OPLA IoT Bike Radar

Published March 15, 2022 © MIT

IOT Bicycle Radar

Make a car detecting radar with GPS and IOT.

BeginnerFull instructions provided5,894

Things used in this project

Hardware components

GPS Module (Generic)

Ultrasonic Sensor - HC-SR04 (Generic)

Arduino Oplà IoT Kit

Male/Female Jumper Wires

Software apps and online services

Arduino Web Editor

Arduino IoT Cloud

Hand tools and fabrication machines

Tape, Electrical

Soldering iron (generic)

Story

OPLA IoT Bike Radar

#cloudgames2022

Use the Opla IoT Kit and a couple sensors to make a smart bike computer!

The On-board screen is used to show readings from the ultrasonic sensor, the speed and the ambient. Button 1 displays the temperature, humidity and pressure, Button 2 displays the ultrasonic sensor readings and Button 3 displays the speed. All this data is also shown on the mobile phone.

USING THE IOT CLOUD.

First of all create a new "thing" on IoT Cloud. You will be presented to this screen:

IoT Cloud.

We will start by creating some variables.

Temperature (float) (Refresh periodically every one second)

Humidity (float) (Refresh periodically every one second)

Pressure (float) (Refresh periodically every one second)

Light (int) (Refresh periodically every one second)

Speed (int) (Refresh on change)

Distance (int) (Refresh on change)

It should look something like this:

All the variables

Now its time to attach a board. Plug in your board (for this project I'm using a MKR 1010 WiFi board) and follow the on-screen instructions.

Once the board is attached, connect it to your wifi (The wifi connection has to be a hotspot from a mobile phone).

Now, enter the sketch tab and open the code on the full editor. Then paste the code from this project.

It should look like this:

The sketch

What we are going to do now is delete the ThingPropierties.h tab because its contents are implemented into the code. Now you are ready to upload it into the board!

BUILDING THE DASHBOARD

Now that the board is programed we have to build the dashboard!

Open the Dashboard tab and build a new dashboard.

Press the add button then things and select the Thing we created.

It should look like this:

IoT Dashboard

Now you can change to mobile layout and rearrange the dashboard. Mine looks like this:

Mobile Layout.

HARDWARE CONNECTIONS

Now that all the software is done we can move to the sensors.

The connections for the HC-SR04 Ultrasonic Sensor:

GND TO GND

VCC TO 5V

TRIG TO PIN5

ECHO TO PIN4

The connections for the GPS Module:

GND TO GND

VCC TO 5V

RX TO TX

TX TO RX

Thats all! Slide a battery in the battery slot on the IoT carrier and it should start working!

Thanks to Arduino for sending me an Opla IoT kit! And thanks to the Arduino discord for all the help!

Code

Code

#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>
#include <Arduino_MKRIoTCarrier.h>
#include <TinyGPSPlus.h>
MKRIoTCarrier carrier;
TinyGPSPlus gps;
#define echoPin 4 
#define trigPin 5

long duration; 
bool sensor = false;

const char SSID[]     = SECRET_SSID;   
const char PASS[]     = SECRET_PASS;  

void onPressureChange();

float humidity;
float pressure;
float temperature;
int distance;
int light;
int speed;

void initProperties(){

  ArduinoCloud.addProperty(humidity, READ, 1 * SECONDS, NULL);
  ArduinoCloud.addProperty(pressure, READ, 1 * SECONDS, NULL);
  ArduinoCloud.addProperty(temperature, READ, 1 * SECONDS, NULL);
  ArduinoCloud.addProperty(distance, READ, ON_CHANGE, NULL);
  ArduinoCloud.addProperty(light, READ, 1 * SECONDS, NULL);
  ArduinoCloud.addProperty(speed, READ, 1 * SECONDS, NULL);

}

WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);


void setup() {
  Serial.begin(9600);
  Serial1.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT); 
  delay(500);
  CARRIER_CASE = false;
  carrier.begin();
  carrier.display.setRotation(0);
  delay(1500);


  initProperties();
  ArduinoCloud.addProperty(speed, READ, 1 * SECONDS, NULL);
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  

  setDebugMessageLevel(4);
  ArduinoCloud.printDebugInfo();
}

void loop() {
  ArduinoCloud.update();
  carrier.Buttons.update();
   
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2; 
  Serial.print(distance);
  Serial.println(gps.speed.kmph());



  temperature = carrier.Env.readTemperature();
  humidity = carrier.Env.readHumidity();
  pressure = carrier.Pressure.readPressure();
 
  if (carrier.Buttons.onTouchDown(TOUCH0)) {
    carrier.display.fillScreen(ST77XX_BLACK);
    carrier.display.setTextColor(ST77XX_WHITE);
    carrier.display.setTextSize(2);
 
    carrier.display.setCursor(35, 90);
    carrier.display.print("TEMP: ");
    carrier.display.print(temperature);
    carrier.display.print(" C");
    
    carrier.display.setCursor(35, 110);
    carrier.display.print("HUMI: ");
    carrier.display.print(humidity);
    carrier.display.print(" %");
    
    carrier.display.setCursor(35, 130);
    carrier.display.print("PRESSURE: ");
    carrier.display.print(pressure);
    delay(10);
  }
  
  while (distance < 600) {
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);
    duration = pulseIn(echoPin, HIGH);
    distance = duration * 0.034 / 2; 
    Serial.print(distance);
    carrier.display.fillScreen(ST77XX_BLACK);
    carrier.display.setTextColor(ST77XX_WHITE);
    carrier.display.setTextSize(4);
    carrier.display.setCursor(80, 100);
    carrier.display.print("D:");
    carrier.display.print(distance);
  }


  if (carrier.Buttons.onTouchDown(TOUCH1)) {
    carrier.display.fillScreen(ST77XX_BLACK);
    carrier.display.setTextColor(ST77XX_WHITE);
    carrier.display.setTextSize(4);
    carrier.display.setCursor(65, 100);
    carrier.display.print("D:");
    carrier.display.print(distance);
    delay(10);
    
    
  }
  
  if (carrier.Buttons.onTouchDown(TOUCH2)) {
    carrier.display.fillScreen(ST77XX_BLACK);
    carrier.display.setTextColor(ST77XX_WHITE);
    carrier.display.setTextSize(3);
    carrier.display.setCursor(50, 100);
    carrier.display.print("Sp:");
    carrier.display.print(speed);
    delay(10);
    
    
  }

}

Credits

coloitu_

19 projects • 3 followers

IOT Bicycle Radar

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

OPLA IoT Bike Radar

Schematics

Schematic

Code

Code

Credits

coloitu_

Comments

Embed the widget on your own site

IOT Bicycle Radar

IOT Bicycle Radar

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

OPLA IoT Bike Radar

Schematics

Schematic

Code

Code

Credits

coloitu_

Comments

Related channels and tags