I am having some problems coding and programming my device

Projects Programming
1

I am new to programming and confused with the different error messages. I am trying to build a gesture controlled car, so I have two different parts the transceiver and receiver and I just needed help programming those.

This is the website I have been using and where I got the code off of to use. When I put the code in arduino editor to program it error messages come up.

If anyone could give me some guidance it would be much appreciated, Thank you.

2

commented out "I2Cdev.h" in the transmitter code and it compiles alright for me.

did you install that library before trying to compile it?

TRANSMITTER (compiles not tested!)

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include "Wire.h"
//#include "I2Cdev.h"
#include "MPU6050.h"

//Define variables for Gyroscope and Accelerometer data

MPU6050 mpu;
int16_t ax, ay, az;
int16_t gx, gy, gz;

const uint64_t pipeOut = 0xE8E8F0F0E1LL;

RF24 radio(9, 10); //  CN and CSN  pins of nrf

struct MyData {
  byte X;
  byte Y;
};

MyData data;

void setup()
{
  Serial.begin(9600);
  Wire.begin();
  mpu.initialize();

  radio.begin();
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);
  radio.openWritingPipe(pipeOut);
}

void loop()
{
  mpu.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);

  data.X = map(ax, -17000, 17000, 0, 255 ); //Send X axis data
  data.Y = map(ay, -17000, 17000, 0, 255);  //Send Y axis data

  delay(50);
  radio.write(&data, sizeof(MyData));

  Serial.print("Axis X = ");
  Serial.print(data.X);
  Serial.print("  ");
  Serial.print("Axis X = ");
  Serial.println(data.X);
}

RECEIVER(compiles not tested!)

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
const uint64_t pipeIn = 0xE8E8F0F0E1LL;

RF24 radio(9, 10);

// Left & Right motor pins
const int IN1 = 2;
const int IN2 = 3;
const int IN3 = 4;
const int IN4 = 5;

struct MyData {
  byte X;
  byte Y;
};

MyData data;

void setup()
{
  Serial.begin(9600);
  radio.begin();
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);
  radio.openReadingPipe(1, pipeIn);
  radio.startListening();

}

void recvData()
{
  if ( radio.available() ) {
    radio.read(&data, sizeof(MyData));


    if (data.Y < 80) { //Reverse
      digitalWrite(IN1, HIGH);
      digitalWrite(IN2, LOW);
      digitalWrite(IN3, LOW);
      digitalWrite(IN4, HIGH);

    }

    if (data.Y > 145) {//forward
      digitalWrite(IN1, LOW);
      digitalWrite(IN2, HIGH);
      digitalWrite(IN3, HIGH);
      digitalWrite(IN4, LOW);
    }

    if (data.X > 155) {//right turn
      digitalWrite(IN1, LOW);
      digitalWrite(IN2, HIGH);
      digitalWrite(IN3, LOW);
      digitalWrite(IN4, HIGH);
    }

    if (data.X < 80) {//left turn
      digitalWrite(IN1, HIGH);
      digitalWrite(IN2, LOW);
      digitalWrite(IN3, HIGH);
      digitalWrite(IN4, LOW);
    }

    if (data.X > 100 && data.X < 170 && data.Y > 80 && data.Y < 130) { //stop car
      digitalWrite(IN1, LOW);
      digitalWrite(IN2, LOW);
      digitalWrite(IN3, LOW);
      digitalWrite(IN4, LOW);
    }
  }
}

void loop()
{
  recvData();
  Serial.print("X: ");
  Serial.print(data.X);
  Serial.print("    ");
  Serial.print("Y: ");
  Serial.print(data.Y);
  Serial.print("\n");
}
3

What libraries do I need to install?

4

Tmatta42:
What libraries do I need to install?

Really....

nRF24L01.h
RF24.h
I2Cdev.h
MPU6050.h

those usually do not come by default with the IDE, or you have ALL of them installed?

5

That works now thank you