Potentiometer reading out letters

Question

My potentiometer reads out t's or u's in my serial. I believe that my potentiometer is wired correctly. What am I missing? Here is my code:

#include <VarSpeedServo.h>
VarSpeedServo servo;
const byte buttonLeft = 2;
const byte buttonRight = 3;
const int led = 7;
const int potentioPin = A0;
int potentioVal = 0;
void setup() {
 Serial.begin(9600);
 servo.attach(11);
 // PIN MODES
 pinMode(buttonLeft, INPUT);
 pinMode(buttonRight, INPUT);
 pinMode(led, OUTPUT);
 // INTERRUPT
 attachInterrupt(digitalPinToInterrupt(buttonLeft), turnServo, FALLING);
}
void loop() {
 int stateBtnLeft = digitalRead(buttonLeft);
 int stateBtnRight = digitalRead(buttonRight);
 if(stateBtnLeft == 0 && stateBtnRight == 0){
 digitalWrite(led, HIGH);
 } else {
 digitalWrite(led, LOW);
 }
}
void turnServo(){
 Serial.println("Button was pushed");
 potentioVal = analogRead(0);
 Serial.write("Servo moving with speed ");
 Serial.write(potentioVal);
 Serial.println("");
 //servo.write(180, potentioVal, true);
 //Serial.write("Reached position of motor");
 //lightLed();
}
void lightLed(){
 digitalWrite(led, HIGH);
 delay(2000);
 digitalWrite(led, LOW);
}

Answer 1

You need to use Serial.print instead of Serial.write.

Answer 2

write() is a function for binary data. I you want to print the number as text, use print() or println().

Serial.println(potentioVal);