Other Arduino Codes and Videos by Robojax

Control 1 or more servo Motors ESP32 Bluetooth using mobile device Move-Return EESP32-SERV-BT-3

Control 1 or more servo Motors ESP32 Bluetooth using mobile device Move-Return ESP32-SERV-BT-3

This video shows how to control one or more servo ESP32 Microcontroller and Bluetooth to move it from 0° to 180° or from 180° to 0° and return or set your own valuesYou need to download the libary specifically work with ESP32 Arduino IDE.

We have 4 type of controling Servo Motor with ESP32

The link to use in the "preferences" of Arduino IDE for ESP32 board https://dl.espressif.com/dl/package_esp32_index.json Watch video for instructions.

Resources for this sketch


/*
 * Original Servo Library sourse: https://github.com/RoboticsBrno/ESP32-Arduino-Servo-Library
 * 
 * This is Arduino code to control Servo motor with ESP32 boards over bluetooth 
 EESP32-SERV-BT-3
 * Watch video instruction for this code: https://youtu.be/39e4V0-GCgo
   
 * Written/updated by Ahmad Shamshiri for Robojax Video channel www.Robojax.com
 * Date: Jan 05, 2019, in Ajax, Ontario, Canada
 * Permission granted to share this code given that this
 * note is kept with the code.
 * Disclaimer: this code is "AS IS" and for educational purpose only.
 * this code has been downloaded from http://robojax.com/learn/arduino/
 
 * Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in structured course with all material, wiring diagram and library
all in once place. Purchase My course on Udemy.com http://robojax.com/L/?id=62

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 *  * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been download from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include <Servo_ESP32.h>

static const int servo1Pin = 19; //printed G19 on the board

Servo_ESP32 servo1;
const char turnON ='a';
const int type =2;//watch video for details. Link is at the top of this code (robojax)

int servo1Angle =90;
int servo1AngleStep =10;

int servo1AngleMin =0;
int servo1AngleMax = 180;

int buttonPushed =0;
char receivedChar;// received value will be stored as CHAR in this variable

#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

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32_Robojax"); //Bluetooth device name
  Serial.println("The device started, now you can pair it with bluetooth
 with ESP32_Robojax");
  
    servo1.attach(servo1Pin);
    //Servo control using ESP32 from Robojax.com

}

void loop() {
  //Robojax.com ESP32 Servo BT code
    receivedChar =(char)SerialBT.read();

  if(receivedChar == turnON){
    buttonPushed = 1;
  }
  
   if( buttonPushed ){
       servo1Angle += servo1AngleStep;
       // reverse the direction of the moving at the ends of the angle:
        if (servo1Angle >= servo1AngleMax) {
          servo1AngleStep = -servo1AngleStep;
            if(type ==1)
            {
                buttonPushed =0;                   
            }
        }
        
        if (servo1Angle <= servo1AngleMin) {
          servo1AngleStep = -servo1AngleStep;
           if(type ==2)
            {
                buttonPushed =0;       
            }
        }
     SerialBT.print("Moving to:");// write on BT app
     SerialBT.println(servo1Angle);// write on BT app 
    Serial.print("Moving to:");//print on Serial Monitor
    Serial.println(servo1Angle); //print on Serial Monitor     
                  
   }//if pushed
   
   servo1.write(servo1Angle);
   delay(20);

}
   

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