In today’s digital era, where prolonged sitting has become a routine part of work, study, and leisure activities, poor posture is a growing concern. Extended hours of improper sitting can lead to back pain, neck strain, and long-term musculoskeletal disorders. To address this health issue in a simple and cost-effective manner, we have developed a Seating Posture Correction Device using Arduino Uno, an ultrasonic sensor, buzzer, RGB LED, and two push buttons.

This smart system helps users maintain a healthy seating posture by continuously monitoring the distance between their upper body and a reference point (like the backrest of a chair or a monitor). The user sets their correct sitting distance using a button. The system then defines a safety range (±10 cm of the set distance). Whenever the user leans too far forward or backward—indicating a deviation from correct posture—the device provides instant feedback using a buzzer sound and a color-coded LED alert. It’s a compact, user-friendly tool to promote better ergonomic habits and prevent posture-related health issues.

Objective of Seating Posture Correction Device:

To design a low-cost, non-intrusive device that monitors the user’s sitting posture using an ultrasonic sensor. The user sets their “ideal” seating distance using a button, and the device continuously checks whether they maintain that posture. If the user leans forward or backward beyond a safe range (±10 cm), the system alerts them with a buzzer and RGB LED

Components used in Seating Posture Correction Device:

Working Principle of Seating Correction Posture Device:

Setup Phase:

• On pressing the “Set Posture” button, the system reads and stores the current distance from the ultrasonic sensor.
• It defines a valid range:
  Min_Range = Distance - 10 cm
Max_Range = Distance + 10 cm

Monitoring Phase:

• The device constantly measures the distance in real-time.
• If the user leans too far forward or backward (distance is outside the valid range), the buzzer sounds, and the RGB LED turns red.
• If within the range, the RGB LED glows green, and the buzzer remains silent.

Resetting Reference:

• Pressing the “Reset” button clears the saved distance, allowing a new posture reference to be set.

Circuit Diagram of Seating Posture Correction Device:

➤Ultrasonic Sensor (HC-SR04):

• VCC → 5V
• GND → GND
• TRIG → Pin 5
• ECHO → Pin 6

➤ Button:

• “Set” Button → Pin 4 (with pull-down resistor)

➤ Buzzer:

• Positive → Pin 13
• Negative → GND

➤ RGB LED:

• Red → Pin 2 (with 220Ω resistor)
• Green → Pin 3 (with 220Ω resistor)
• Blue → Not used or Pin 7 (optional)

Arduino Code for Seating Posture Correction Device:

#define trigPin 9
#define echoPin 10
#define buzzer 11
#define buttonSet 2
#define buttonReset 3

#define redPin 5
#define greenPin 6

long duration;
float distance;
float referenceDistance = 0;
float minRange = 0;
float maxRange = 0;

bool postureSet = false;

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(buzzer, OUTPUT);
  
  pinMode(buttonSet, INPUT);
  pinMode(buttonReset, INPUT);
  
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  
  Serial.begin(9600);
}

void loop() {
  // Read Distance
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2; // in cm

  // Set Reference Posture
  if (digitalRead(buttonSet) == HIGH) {
    referenceDistance = distance;
    minRange = referenceDistance - 10.0;
    maxRange = referenceDistance + 10.0;
    postureSet = true;
    Serial.println("Posture set!");
    delay(500); // debounce
  }

  // Reset Posture
  if (digitalRead(buttonReset) == HIGH) {
    referenceDistance = 0;
    postureSet = false;
    Serial.println("Posture reset!");
    delay(500); // debounce
  }

  if (postureSet) {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm");

    if (distance < minRange || distance > maxRange) {
      // Alert: Bad posture
      digitalWrite(buzzer, HIGH);
      digitalWrite(redPin, HIGH);
      digitalWrite(greenPin, LOW);
    } else {
      // Good posture
      digitalWrite(buzzer, LOW);
      digitalWrite(redPin, LOW);
      digitalWrite(greenPin, HIGH);
    }
  } else {
    // Idle State
    digitalWrite(buzzer, LOW);
    digitalWrite(redPin, LOW);
    digitalWrite(greenPin, LOW);
  }

  delay(200);
}

Features and Benefits:

• Portable – Compact enough for desks, offices, or classrooms.
• Easy to Use – One button press to set posture, one to reset.
• Non-Invasive – No camera or wearables.
• Customizable – ±10 cm range can be adjusted for sensitivity.

Applications of Seating Posture Correction Device:

The Seating Posture Correction Device can be used in various environments where prolonged sitting is common. Here are some practical applications:

1. Office Workstations

• Helps employees maintain proper sitting posture during long working hours.
• Encourages ergonomic awareness in workplace wellness programs.

2. Study Desks for Students

• Promotes healthy posture among students during study sessions.
• Prevents slouching and forward head posture while reading or using a laptop.

3. Home Offices and Remote Work

• A useful personal health device for those working from home.
• Easy to set up and use without the need for wearables or apps.

4. Libraries and Reading Rooms

• Can be installed at reading tables to gently alert users when they adopt poor posture.
• Encourages long-term posture correction habits.

5. Rehabilitation and Physical Therapy

• Assists patients undergoing posture correction therapy.
• Helps physiotherapists monitor and train individuals in maintaining correct sitting form.

6. Gaming and Entertainment Zones

• Can be used in gaming chairs or setups as a wellness accessory.
• Encourages gamers to avoid unhealthy sitting positions during extended gameplay.

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If you need this Project with or without Modifications or Customization then you can contact us through WhatsApp. We can deliver you this Project in the Following Ways.

Project Code:
we can provide you Project Code along with Zoom Assistant, through Zoom meeting for Setup of this Project or any other Arduino Project of your need.

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if you can not make this project yourself then you can use this option. We will assemble the Project and will ship it to your Doorstep with Safe Packaging.

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