Shivam Gupta, Dr. Umesh Dutta, Ritick sethi, Texas Instruments University Program, Energia, Mit, Akash Dubey, Vaibhav Bhatia, Vivek Saini, Muskan Khurana

Created July 31, 2019 © GPL3+

Basketball Counting Machine

To design a basketball net which is able to count the number of successful baskets done by the player each time he/she throws the ball.

IntermediateFull instructions provided2 days1,955

Things used in this project

Hardware components

Texas Instruments MSP-EXP430G2ET Value Line MSP430 LaunchPad™ Development Kit

Ultrasonic Sensor - HC-SR04 (Generic)

HC-05 Bluetooth Module

Software apps and online services

MIT App Inventor 2

Texas Instruments Energia

Story

The story

Aim:

To design a basketball net which is able to count the number of successful baskets done by the player each time he/she throws the ball.

Components Used:

· MSP 430G2ET

· HC-SR04 Ultrasonic sensor

· HC-05 Bluetooth Module

Working:

This prototype uses 2 ultrasonic sensors which are placed above and below the basketball net and are directly connected to the MSP 430G2ET. When the prototype starts, the sensor placed above the net gets the data from the MSP to activate and deactivate automatically without any human assistance.

As it starts, the ultrasonic waves travel from the sensor and after hitting any obstruction in their path, they travel back to the sensor. The time taken by the waves in the whole process is calculated by the sensor and it is then sent to the MSP from which the distance travelled by the waves can be calculated by performing required data analytics and necessary calculations.

Distance travelled by the ultrasonic waves = Distance between the sensor and the obstacle

If when the ball reaches in the vicinity of the net (i.e. up to range of 15 cm), the ultrasonic sensor 2 which is placed below the net gets activated and calculates distance in the same way as above. If the ball passes through it, MSP increases the count by 1 and data is sent to the mobile application as well as gets updated live at the web server in the real time else count remains unchanged.

Figure of Merits:

· Is very cheap and easy to handle

· Ideal for shot practicing for players to develop their skills

· Score can be seen live anywhere and anytime

· Works in real time

· Very less power requirement and low maintenance

· Durable for any temperature and weather conditions

· Can be used by the athletes to track the performance

Webpage Link:

https://sainivivek62.000webhostapp.com/basketballweb.php

Webpage:

Mobile Application Layout:

Block Code :

Video:

Code

CODE

const int trigPin = 8;  // to declare pin 8 of msp as trig for ultrasonic sensor 1
const  int echoPin = 6;  // to declare pin 6 of msp as echo for ultrasonic sensor 1

const int trigPin_2 = 19;  // to declare pin 19 of msp as trig for ultrasonic sensor 2
const int echoPin_2 = 5;  // to declare pin 5 of msp as echo for ultrasonic sensor 2

long duration;  // declare a long integer variable duration to store time for sensor 1
long duration_2;  // declare a long integer variable duration_2 to store time for sensor 2

int distance;  // declare a integer distance to store distance for sensor 1
int distance_2;  // declare a integer distance_2 to store distance for sensor 2

int counter = 0;  // declare a variable counter to store the number of baskets

void setup() 
{
  // initialise output pins
  pinMode(trigPin, OUTPUT);
  pinMode(trigPin_2, OUTPUT);

  // initialise input pins
  pinMode(echoPin, INPUT);
  pinMode(echoPin_2, INPUT);

  // initialise serial communication
  Serial.begin(9600);

  // print message serially
  Serial.println("Started");
}
void loop()
{
  // for the ultrasonic sensor 1
  digitalWrite(trigPin,HIGH);  // to enable flow of ultrasonic waves
  delay(10);
  digitalWrite(trigPin,LOW);  // to disable flow of ultrasonic waves
  duration = pulseIn(echoPin,HIGH);
  distance = (duration/2)/29.1;  // to calculate the distance
//  Serial.println(distance);  // print the value of distance (optional)
  if (distance<15)  // if the obstackle is upto distance of 15 cm from the sensor
  {
    // if above condition is true, sensor 2 is enabled
    // for the ultrasonic sensor 2
    digitalWrite(trigPin_2,HIGH);  // to enable flow of ultrasonic waves
    delay(10);
    digitalWrite(trigPin_2,LOW);  // to disable flow of ultrasonic waves
    duration_2 = pulseIn(echoPin_2,HIGH);  // to disable flow of ultrasonic waves
    distance_2 = (duration_2/2)/29.1;  // to calculate the distance
  //  Serial.println(distance_2);  // print the value of distance_2 (optional)
    
    if (distance_2<14) //to check if the ball lies in the range of upto 15cm from the net
    {
      // if the above condition comes true
      counter++;  // increase the value of the counter by 1
      Serial.print("*");  // send the opening bit
      Serial.print(counter);  // send the value of the counter 
      Serial.print("#");  // send the closing bit
      Serial.print('\n');  // start printing further data from a new line
      delay(1000);
    }
  }
}