Medicine dispenser machine

1

Good day can someone help us to troubleshoot our issue our medicine dispensing and logging system ?

  1. We’ve built a device using HTML, CSS, JavaScript, Python, and an Arduino Mega 2560 Mini for hardware.
  2. The Raspberry Pi 4B is connected via serial communication.
  3. Regardless of the medicine type input by the user, pin 13 always activates the servo motor for dispensing.
  4. We’ve verified the Python code, and it sends the right data.

Heres the are the adruino and phyton code:

Phyton:

from flask import Flask, request
from flask_cors import CORS
import serial
import time
import json  # Import the json module 

app = Flask(__name__)
CORS(app) 

@app.route('/to_arduino', methods=['POST'])
def to_arduino():
    data = request.json
    print("Data received from JS:", data)
    
    # Determine which function to call based on the quantity value
    quantity = data.get('quantity')
    if quantity == '1':
        send_to_arduino_quantity_1(data)
    elif quantity == '2':
        send_to_arduino_quantity_2(data)
    else:
        print("Unknown quantity value received")
    
    return "Data received successfully" 

def send_to_arduino_quantity_1(data):
    """Function to send data to Arduino when quantity is 1."""
    try:
        # Open a serial connection to Arduino
        ser = serial.Serial('COM8', 9600, timeout=10)
        print("Connection Successful") 

        # Convert data dictionary to a JSON string
        data_str = json.dumps(data) 

        # Store the start time
        start_time = time.time() 

        # Run the loop until 5 seconds have passed
        while time.time() - start_time < 3:
            # Send the encoded data to Arduino
            ser.write(data_str.encode())
            
            # Sleep for a short time before sending the data again
            time.sleep(0.5)  # Adjust sleep time as needed 

            print(data_str)
        
        print("Sending data for quantity 1 completed")
        

    except Exception as e:
        print(f"Error during data sending for quantity 1: {e}")
    finally:
        # Close the serial connection
        ser.close()
        print("Serial connection closed for quantity 1") 

def send_to_arduino_quantity_2(data):
    """Function to send data to Arduino when quantity is 2."""
    try:
        # Open a serial connection to Arduino
        ser = serial.Serial('COM8', 9600, timeout=10)
        print("Connection Successful") 

        # Convert data dictionary to a JSON string
        data_str = json.dumps(data) 

        # Store the start time
        start_time = time.time() 

        # Run the loop until 5 seconds have passed
        while time.time() - start_time < 5:
            # Send the encoded data to Arduino
            ser.write(data_str.encode())
            
            # Sleep for a short time before sending the data again
            time.sleep(0.1)  # Adjust sleep time as needed
            print(data_str) 

        
        print("Sending data for quantity 2 completed") 

    except Exception as e:
        print(f"Error during data sending for quantity 2: {e}")
    finally:
        # Close the serial connection
        ser.close()
        print("Serial connection closed for quantity 2") 

if __name__ == '__main__':
    app.run(host='localhost', debug=True)

Adruino:

const int LED_PIN_1 = 13;
const int LED_PIN_2 = 11;
const int LED_PIN_3 = 9;
const int LED_PIN_4 = 7;
const int LED_PIN_5 = 5;
const int LED_PIN_6 = 4;
const int LED_PIN_7 = 6;
const int LED_PIN_8 = 8;
const int LED_PIN_9 = 10;
const int LED_PIN_10 = 12; 

String received; // Define the 'received' variable globally 

void setup() {
  Serial.begin(9600);  // Start the serial communication at 9600 baud rate
  pinMode(LED_PIN_1, OUTPUT); // Set LED pins as output
  pinMode(LED_PIN_2, OUTPUT);
  pinMode(LED_PIN_3, OUTPUT);
  pinMode(LED_PIN_4, OUTPUT);
  pinMode(LED_PIN_5, OUTPUT);
  pinMode(LED_PIN_6, OUTPUT);
  pinMode(LED_PIN_7, OUTPUT);
  pinMode(LED_PIN_8, OUTPUT);
  pinMode(LED_PIN_9, OUTPUT);
  pinMode(LED_PIN_10, OUTPUT);
} 

void loop() {
  if (Serial.available() > 0) {  // Check if there is incoming data
    received = Serial.readStringUntil('\n');  // Read the data until newline
    Serial.println(received);  // Send back a confirmation message
    messageConditioning(); // Blink and rotate the LEDs upon successful connection
  }
} 

void messageConditioning() {
  // Bioflu
  if (received .equals( "{\"medicineType\": \"BIOFLU\", \"quantity\": \"1\"}")) {
    bioflu_1();
  } else if (received .equals( "{\"medicineType\": \"BIOFLU\", \"quantity\": \"2\"}")) {
    bioflu_2();
  }
  // Paracetamol
  else if (received .equals( "{\"medicineType\": \"PARACETAMOL\", \"quantity\": \"1\"}")) {
    paracetamol_1();
  } else if (received .equals( "{\"medicineType\": \"PARACETAMOL\", \"quantity\": \"2\"}")) {
    paracetamol_2();
  }
  // Ambroxol
  else if (received .equals( "{\"medicineType\": \"AMBROXOL\", \"quantity\": \"1\"}")) {
    ambroxol_1();
  } else if (received .equals( "{\"medicineType\": \"AMBROXOL\", \"quantity\": \"2\"}")) {
    ambroxol_2();
  }
  // Dequadin
  else if (received .equals( "{\"medicineType\": \"DEQUADIN\", \"quantity\": \"1\"}")) {
    dequadin_1();
  } else if (received .equals( "{\"medicineType\": \"DEQUADIN\", \"quantity\": \"2\"}")) {
    dequadin_2();
  }
  // Solmux
  else if (received .equals( "{\"medicineType\": \"SOLMUX\", \"quantity\": \"1\"}")) {
    solmux_1();
  } else if (received .equals( "{\"medicineType\": \"SOLMUX\", \"quantity\": \"2\"}")) {
    solmux_2();
  }
  // Alaxan
  else if (received .equals( "{\"medicineType\": \"ALAXAN\", \"quantity\": \"1\"}")) {
    alaxan_1();
  } else if (received .equals( "{\"medicineType\": \"ALAXAN\", \"quantity\": \"2\"}")) {
    alaxan_2();
  }
  // Mefenamic
  else if (received .equals( "{\"medicineType\": \"MEFENAMIC\", \"quantity\": \"1\"}")) {
    mefenamic_1();
  } else if (received .equals( "{\"medicineType\": \"MEFENAMIC\", \"quantity\": \"2\"}")) {
    mefenamic_2();
  }
  // Bonamine
  else if (received .equals( "{\"medicineType\": \"BONAMINE\", \"quantity\": \"1\"}")) {
    bonamine_1();
  } else if (received .equals( "{\"medicineType\": \"BONAMINE\", \"quantity\": \"2\"}")) {
    bonamine_2();
  }
  // Diatabs
  else if (received .equals("{\"medicineType\": \"DIATABS\", \"quantity\": \"1\"}")) {
    diatabs_1();
  } else if (received .equals( "{\"medicineType\": \"DIATABS\", \"quantity\": \"2\"}")) {
    diatabs_2();
  }
  // Betadex
  else if (received .equals( "{\"medicineType\": \"BETADEX\", \"quantity\": \"1\"}")) {
    betadex_1();
  } else if (received .equals( "{\"medicineType\": \"BETADEX\", \"quantity\": \"2\"}")) {
    betadex_2();
  }
  // Default case
  else {
    allLightsOn();
  }
} 

// Bioflu Output
void bioflu_1() {
  digitalWrite(LED_PIN_1, HIGH);
  delay(500);
  digitalWrite(LED_PIN_1, LOW);
  delay(500);
} 

void bioflu_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_1, HIGH);
    delay(500);
    digitalWrite(LED_PIN_1, LOW);
    delay(500);
  }
} 

void paracetamol_1() {
  digitalWrite(LED_PIN_2, HIGH);
  delay(500);
  digitalWrite(LED_PIN_2, LOW);
  delay(500);
} 

void paracetamol_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_2, HIGH);
    delay(500);
    digitalWrite(LED_PIN_2, LOW);
    delay(500);
  }
} 

// Ambroxol Output
void ambroxol_1() {
  digitalWrite(LED_PIN_3, HIGH);
  delay(500);
  digitalWrite(LED_PIN_3, LOW);
  delay(500);
} 

void ambroxol_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_3, HIGH);
    delay(500);
    digitalWrite(LED_PIN_3, LOW);
    delay(500);
  }
} 

// Dequadin Output
void dequadin_1() {
  digitalWrite(LED_PIN_4, HIGH);
  delay(500);
  digitalWrite(LED_PIN_4, LOW);
  delay(500);
} 

void dequadin_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_4, HIGH);
    delay(500);
    digitalWrite(LED_PIN_4, LOW);
    delay(500);
  }
} 

// Solmux Output
void solmux_1() {
  digitalWrite(LED_PIN_5, HIGH);
  delay(500);
  digitalWrite(LED_PIN_5, LOW);
  delay(500);
} 

void solmux_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_5, HIGH);
    delay(500);
    digitalWrite(LED_PIN_5, LOW);
    delay(500);
  }
} 

// Alaxan Output
void alaxan_1() {
  digitalWrite(LED_PIN_6, HIGH);
  delay(500);
  digitalWrite(LED_PIN_6, LOW);
  delay(500);
} 

void alaxan_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_6, HIGH);
    delay(500);
    digitalWrite(LED_PIN_6, LOW);
    delay(500);
  }
} 

// Mefenamic Output
void mefenamic_1() {
  digitalWrite(LED_PIN_7, HIGH);
  delay(500);
  digitalWrite(LED_PIN_7, LOW);
  delay(500);
} 

void mefenamic_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_7, HIGH);
    delay(500);
    digitalWrite(LED_PIN_7, LOW);
    delay(500);
  }
} 

// Bonamine Output
void bonamine_1() {
  digitalWrite(LED_PIN_8, HIGH);
  delay(500);
  digitalWrite(LED_PIN_8, LOW);
  delay(500);
} 

void bonamine_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_8, HIGH);
    delay(500);
    digitalWrite(LED_PIN_8, LOW);
    delay(500);
  }
} 

// Diatabs Output
void diatabs_1() {
  digitalWrite(LED_PIN_9, HIGH);
  delay(500);
  digitalWrite(LED_PIN_9, LOW);
  delay(500);
} 

void diatabs_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_9, HIGH);
    delay(500);
    digitalWrite(LED_PIN_9, LOW);
    delay(500);
  }
} 

// Betadex Output
void betadex_1() {
  digitalWrite(LED_PIN_10, HIGH);
  delay(500);
  digitalWrite(LED_PIN_10, LOW);
  delay(500);
} 

void betadex_2() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_10, HIGH);
    delay(500);
    digitalWrite(LED_PIN_10, LOW);
    delay(500);
  }
} 

void allLightsOn() {
  for (int i = 0; i < 2; i++) {
    digitalWrite(LED_PIN_1, HIGH);
    digitalWrite(LED_PIN_3, HIGH);
    digitalWrite(LED_PIN_5, HIGH);
    digitalWrite(LED_PIN_7, HIGH);
    digitalWrite(LED_PIN_9, HIGH);
    delay(1000);
    digitalWrite(LED_PIN_1, LOW);
    digitalWrite(LED_PIN_3, LOW);
    digitalWrite(LED_PIN_5, LOW);
    digitalWrite(LED_PIN_7, LOW);
    digitalWrite(LED_PIN_9, LOW); 

    digitalWrite(LED_PIN_2, HIGH);
    digitalWrite(LED_PIN_4, HIGH);
    digitalWrite(LED_PIN_6, HIGH);
    digitalWrite(LED_PIN_8, HIGH);
    digitalWrite(LED_PIN_10, HIGH);
    delay(1000);
    digitalWrite(LED_PIN_2, LOW);
    digitalWrite(LED_PIN_4, LOW);
    digitalWrite(LED_PIN_6, LOW);
    digitalWrite(LED_PIN_8, LOW);
    digitalWrite(LED_PIN_10, LOW);
  }
}

Thanks in advance!

We tried printing the values that will be sent to adruino and the values that are recieved by adruino and the datas matched . We just dont know what error is , we eveb tried making it an if and if else conditional statement but no luck the cervo in pin 13 is still the only one moving

2

I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

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