


void loop() {

  // put your main code here, to run repeatedly:

Blynk.run();

}