Polite Passing and Safer Bicycling – the talking bike helmet with turn signals ** Version 1 **

Make the World a Better Place : Polite Passing and Safer Bicycling – the courteous talking bike helmet with turn signals 

My wife asked if I was really going out in public with the helmet....... I did.

Then she asked if I really rode a bike in public with this helmet.......... I did.

She thinks I've totally lost my mind and have no shame.

The short video including field trials  

https://youtu.be/sLN3rrYaoKE

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Polite Passing and Safer Bicycling – the talking bike helmet with turn signals ** Version 1 ** Project14 | Meet the Projects that Make a Positive Impact: Volunteer to Judge the Better World Competition! Volunteer to Judge the Better World with Arduino Competition Project14 | Winners Announcement: Better World with Arduino!

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The Polite Passing talking bicycle helmet helps improve traffic safety and promote proper greenway etiquette. People enjoy nature better and safer with polite & consistent greenway audio communication.

• While bicycling, repeating “passing on your left”grows weary after awhile, especially getting frustrated with road hogs, inattentive pedestrians, runners and bikers on the phone or listening to music.
• Bicycles are pretty quiet and can be fast. They surprise distracted people enjoying the outdoors and nature. Lets keep them safe.
• LED turn signal flashers on the rear give warning to other traffic approaching you from behind. 

Version 1 – Arduino Nano control.   DFPlayer audio + 3W amp + speaker, activated manually with small pushbuttons mounted in helmet.  

Why version 1 ? If time permits there could be a version 2 and a version 3, .....incorporating a Nicla  Sense ME using gyro signals for activation rather than pushbuttons. 

The code: 

#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"

SoftwareSerial mySoftwareSerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

int PassLeftPB; // LOW STATE is PB is pressed
int PassRightPB; // = digitalRead(3); // read the input pin, LOW STATE is PB is pressed
int ApproachingBehindPB; //= digitalRead(4); // read the input pin, LOW STATE is PB is pressed
int GoodDayPB; // = digitalRead(5); // read the input pin, LOW STATE is PB is pressed
int MrSofteePB; // = digitalRead(6); // read the input pin, LOW STATE is PB is pressed
int LeftTurnLED;
int RightTurnLED;


void setup()
{
/// add these digital inputs and outputs specific for the Polite Passing Helmet

pinMode(2,INPUT_PULLUP); // Pin 2 is PASS ON LEFT PB activate on 0
pinMode(3,INPUT_PULLUP); // Pin 3 is PASS ON Right PB activate on 0
pinMode(4,INPUT_PULLUP); // Pin 4 is approaching from BEHIND PB activate on 0
pinMode(5,INPUT_PULLUP); // Pin 5 is have a good day PB activate on 0
pinMode(6,INPUT_PULLUP); // Pin 6 is the Mister Softee Ice Cream Truck Theme activate on 0
pinMode(8,OUTPUT); // Pin 8 is the Left turn signal output
pinMode(9,OUTPUT); // Pin 9 is the Right turn signal output

mySoftwareSerial.begin(9600);
Serial.begin(115200);

// Serial.println();
// Serial.println(F("DFRobot DFPlayer Mini Demo"));
// Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));

if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3.
Serial.println(F("Unable to begin:"));
Serial.println(F("1.Please recheck the connection!"));
Serial.println(F("2.Please insert the SD card!"));

while(true){
delay(0); // Code to compatible with ESP8266 watch dog.
}
}

// Serial.println(F("DFPlayer Mini online."));

myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms

//----Set volume----
myDFPlayer.volume(10); //Set volume value (0~30).
myDFPlayer.volumeUp(); //Volume Up
myDFPlayer.volumeDown(); //Volume Down

//----Set different EQ----
myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);

//----Set device we use SD as default----
myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);

//----Mp3 control----
// myDFPlayer.sleep(); //sleep
// myDFPlayer.reset(); //Reset the module
// myDFPlayer.enableDAC(); //Enable On-chip DAC
// myDFPlayer.disableDAC(); //Disable On-chip DAC
// myDFPlayer.outputSetting(true, 15); //output setting, enable the output and set the gain to 15

//----Mp3 play commands ----
// myDFPlayer.next(); //Play next mp3
// delay(1000);
// myDFPlayer.previous(); //Play previous mp3
// delay(1000);
myDFPlayer.play(4); //Play GDay as a test
delay(5000);
// myDFPlayer.loop(1); //Loop the first mp3
// delay(1000);
// myDFPlayer.pause(); //pause the mp3
// delay(1000);
// myDFPlayer.start(); //start the mp3 from the pause
// delay(1000);
// myDFPlayer.playFolder(15, 4); //play specific mp3 in SD:/15/004.mp3; Folder Name(1~99); File Name(1~255)
// delay(1000);
// myDFPlayer.enableLoopAll(); //loop all mp3 files.
// delay(1000);
// myDFPlayer.disableLoopAll(); //stop loop all mp3 files.
// delay(1000);
// myDFPlayer.playMp3Folder(4); //play specific mp3 in SD:/MP3/0004.mp3; File Name(0~65535)
// delay(1000);
// myDFPlayer.advertise(3); //advertise specific mp3 in SD:/ADVERT/0003.mp3; File Name(0~65535)
// delay(1000);
// myDFPlayer.stopAdvertise(); //stop advertise
// delay(1000);
// myDFPlayer.playLargeFolder(2, 999); //play specific mp3 in SD:/02/004.mp3; Folder Name(1~10); File Name(1~1000)
// delay(1000);
// myDFPlayer.loopFolder(5); //loop all mp3 files in folder SD:/05.
// delay(1000);
// myDFPlayer.randomAll(); //Random play all the mp3.
// delay(1000);
// myDFPlayer.enableLoop(); //enable loop.
// delay(1000);
// myDFPlayer.disableLoop(); //disable loop.
// delay(1000);

//----Read imformation----
// Serial.println(myDFPlayer.readState()); //read mp3 state
// Serial.println(myDFPlayer.readVolume()); //read current volume
// Serial.println(myDFPlayer.readEQ()); //read EQ setting
// Serial.println(myDFPlayer.readFileCounts()); //read all file counts in SD card
// Serial.println(myDFPlayer.readCurrentFileNumber()); //read current play file number
// Serial.println(myDFPlayer.readFileCountsInFolder(3)); //read file counts in folder SD:/03
}

void loop()
{
// static unsigned long timer = millis();

// if (millis() - timer > 3000) {
// timer = millis();
// myDFPlayer.next(); //Play next mp3 every 3 second.
// }

// if (myDFPlayer.available()) {
// printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
// }

//------- my code starts here -----------------------
PassLeftPB = digitalRead(2); // read the input pin, LOW STATE is PB is pressed
PassRightPB = digitalRead(3); // read the input pin, LOW STATE is PB is pressed
ApproachingBehindPB = digitalRead(4); // read the input pin, LOW STATE is PB is pressed
GoodDayPB = digitalRead(5); // read the input pin, LOW STATE is PB is pressed
MrSofteePB = digitalRead(6); // read the input pin, LOW STATE is PB is pressed

if (PassLeftPB==LOW)
{
for (int i=0; i<4; i++)
{
digitalWrite(8, HIGH); // sets the LED on
delay(150); // waits for a second
digitalWrite(8, LOW); // sets the LED off
delay(100); // waits for a second
}

Serial.println(F("PASSING LEFT"));
myDFPlayer.play(1); //Play left turn
delay(2000);

for (int i=0; i<9; i++)
{
digitalWrite(8, HIGH); // sets the LED on
delay(150); // waits for a second
digitalWrite(8, LOW); // sets the LED off
delay(100); // waits for a second
}

}

if (PassRightPB==LOW)
{
for (int i=0; i<4; i++)
{
digitalWrite(9, HIGH); // sets the LED on
delay(150); // waits for a second
digitalWrite(9, LOW); // sets the LED off
delay(100); // waits for a second
}
myDFPlayer.play(2); //Play right turn
delay(2000);

for (int i=0; i<9; i++)
{
digitalWrite(9, HIGH); // sets the LED on
delay(150); // waits for a second
digitalWrite(9, LOW); // sets the LED off
delay(100); // waits for a second
}

}

if (ApproachingBehindPB==LOW)
{
myDFPlayer.play(3); //Play from behind
delay(5000);
}

if (GoodDayPB==LOW)
{
myDFPlayer.play(4); //Play from behind
delay(5000);
}
if (MrSofteePB==LOW)
{
myDFPlayer.play(5); //Play from behind
delay(31000);
}

}

void printDetail(uint8_t type, int value){
switch (type) {
case TimeOut:
Serial.println(F("Time Out!"));
break;
case WrongStack:
Serial.println(F("Stack Wrong!"));
break;
case DFPlayerCardInserted:
Serial.println(F("Card Inserted!"));
break;
case DFPlayerCardRemoved:
Serial.println(F("Card Removed!"));
break;
case DFPlayerCardOnline:
Serial.println(F("Card Online!"));
break;
case DFPlayerUSBInserted:
Serial.println("USB Inserted!");
break;
case DFPlayerUSBRemoved:
Serial.println("USB Removed!");
break;
case DFPlayerPlayFinished:
Serial.print(F("Number:"));
Serial.print(value);
Serial.println(F(" Play Finished!"));
break;
case DFPlayerError:
Serial.print(F("DFPlayerError:"));
switch (value) {
case Busy:
Serial.println(F("Card not found"));
break;
case Sleeping:
Serial.println(F("Sleeping"));
break;
case SerialWrongStack:
Serial.println(F("Get Wrong Stack"));
break;
case CheckSumNotMatch:
Serial.println(F("Check Sum Not Match"));
break;
case FileIndexOut:
Serial.println(F("File Index Out of Bound"));
break;
case FileMismatch:
Serial.println(F("Cannot Find File"));
break;
case Advertise:
Serial.println(F("In Advertise"));
break;
default:
break;
}
break;
default:
break;
}

}