Basic Andon System using Arduino Uno R3 and Python

1import tkinter as tk
2from tkinter import messagebox
3import serial
4import threading
5
6# Serial communication setup
7ser = serial.Serial('COM5', 9600)  # Update with your COM port
8ser.flushInput()
9
10# GUI setup
11root = tk.Tk()
12root.title("Andon System")
13
14# Colors
15NORMAL_COLOR = "green"
16ATTENTION_COLOR = "blue"
17CRITICAL_COLOR = "red"
18
19# Create labels for status display
20status_label = tk.Label(root, text="System Status", font=("Arial", 100))
21status_label.pack(pady=20)
22
23status_message = tk.Label(root, text="Normal", font=("Arial", 70), fg=NORMAL_COLOR)
24status_message.pack(pady=20)
25
26# Function to update the GUI based on serial data
27def update_gui():
28    while True:
29        if ser.in_waiting > 0:
30            line = ser.readline().decode('utf-8').strip()
31            if line == "ATTENTION":
32                status_message.config(text="Attention Needed", fg=ATTENTION_COLOR)
33            elif line == "CRITICAL":
34                status_message.config(text="Critical Error", fg=CRITICAL_COLOR)
35            elif line == "NORMAL":
36                status_message.config(text="Normal", fg=NORMAL_COLOR)
37            else:
38                status_message.config(text="Unknown Status", fg="gray")
39        root.update_idletasks()
40        root.update()
41
42# Run the update_gui function in a separate thread
43thread = threading.Thread(target=update_gui, daemon=True)
44thread.start()
45
46# Start the GUI loop
47root.mainloop()

1#include <LiquidCrystal.h>
2
3// Initialize the LCD with the pin numbers
4LiquidCrystal lcd(12, 11, 10, 9, 8, 7);  // RS, E, D4, D5, D6, D7
5
6const int buttonAttentionPin = 2;  // Button for Attention Needed
7const int buttonCriticalPin = 3;   // Button for Critical Error
8const int buzzerPin = 4;           // Buzzer connected to digital pin 4
9
10const int ledNormalPin = 13;       // LED for Normal status
11const int ledAttentionPin = 5;     // LED for Attention Needed status
12const int ledCriticalPin = 6;      // LED for Critical Error status
13
14// State variables
15bool attentionState = false;
16bool criticalState = false;
17unsigned long lastBeepTime = 0;
18bool beepOn = false;
19
20void setup() {
21  Serial.begin(9600); // Start serial communication at 9600 baud
22  pinMode(buttonAttentionPin, INPUT_PULLUP);
23  pinMode(buttonCriticalPin, INPUT_PULLUP);
24  pinMode(buzzerPin, OUTPUT);
25  
26  pinMode(ledNormalPin, OUTPUT);
27  pinMode(ledAttentionPin, OUTPUT);
28  pinMode(ledCriticalPin, OUTPUT);
29
30  lcd.begin(16, 2);  // Initialize the LCD with 16 columns and 2 rows
31  lcd.setCursor(0, 0);
32  lcd.print("  System Status  ");
33  lcd.setCursor(0, 1);
34  lcd.print("     Normal     ");
35
36  noTone(buzzerPin); // Ensure buzzer is off initially
37  digitalWrite(ledNormalPin, HIGH); // Turn on Normal LED
38  digitalWrite(ledAttentionPin, LOW); // Turn off Attention LED
39  digitalWrite(ledCriticalPin, LOW); // Turn off Critical LED
40}
41
42void loop() {
43  static bool lastAttentionButtonState = HIGH;
44  static bool lastCriticalButtonState = HIGH;
45
46  bool currentAttentionButtonState = digitalRead(buttonAttentionPin);
47  bool currentCriticalButtonState = digitalRead(buttonCriticalPin);
48
49  // Handle Attention Needed Button
50  if (currentAttentionButtonState == LOW && lastAttentionButtonState == HIGH) {
51    // Button was pressed
52    if (!attentionState) {
53      attentionState = true;
54      criticalState = false;
55      lcd.setCursor(0, 0);
56      lcd.print("Attention Needed");
57      lcd.setCursor(0, 1);
58      lcd.print(" Press button 2 ");
59
60      Serial.println("ATTENTION");
61      digitalWrite(ledNormalPin, LOW); // Turn off Normal LED
62      digitalWrite(ledAttentionPin, HIGH); // Turn on Attention LED
63      digitalWrite(ledCriticalPin, LOW); // Turn off Critical LED
64    } else {
65      attentionState = false;
66      lcd.setCursor(0, 0);
67      lcd.clear();
68      lcd.print("  System Status  ");
69      lcd.setCursor(0, 1);
70      lcd.print("     Normal     ");
71
72      Serial.println("NORMAL");
73      noTone(buzzerPin); // Turn off buzzer
74      digitalWrite(ledNormalPin, HIGH); // Turn on Normal LED
75      digitalWrite(ledAttentionPin, LOW); // Turn off Attention LED
76      digitalWrite(ledCriticalPin, LOW); // Turn off Critical LED
77    }
78    delay(500); // Debounce delay
79  }
80
81  // Handle Critical Error Button
82  if (currentCriticalButtonState == LOW && lastCriticalButtonState == HIGH) {
83    // Button was pressed
84    if (!criticalState) {
85      criticalState = true;
86      attentionState = false;
87      lcd.setCursor(0, 0);
88      lcd.clear();
89      lcd.print(" Critical Error ");
90      lcd.setCursor(0, 1);
91      lcd.print(" Press Button 1 ");
92
93      Serial.println("CRITICAL");
94      digitalWrite(ledNormalPin, LOW); // Turn off Normal LED
95      digitalWrite(ledAttentionPin, LOW); // Turn off Attention LED
96      digitalWrite(ledCriticalPin, HIGH); // Turn on Critical LED
97    } else {
98      criticalState = false;
99      lcd.setCursor(0, 0);
100      lcd.clear();
101      lcd.print("  System Status  ");
102      lcd.setCursor(0, 1);
103      lcd.print("     Normal     ");
104
105      Serial.println("NORMAL");
106      noTone(buzzerPin); // Turn off buzzer
107      digitalWrite(ledNormalPin, HIGH); // Turn on Normal LED
108      digitalWrite(ledAttentionPin, LOW); // Turn off Attention LED
109      digitalWrite(ledCriticalPin, LOW); // Turn off Critical LED
110    }
111    delay(500); // Debounce delay
112  }
113
114  lastAttentionButtonState = currentAttentionButtonState;
115  lastCriticalButtonState = currentCriticalButtonState;
116
117  // Handle Buzzer for Attention and Critical States
118  if (attentionState || criticalState) {
119    unsigned long currentTime = millis();
120    if (currentTime - lastBeepTime >= 1000) { // Change interval for beep
121      lastBeepTime = currentTime;
122      beepOn = !beepOn;
123      if (beepOn) {
124        tone(buzzerPin, attentionState ? 1000 : 2000); // Lower frequency for Attention, higher for Critical
125      } else {
126        noTone(buzzerPin);
127      }
128    }
129  } else {
130    noTone(buzzerPin);
131  }
132}