// by Joseph P Rampolla, Sept. 2022
#include <ESP32Servo.h>
#include "BluetoothSerial.h"
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
Servo myservo;
int servoPin = 13;
BluetoothSerial SerialBT;
char cmd[100];
int cmdIndex;
int X;
void setup() {
Serial.begin(115200);
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
myservo.write(X);
} else {
cmd[cmdIndex++] = c;
}
}
}
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