Arduino Uno Pololu VNH 5019 Motor Shield using 2 Motors and 1 Joystick and 2 Xbee for wireless communication

This video demonstrates how to wirelessly control two DC motors using two Arduino Unos. One Arduino acts as a controller with a joystick and XBee module, while the other acts as a receiver with a motor shield and XBee module. The video shows the connections and provides a basic overview of the code used to read joystick input and control the motors wirelessly.

Project#1

DualVNH5019MotorShield library
2 x Arduino Uno
2 x xbee series 1
1 x tumb joystick
1 x 9 Volt power pack
1 x Pololu VNH5019 Motor Shield
2 x 12 Volt dc motors
1 x power supply 12V

GitHub:
https://github.com/Fabiolus2020/ArduinoUno_1Joystick_2Motors_2Xbees_DualVNH5019MotorShield 

EasyTrasnfer library:

https://github.com/madsci1016/Arduino-EasyTransfer 

Example Sketch:

https://codebender.cc/example/EasyTransfer/EasyTransfer_2Way_wPot_Example#EasyTransfer_2Way_wPot_Example.ino 

Pololu VNH5019 user guide
https://www.pololu.com/docs/0J49/all 

How to program Xbees
https://learn.sparkfun.com/tutorials/exploring-xbees-and-xctu/all 

Demo Video

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Arduino Uno Pololu VNH 5019 Motor Shield using 2 Motors and 1 Joystick and 2 Xbee for wireless communication

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controller sketch

//created by Fabiolus 2021/01/08


#include <EasyTransfer.h>

//create two objects
EasyTransfer ETout;
const int potpin1 = A0;
const int potpin2 = A1;


struct SEND_DATA_STRUCTURE {
  //put your variable definitions here for the data you want to receive
  //THIS MUST BE EXACTLY THE SAME ON THE OTHER ARDUINO
  int valX;
  int valY;

};

SEND_DATA_STRUCTURE txdata;

void setup() {
  Serial.begin(9600);

  //start the library, pass in the data details and the name of the serial port. Can be Serial, Serial1, Serial2, etc.
  ETout.begin(details(txdata), &Serial);

}

void loop() {
  txdata.valY = analogRead(potpin1);
  txdata.valX = analogRead(potpin2);

  ETout.sendData();

}

receiver sketch

//created by Fabiolus 2021/01/08


#include <DualVNH5019MotorShield.h>
#include <EasyTransfer.h>
DualVNH5019MotorShield md;

void stopIfFault()
{
  if (md.getM1Fault())
  {
    Serial.println("M1 fault");
    while (1);
  }
  if (md.getM2Fault())
  {
    Serial.println("M2 fault");
    while (1);
  }
}

EasyTransfer ETin;

struct RECEIVE_DATA_STRUCTURE {
  //put your variable definitions here for the data you want to receive
  //THIS MUST BE EXACTLY THE SAME ON THE OTHER ARDUINO
  int valX;
  int valY;

};

RECEIVE_DATA_STRUCTURE rxdata;

void setup() {
  Serial.begin(9600);

  md.init(); //initiates default pololu shield pins
  ETin.begin(details(rxdata), &Serial);

}

void loop() {

  for (int i = 0; i < 5; i++) {
    if (ETin.receiveData()) {

      rxdata.valY = map(rxdata.valY, 0, 1023, -255, 255);
      rxdata.valX = map(rxdata.valX, 0, 1023, -255, 255);

      if (rxdata.valX >= 10)
      {
        md.setM1Speed(rxdata.valX);
        md.setM2Speed(rxdata.valX);
        stopIfFault();
      }

      else if  (rxdata.valX <= -10)
      {
        md.setM1Speed(rxdata.valX);
        md.setM2Speed(rxdata.valX);
        stopIfFault();
      }

      else if  (rxdata.valY <= -10)
      {
        md.setM1Speed(rxdata.valY);
        md.setM2Speed(-rxdata.valY);
        stopIfFault();
      }


      else if  (rxdata.valY >= 10)
      {
        md.setM1Speed(-rxdata.valY);
        md.setM2Speed(rxdata.valY);
        stopIfFault();
      }

      else {
        md.setM1Speed(0);
        md.setM2Speed(0);
      }
    }
    delay(10);
  }
}