Bracelet Dodges Obstacles

Bracelet Dodges Obstacles © GPL3+

The bracelet can help you know where there is an obstacle.

  • 3,966 views
  • 3 comments
  • 8 respects

Components and supplies

Ard nano
Arduino Nano R3
×1
51gzz5eu9pl. sx425
Ultrasonic Sensor - HC-SR04 (Generic)
×1
Recycled vibrator motor of cell phone
×1
Recycled cables
×1
5v Rechargable battery of 2000mAh.
×1

Necessary tools and machines

09507 01
Soldering iron (generic)
Fabrics and glue for the lining.

About this project

This project is about a bracelet that can help anyone to perceive an obstacle through a small vibration.

In my house I had some components that I used for this project, and I did not know what to do with them, so I thought about how those components can help someone or how they could improve something and after a while of thinking about what to do with them. I realized that it was a good idea to make a bracelet that identifies an obstacle, for people who can not perceive them.

Then I searched the Internet for a bit of this, and I seen many people who did similar projects, with the same goal, and I thought it was great to do it with a different and low cost perspective.

It works in a very simple way. The ultrasonic sensor HC-SR04 connected to the arduino emits a wave, this wave when hitting an obstacle returns and receives the sensor, by means of this we can obtain the distance to which this is an obstacle of the sensor and we program it so that in a range from one certain distance, the vibrator motor will turn on and vibrate.

Code

Code for the braceletArduino
#define echo 8
#define trig 7
long duration,distance;

void setup() {
  
  Serial.begin(9600);
  pinMode(echo,INPUT);
  pinMode(trig,OUTPUT);
  pinMode(5,OUTPUT);
}

void loop() {
  
digitalWrite(trig,LOW);
delayMicroseconds(2);
digitalWrite(trig,HIGH);
delayMicroseconds(10);
digitalWrite(trig,LOW);

duration=pulseIn(echo,HIGH);
distance=(duration/(2*29));

if(distance>=500 || distance<=0){
  Serial.println("____");
  }
else{
  Serial.print(distance);
  Serial.println("cm.");
  digitalWrite(5,LOW);
}
if(distance<=45 && distance>=1){// distance in which the bracelet vibrates, you can edit according to your need

  digitalWrite(5,HIGH);
  Serial.println("Alarm!!!");
}
delay(400);
}

Schematics

Bracelet dodges obstacles-Cirtuit
I conected an rechargable battery of 5v and 2000mAh at the usb entry.
Screenshot (9) yypdwgzzhj
Visible conecctions
Img 1417 xfvvg12gmw

Comments

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