I would like to know how to control 2 rs775 dc motor and a servo using a nrf24l01 receiver and transmitter

[varun_bob]

I am very new to this thing and the resources that i got from the internet i only got how to control a servo or 2 motors. But I would want to know how to integrate these two together.
*need help as soon as possible as it is for my project
Please let me know it he code is correct.
The below code is for the receiving end.

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(9, 10); // NRF24L01 pins

// Motor A
int enA = 3;
int in1 = 4;
int in2 = 5;

// Motor B
int enB = 6;
int in3 = 7;
int in4 = 8;

// Servo
int servoPin = 11;
int servoAngle = 90;

void setup() {
  // Motor pins setup
  pinMode(enA, OUTPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(enB, OUTPUT);
  pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);

  // Servo setup
  pinMode(servoPin, OUTPUT);

  // NRF24L01 setup
  radio.begin();
  radio.openReadingPipe(1, 0xF0F0F0F0E1LL); // Address of the receiver
  radio.setPALevel(RF24_PA_HIGH);
  radio.startListening();
}

void loop() {
  if (radio.available()) {
    int joystickValues[4];
    radio.read(&joystickValues, sizeof(joystickValues));

    // Motor A control
    int motorA_speed = map(joystickValues[1], 0, 1023, -255, 255);
    if (motorA_speed > 0) {
      digitalWrite(in1, HIGH);
      digitalWrite(in2, LOW);
    } else if (motorA_speed < 0) {
      digitalWrite(in1, LOW);
      digitalWrite(in2, HIGH);
      motorA_speed = -motorA_speed;
    } else {
      digitalWrite(in1, LOW);
      digitalWrite(in2, LOW);
    }
    analogWrite(enA, motorA_speed);

    // Motor B control
    int motorB_speed = map(joystickValues[3], 0, 1023, -255, 255);
    if (motorB_speed > 0) {
      digitalWrite(in3, HIGH);
      digitalWrite(in4, LOW);
    } else if (motorB_speed < 0) {
      digitalWrite(in3, LOW);
      digitalWrite(in4, HIGH);
      motorB_speed = -motorB_speed;
    } else {
      digitalWrite(in3, LOW);
      digitalWrite(in4, LOW);
    }
    analogWrite(enB, motorB_speed);

    // Servo control
    int servoAngle = map(joystickValues[2], 0, 1023, 0, 180);
    if (servoAngle != servoAngle) {
      servoAngle = servoAngle;
      if (servoAngle < 0) {
        servoAngle = 0;
      } else if (servoAngle > 180) {
        servoAngle = 180;
      }
      servoAngle = servoAngle;
      digitalWrite(servoPin, HIGH);
      delayMicroseconds(500 + servoAngle * 2000 / 180);
      digitalWrite(servoPin, LOW);
      delay(20 - servoAngle * 20 / 180);
    }
  }
}

The below code is for the transmitting end .

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(9, 10); // NRF24L01 pins

// Joystick pins
int joystick1X = A0;
int joystick1Y = A1;
int joystick2X = A2;
int joystick2Y = A3;

void setup() {
  // NRF24L01 setup
  radio.begin();
  radio.openWritingPipe(0xF0F0F0F0E1LL); // Address of the receiver
  radio.setPALevel(RF24_PA_HIGH);
}

void loop() {
  int joystick1XValue = analogRead(joystick1X);
  int joystick1YValue = analogRead(joystick1Y);
  int joystick2XValue = analogRead(joystick2X);
  int joystick2YValue = analogRead(joystick2Y);

  int joystickValues[4] = {joystick1XValue, joystick1YValue, joystick2XValue, joystick2YValue};

  radio.write(&joystickValues, sizeof(joystickValues));
  delay(10);
}

[anon56112670]

Be careful if the "control" of a DC motor involves PWM because use of the Servo library disables PWM functionality on certain pins, depending on the processor.

(I moved your topic here because you posted in a section of the forum that specifically asks you not to post there)

[groundFungus]

You have given us very little to work with. Please read the forum guidelines. That thread will give information on what we need to know in order to help you.

It is unlikely that any one will write code for you. Is this for school? We are here to help not as a free code or homework service.

What have you done? Post your best effort at the code. Read the forum guidelines to see how to properly post code and some good information on making a good post.
Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.

Tell us what the code actually does and how that differs from what you want.

Please post a schematic. Written descriptions are always more ambiguous than a drawing. Hand drawn, photographed and posted is fine. Include all pin names/numbers, components, their part numbers and/or values and power supplies.

The more that we know about what you have and what you want to do with it the faster your project can get done.

[groundFungus]

The most difficult part, I think, of the project is getting the RF24 radios to work. Many people struggle with that as a search of this site will show.

If you read and, closely, follow Robin2's simple rf24 tutorial you should be able to get them working. That tutorial sure helped me. The code in the examples has been proven to work many many times. If it does not work for you, there is likely a hardware problem.

Get the radios to work, by themselves, using the tutorial code before adding any other functions.