Smart helmet with turn signal

A project by a team of students from the Hebei University of Technology

IntermediateShowcase (no instructions)9 hours170

Things used in this project

Hardware components

Seeed Studio Seeeduino Lotus V1.1 - ATMega328 Board with Grove Interface

Seeed Studio Grove - Ultrasonic Distance Sensor

Adafruit NeoPixel Ring: WS2812 5050 RGB LED

Buzzer

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Laser cutter (generic)

Hot glue gun (generic)

Story

Story behind the project

"Did you wear a helmet while riding today?"Wearing a helmet correctly can absorb most of the impact in an accident, prevent sharp objects from penetrating the head and causing head injury, and play a role in buffering and shock absorption.However, due to the bulkiness of most helmets, many cyclists cannot see the road conditions behind them in time when turning. If the speed of the vehicles behind is too fast and cannot accurately judge your heading, accidents may occur.So a team of students from the Hebei University of Technology designed a smart helmet with a smart turn indicator light function. It is also equipped with an ultrasonic monitoring distance alarm device, to keep your travel safe.

Project Introduction-Functions, How to use

A smart helmet with turn signals is a helmet that can automatically illuminates the turn indicator light when you are riding a turn.When the user is riding a turn, you just need to turn your head in the direction of the turn, and the helmet turn signal will flash in that direction to alert the vehicle behind. If the vehicle behind is too close to the user, the buzzer will sound to remind the user to avoid accidents caused by sudden braking or sharp turns.

Process and steps

1. Group brainstorming

2. Select the sensor

3. Write code and debug

4. Design 3D appearance structure renderings

5. Use a laser cutting machine to cut appearance structural parts

6. Test

7. Assembly project hardware, assembly appearance

#include <Suli.h>
#include <acc_adxl345_Arduino.h>
#include <Wire.h>
#include "LIS3DHTR.h"
#include <Adafruit_NeoPixel.h>

Acc_Adxl345 acc;
LIS3DHTR<TwoWire> LIS;
#define WIRE Wire
Adafruit_NeoPixel pixels_2 = Adafruit_NeoPixel(250, 2, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixels_7 = Adafruit_NeoPixel(250, 7, NEO_GRB + NEO_KHZ800);
char itoaString[64];
Adafruit_NeoPixel pixels_8 = Adafruit_NeoPixel(250, 8, NEO_GRB + NEO_KHZ800);
float _E5_8A_A0_E9_80_9F_E5_BA_A6x;
float _E7_BA_A2_E5_A4_96;

float get3ada16Value(char xyz)
{
  float ax, ay, az;
  acc.get(&ax, &ay, &az);
  if(xyz == 0) return ax;
  if(xyz == 1) return ay;
  if(xyz == 2) return az;
}

void ledStripLightAll(const Adafruit_NeoPixel &pixels, const uint8_t &r,const uint8_t &g,const uint8_t &b)
{
    for(int i=0;i<250;i++){
        pixels.setPixelColor(i, pixels.Color(r,g,b));
        pixels.show();
    }
}

void setup(){
  acc.begin();
  pinMode(5, INPUT);
  pinMode(4, INPUT);
  LIS.begin(WIRE, 0x19);
  LIS.openTemp();
  delay(100);
  LIS.setOutputDataRate(LIS3DHTR_DATARATE_50HZ);
  LIS.setHighSolution(true);

  pixels_2.setBrightness(255);
  pixels_2.begin();

  pixels_7.setBrightness(255);
  pixels_7.begin();

  Serial.begin(9600);

  pinMode(A0, 2);
  pinMode(6, OUTPUT);
  pixels_8.setBrightness(255);
  pixels_8.begin();

}



void loop(){

  while(digitalRead(4) == false){
  }
  Serial.println("printf("+String(LIS.getAccelerationY())+","+String("null")+","+String("null")+","+String("null")+","+String("null")+")");
  if ((abs(LIS.getAccelerationY()) > 0.0001)) {
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(50);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(300);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(50);
    ledStripLightAll(pixels_2, 255, 23, 23);
    delay(800);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(200);
  } else {
    ledStripLightAll(pixels_7, 0, 0, 0);
    delay(10000);
    ledStripLightAll(pixels_2, 0, 0, 0);
    delay(10000);
  }

}

Credits

Gu Jiacheng, Yang Boyun, Qin Jiayue, Jia Xiaodong

Posted by

Naya Lee

Smart helmet with turn signal