IoT boat connected to the Cloud IoT with Arduino Nano 33 IoT

Published November 29, 2020 © GPL3+

Boat with Arduino Nano 33 IoT on Arduino Cloud

Double helix boat, controlled by Arduino IoT Cloud with siren, patrol LED and laser cannon.

IntermediateFull instructions provided6,340

Boat with Arduino Nano 33 IoT on Arduino Cloud

Things used in this project

Hardware components

Arduino Nano 33 IoT

DC Motor, Miniature

SparkFun Dual H-Bridge motor drivers L298

LED, Blue Green

5 mm LED: Red

Resistor 330 ohm

Buzzer

SG90 Micro-servo motor

Laser Diode, 655 nm

Jumper wires (generic)

Software apps and online services

Arduino IoT Cloud

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Hot glue gun (generic)

Tape, Electrical

Plier, Long Nose

Plier, Needle Nose

Multitool, Screwdriver

Story

IoT boat connected to the Cloud IoT with Arduino Nano 33 IoT

We set up this project to present the Cloud IoT Arduino with the Arduino Nano 33 IoT board and develop the skills of aquatic maker projects, where knowledge of buoyancy in water, movement and tightness are very important.

In the video below, there is the presentation of the boat navigating through the control by the dashboard assembled by Eliezer Neto on the Arduino Cloud IoT, we tested the control by making the boat rotate on its own axis and the navigation forwards and turns to the right. The control of forward navigation was to be desired because one engine was spinning faster than the other, thus compromising the route in a straight line, if your project has the same problem it can be solved by software with a PDI code to compensate for the rotation or hardware with a voltage limiter on the motor pole.

Test and presentation of the IoT boat project

In the assembly schematic there is a gray box with some buttons connected to the analog port of the Arduino nano 33 IoT, this part of the circuit is only to be taken into account if you want to do an offline control by buttons connected by cable, so, thinking about answering this audience that does not have IoT skills, I also provide the code in the Arduino IDE for offline control of the Boat.

Buttons for offline control.

Attention when programming the direction of rotation of the propellers, for the boat to go forward they must rotate in opposite directions, I also advise to lengthen the motor axis so that the propeller is 100% immersed in the water, so the propulsion will be better and the more efficiently developed speed.

Direction of rotation of the engines for the boat to go forward

All electronics at first were assembled with a protoboard for future adjustments, as you need to study the weight and position of each component inside the boat, anything that is unbalancing the weight will make the boat tip over or sail wrong.

Testing balance and water line

That's it, anything I'm available you can ask here in this post or search me on my instagram: @profsandromesquita.

Code

Code to program your boat for offline control

/*
 * Design of a WiFi-controlled boat with the Arduino
 * Nano 33 IoT Board
 * Start: 23/11/2020
 * Finish: 28/11/2020
 * Release: 29/11/2020
 *    Servo Motor included
 * Developers:  Specialist Prof. Sandro Mesquita
 *              Mestre Eliezer Neto
 * Country: Brazil
 * State: Cear
 * City: Fortaleza
 */

#include <Servo.h>

Servo laser;

//Variables of pins
byte  INBRight = 2, INARight = 3 , INBLeft = 4 , INALeft = 5, 
      btFront = A1, btLeft = A0, btBack = A2, btRight = A3,
      blueLed = 6, redLed = 12;
//Button state variables
bool front, left, back, right, Status=0;
unsigned long Time;
int switchTime=0, toneVal;
float sinVal;

void setup() {
  laser.attach(9);
  
  Serial.begin(9600);
  for (byte x = 2; x < 13; x++) {
    pinMode(x, OUTPUT);           //Declares pins as output
  }

  pinMode(btFront, INPUT_PULLUP); //Declares the pin A1 as input pullup
  pinMode(btLeft, INPUT_PULLUP);  //Declares the pin A0 as input pullup
  pinMode(btBack, INPUT_PULLUP);  //Declares the pin A2 as input pullup
  pinMode(btRight, INPUT_PULLUP); //Declares the pin A3 as input pullup

  digitalWrite(redLed, Status);
  digitalWrite(blueLed, !Status);

  Time = millis();
}

void loop() {
  flashes(Status);
  siren();
  control();
  engine();
}

void control() {
  front = digitalRead(btFront);   //Read the button forwar
  left = digitalRead(btLeft);     //Read the button left
  back = digitalRead(btBack);     //Read the button back
  right = digitalRead(btRight);   //Read the button right
}

void engine() {
  if (!front) {
    //Clockwise right engine
    rotationSenseRight(0, 1);
    //Clockwise left engine
    rotationSenseLeft(0, 1);
  }

  else if (!left) {
    //Clockwise right engine
    rotationSenseRight(0, 1);
    //Counterclockwise left engine
    rotationSenseLeft(1, 0);
  }

  else if (!back) {
    //Counterclockwise left engine
    rotationSenseRight(1, 0);
    //Counterclockwise left engine
    rotationSenseLeft(1, 0);
  }

  else if (!right) {
    //Counterclockwise left engine
    rotationSenseRight(1, 0);
    //Clockwise right engine
    rotationSenseLeft(0, 1);
  }

  else {
    //Engine stopped
    rotationSenseRight(0, 0);
    //Engine stopped
    rotationSenseLeft(0, 0);
  }
}

void rotationSenseRight(bool INB, bool INA) {
  digitalWrite(INBRight, INB);
  digitalWrite(INARight, INA);
}

void rotationSenseLeft(bool INB, bool INA) {
  digitalWrite(INBLeft, INB);
  digitalWrite(INALeft, INA);
}

bool flashes(bool led) {
  switchTime = millis() - Time;
  if (switchTime > 1000) {
    led=!led;
    digitalWrite(redLed, led);
    digitalWrite(blueLed, !led);
    Time = millis();
    Status = led;
    return Status;
    if(led){
      servo.write(0);
    }
    else servo.write(180);
  } 
}

void siren(){
  for (int x=0;x<260;x++){
        //converts degrees to radians
        sinVal = (sin(x*(3.1412/180)));
        //now generates a frequency
        toneVal = 3500+(int(sinVal*200));
        //touches the value in the buzzer
        tone(11,toneVal);
        //2ms delay and generates new tone
        delay(2);
    }
}

Credits

SandroMesquita

14 projects • 113 followers

Professor de robótica com Arduino e Raspberry, estudando e aplicando conhecimentos de I.A. usando a Linguagem Python como base.

eliezerne

0 projects • 1 follower

Boat with Arduino Nano 33 IoT on Arduino Cloud