Created September 19, 2023

AquaVibes Band - Acquatic Vibration for Enhanced Safety

A wearable underwater sensor system that allows visually impaired swimmers to navigate their aquatic environment.

Things used in this project

Hardware components

nRF24 Module (Generic)

Arduino Nano R3

Jumper wires (generic)

Seeed Studio Polymer Lithium Ion Battery - 2200mAh 3.7V

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Hot glue gun (generic)

Plier, Long Nose

Story

Enhancing Safety and Independence for Visually Impaired Swimmers

https://bloximages.newyork1.vip.townnews.com/gwinnettdailypost.com/content/tncms/assets/v3/editorial/b/33/b339083f-6a9b-5b4c-af49-8708699bb583/5a207eac124c5.image.jpg?resize=1200%2C794

WHAT IS ACQUA-VIBES?

AQUAVIBES is an innovative and indigenous wearable sensor system designed to empower visually impaired swimmers. It goes beyond just swimming, making aquatic environments accessible for everyone. This innovative technology allows individuals with visual impairments to confidently navigate the water during training sessions and races, ensuring they never collide with walls or fellow swimmers.

Why AQUAVIBES?

The inspiration behind AQUAVIBES was the recognition of a crucial need within the visually impaired community. Swimming is a liberating and therapeutic activity, but it presents unique challenges for those who rely on their sense of touch and sound. To address these challenges, we created AQUAVIBES with the goal of fostering independence and safety in aquatic settings. We wanted to enable visually impaired individuals to experience the joys of swimming without constraints.

This is an AI generated image.

How Does AQUAVIBES Work?

AQUAVIBES utilizes state-of-the-art technology to provide real-time guidance and protection for swimmers. Here's how it functions:

- Sensor System: AQUAVIBES is equipped with a network of advanced underwater sensors. These sensors emit sound waves that bounce off objects and obstacles in the water, creating a detailed map of the swimmer's surroundings.

- Haptic Feedback: Connected to the sensors is a specialized wearable band worn on the swimmer's wrist. This band delivers haptic feedback in the form of gentle vibrations. When a swimmer approaches a wall or another swimmer, the band vibrates, alerting them to adjust their course.

- Universal Application: While initially designed for visually impaired swimmers, AQUAVIBES' versatility means it can benefit a wide range of aquatic activities and sports, ensuring safety and enhancing the experience for all participants.

AQUAVIBES is more than a technology; it's a bridge to a world of aquatic freedom and independence for individuals with visual impairments. Our mission is to promote inclusivity and safety in water-based activities, opening up new horizons for those who want to explore the depths without fear.

Experience the future of aquatic safety and accessibility with AQUAVIBES!

Schematics

Code

#include <SPI.h>
#include <RF24.h>

RF24 radio(2, 15); // CE, CSN pins on ESP8266
int rssi;
bool motorActive = false; // Flag to track motor state
const int motorPin = 5;  // GPIO pin connected to the motor (adjust as needed)

// RSSI to distance calibration parameters (you will need to calibrate these)
int rssiAt1Meter = -45; // RSSI value at 1 meter
float signalLossExponent = 2.0; // Signal loss exponent (free space path loss exponent)

void setup() {
  Serial.begin(115200);
  radio.begin();
  radio.openReadingPipe(1, 0xF0F0F0E1LL); // Set the address to listen for data
  radio.startListening();

  pinMode(motorPin, OUTPUT);
  digitalWrite(motorPin, LOW); // Ensure the motor is initially off
}

void loop() {
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));

    // Read and calculate RSSI
    rssi = radio.RSSI();

    // Estimate distance based on RSSI and calibration parameters
    float distance = pow(10, ((rssiAt1Meter - rssi) / (10 * signalLossExponent)));

    Serial.print("Received: ");
    Serial.print(text);
    Serial.print(" - RSSI: ");
    Serial.print(rssi);
    Serial.print(" dBm - Estimated Distance: ");
    Serial.print(distance);
    Serial.println(" meters");

    // Check if the distance is less than 1 meter and activate the motor
    if (distance < 1.0 && !motorActive) {
      digitalWrite(motorPin, HIGH); // Turn on the motor
      motorActive = true;
      Serial.println("Motor activated");
    } else if (distance >= 1.0 && motorActive) {
      digitalWrite(motorPin, LOW); // Turn off the motor
      motorActive = false;
      Serial.println("Motor deactivated");
    }
  }
}

#include <SPI.h>
#include <RF24.h>

RF24 radio(2, 15); // CE, CSN pins on ESP8266

void setup() {
  Serial.begin(115200);
  radio.begin();
  radio.openWritingPipe(0xF0F0F0E1LL); // Set the address to send data to
  radio.setPALevel(RF24_PA_HIGH); // Set the power amplifier level (you can adjust this)
}

void loop() {
  char text[] = "Hello, NRF24L01!";
  bool success = radio.write(&text, sizeof(text));

  if (success) {
    Serial.println("Message sent successfully");
  } else {
    Serial.println("Message transmission failed");
  }

  delay(1000); // Send the message every 1 second
}

Credits

Abdullahi Asimiyu

3 projects • 2 followers

I am currently an undergraduate student, I started developing after finishing my secondary school and I had interest in embedded systems..

AquaVibes Band - Acquatic Vibration for Enhanced Safety

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Custom parts and enclosures

Schematics

Schematics

Circuit

circuit2

Schematics

Code

Receiver Code

Transmitter Code