A Servo On A Transformer

Girl in a jacket

Girl in a jacket

// by Joseph P Rampolla, Sept. 2022
#include <ESP32Servo.h>
#include "BluetoothSerial.h"

#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
Servo myservo;
int servoPin = 13;
BluetoothSerial SerialBT;
char cmd[100];
int cmdIndex;

int X;

void setup() {
  SerialBT.begin("ESP32SineWaveServo"); //Bluetooth device name (any name)
  Serial.println("The device started, now you can pair it with bluetooth!");

  myservo.attach(13);  // servo pin on the ESP32 (servo needs its own 5-6 VDC power supply 1 amp
  myservo.write(132); // throttle at lowest setting, config slider 132 min to 11 max on RoboRemoFree app, ID "t" or any character 

  cmdIndex = 0;

  X = 132;

void loop() {

  if (SerialBT.available()) {
    char c = (char)SerialBT.read();
    if (X == 0) {(X = 132);};

    if (c == '\r' || c == '\n') {
      cmd[cmdIndex] = 0;
      cmdIndex = 0;
      X = (atoi(cmd + 2));

      if (X == 0) {(X = 132);};  // prevents servo jamming

    } else {
      cmd[cmdIndex++] = c;



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