Arduino Projects

2019年8月13日星期二

Arduino Code (Arduino)

#define USE_ARDUINO_INTERRUPTS true 
#include <PulseSensorPlayground.h>    
#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX
const int PulseWire = 0;
int tempPin = 1;
int ECGPin = 2;
String incomingByte;
int value;
int myBPM =0;
int finalBPM ;
float volts=0.0;
float cel =0;
String stringTemp;
String stringBPM;
bool is_data_send=false;
bool ISBP=false;
bool ISECG=false;
bool ISHR=false;
bool IStemp=false;
const int LED13 = 13;          
int Threshold = 550;
String data="";

                               
PulseSensorPlayground pulseSensor; 


void setup() {   

Serial.begin(38400);
Serial.println("Enter AT commands:");
mySerial.begin(38400);
  
  pulseSensor.analogInput(PulseWire);   
  pulseSensor.blinkOnPulse(LED13);    
  pulseSensor.setThreshold(Threshold);   

 
   if (pulseSensor.begin()) {
    Serial.println("We created a pulseSensor Object !");  
  }
}



void loop() {

if (mySerial.available()) {  
  
    incomingByte = mySerial.read();
    Serial.println(incomingByte);
    
    if(incomingByte=="49")
    {ISECG=false;ISBP=false;ISHR=false;IStemp=true;is_data_send=true;}
    else if(incomingByte=="50")
    {ISECG=false;ISBP=false;ISHR=true;IStemp=false;is_data_send=true;}
    else if(incomingByte=="51")
    {ISECG=false;ISBP=false;ISHR=true;IStemp=true;is_data_send=true;}
    else if(incomingByte=="52")
    {ISECG=false;ISBP=true;ISHR=false;IStemp=false;is_data_send=true;}
    else if(incomingByte=="53")
    {ISECG=false;ISBP=true;ISHR=false;IStemp=true;is_data_send=true;}
    else if(incomingByte=="54")
    {ISECG=false;ISBP=true;ISHR=true;IStemp=false;is_data_send=true;}
    else if(incomingByte=="55")
    {ISECG=false;ISBP=true;ISHR=true;IStemp=true;is_data_send=true;}
    else if(incomingByte=="56")
    {ISECG=true;ISBP=false;ISHR=false;IStemp=false;is_data_send=true;}
    else if(incomingByte=="57")
    {ISECG=true;ISBP=false;ISHR=false;IStemp=true;is_data_send=true;}
    else if(incomingByte=="65")
    {ISECG=true;ISBP=false;ISHR=true;IStemp=false;is_data_send=true;}
    else if(incomingByte=="66")
    {ISECG=true;ISBP=false;ISHR=true;IStemp=true;is_data_send=true;}
    else if(incomingByte=="67")
    {ISECG=true;ISBP=true;ISHR=false;IStemp=false;is_data_send=true;}
    else if(incomingByte=="68")
    {ISECG=true;ISBP=true;ISHR=false;IStemp=true;is_data_send=true;}
     else if(incomingByte=="69")
    {ISECG=true;ISBP=true;ISHR=true;IStemp=false;is_data_send=true;}
     else if(incomingByte=="70")
    {ISECG=true;ISBP=true;ISHR=true;IStemp=true;is_data_send=true;}
    
}
//Getting Values from Sensors
if(is_data_send)
{
  int counter=0;
  if(IStemp||ISHR){
  while(counter<10){
  if(IStemp){
    value=analogRead(tempPin);
    volts=(value/1024.0)*5.0;      //conversion to volts
    cel = cel+(volts*100.0);
  }
  if(ISHR){
    if (pulseSensor.sawStartOfBeat()) { 
   myBPM = myBPM+pulseSensor.getBeatsPerMinute();
}
      }
  
    counter=counter+1;
    }}
  if(ISBP){
    }
  int counter2=0;
  if(ISECG){
  while(counter2<500){
  if((digitalRead(2)==1)||(digitalRead(3)==1)){}
  else{
    String abc=String(analogRead(ECGPin));
    Serial.println(abc);
      data+=abc+"|";
  }
  counter2=counter2+1;
  }
  }
}
//Sending Data
  if(is_data_send){
    if(ISBP){
    }
    if(ISHR){
    float final_bpm=myBPM/10;
    stringBPM = String(final_bpm);
    data+=stringBPM+"|";
    }
     if(IStemp){
      float final_temp=cel/10;
      stringTemp = String(final_temp);
      data+=stringTemp+"|";
     }
  
  
    Serial.print("Data sending");
    Serial.print(data);    
    //Serial.print(stringTemp+"|"+stringBPM);
    mySerial.print(data);
    mySerial.println();
    is_data_send=false;
  }
delay(20);                    // considered best practice in a simple sketch.

}

2019年8月11日星期日

Lightning (Arduino)

/*
 * Original Sketch from DFRobot.com
 * Modified by Alex Wulff (www.AlexWulff.com)
 * on 7/25/19
 */

#include "Lib_I2C.h"
#include "DFRobot_AS3935_I2C.h"

#define AS3935_CAPACITANCE  96
// Indoor/outdoor mode selection
#define AS3935_INDOORS      0
#define AS3935_OUTDOORS     1
#define AS3935_MODE         AS3935_INDOORS
// Enable/disable disturber detection
#define AS3935_DIST_DIS     0
#define AS3935_DIST_EN      1
#define AS3935_DIST         AS3935_DIST_EN
// I2C address
#define AS3935_I2C_ADDR     AS3935_ADD3

#define IRQ_PIN             0
#define BUZZ                11
#define LIGHT               13

void AS3935_ISR();
DFRobot_AS3935_I2C  lightning0((uint8_t)IRQ_PIN, (uint8_t)AS3935_I2C_ADDR);

// Needs to be voltatile because this variable is accessed in an ISR
volatile int8_t AS3935_ISR_Trig = 0;

void setup()
{
  Serial.begin(115200);
  Serial.println("Lightning Sensor Start");

  I2c.begin();
  I2c.pullup(true);
  I2c.setSpeed(1);
  delay(2);

  lightning0.defInit();
  lightning0.manualCal(AS3935_CAPACITANCE, AS3935_MODE, AS3935_DIST);
  attachInterrupt(digitalPinToInterrupt(IRQ_PIN), AS3935_ISR, RISING);

  pinMode(BUZZ, OUTPUT);
  pinMode(LIGHT, OUTPUT);
}

void loop()
{
  // blink light while waiting for lightning
  while (AS3935_ISR_Trig == 0) {
    digitalWrite(13, HIGH); 
    delay(700); 
    digitalWrite(13, LOW); 
    delay(200);
  }
  
  delay(5);

  // Reset interrupt flag variable
  AS3935_ISR_Trig = 0;
  
  // Get interrupt source
  uint8_t int_src = lightning0.getInterruptSrc();

  // lightning nearby
  if (int_src == 1) {
    uint8_t lightning_dist_km = lightning0.getLightningDistKm();

    if (lightning_dist_km == 1) {
      Serial.println("Lightning overhead!");
    }
    
    else if ((lightning_dist_km >= 5) && (lightning_dist_km <= 40)) {
      Serial.println("Lightning occurs!");
      Serial.print("Distance: ");
      Serial.print(lightning_dist_km);
      Serial.println(" km");
    }
    
    else if (lightning_dist_km == 0x3F){
      Serial.println("Out of range.");
    }

    // Get lightning energy intensity
    uint32_t lightning_energy_val = lightning0.getStrikeEnergyRaw();
    Serial.print("Intensity: ");
    Serial.print(lightning_energy_val);
    Serial.println("");

    // round to nearest tens place
    float distf = (float)lightning_dist_km;
    int dist_tens = (int)roundf(distf / 10);
    
    // buzz to get attention
    for (int i = 0; i < 20; i++) {
      digitalWrite(BUZZ, HIGH);
      delay(25);
      digitalWrite(BUZZ, LOW);
      delay(25);
    }

    if (lightning_dist_km <= 5) {dist_tens = 1;}

    // buzz to indicate distance
    for (int i = 0; i < dist_tens; i++) {
      digitalWrite(BUZZ, HIGH);
      delay(1000);
      digitalWrite(BUZZ, LOW);
      delay(1000);
    }
  }

  // interference detected
  else if (int_src == 2)
  {
    for (int i = 0; i < 3; i++) {
      digitalWrite(LIGHT, HIGH);
      delay(200);
      digitalWrite(LIGHT, LOW);
      delay(200);
    }
    
    Serial.println("interference detected");
  }

  // too much noise
  else if (int_src == 3)
  {
    for (int i = 0; i < 5; i++) {
      digitalWrite(LIGHT, HIGH);
      delay(100);
      digitalWrite(LIGHT, LOW);
      delay(100);
    }
    Serial.println("Noise level too high!");
  }

}

//ISR function just sets the flag to 1
void AS3935_ISR()
{
  AS3935_ISR_Trig = 1;
}

2019年8月6日星期二

2019年8月13日星期二

Things used in this project

Hardware components

Arduino UNO & Genuino UNO ×1

DFRobot DFPlayer Mini MP3 ×1

Seeed 4 Digit Display ×1

Adafruit Speaker: 3W, 4 Ohm ×1

PAM8403 Audio Amplifier 3W + 3W (Optional) ×1

9V 1A Switching Wall Power Supply ×1

Resistor 1k ohm ×2

SparkFun Pushbutton switch 12mm ×3

Breadboard (generic) ×1

Jumper wires (generic) ×1

Software apps and online services

Verbose Text to Speech - NCH Software

Story

1) Introduction

The Talking Clock 2 (Bilingual) is the new version of Talking Clock I have published some time ago.

The code was updated to support two languages (English/Portuguese) and new features were introduced into the code:

Mode 1: Set the time (hour & minute)

Mode 2: The clock talks every minute

Mode 3: The clock talks every hour

Mode 4: The clock speaks the time when a button is pressed

Mode 5: Set the language for English or Portuguese

Note: The language status is stored in Arduino - EEPROM to keep this information even when it is restarted or turned on.

It was introduced as optional a mini amplifier PAM8403 (3W + 3W) for better control of the sound level in the speaker. I am using only one speaker (one sound channel), but you can add another if you want.

Talking Clock - Version 2 - Bilingual

2). Components

Arduino UNO R3 DFPlayer Mini MP3 Player - DFR0299 DFPlayer Mini - Connections SD Mini - Memory Card Display TM1637 PAM8403 - Mini Audio Amplifier (3W+3W) Speaker 3W Resistor 1K Ohm Pushbutton Switch Breadboard Jumpers

Note: Details of DFPlayer Mini on: https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299

3) Schematics

Important: It is not recommended to use the USB port as a power source in this project. Connect the Arduino to an external power source of 9V x 1A (or higher) because there are power surges when the speaker is working, causing Arduino instability.

Breadboard Diagram

4) SD Card & MP3 files

A SD card must be formatted for FAT32 and a folder named "MP3" must be created. In MP3 folder are stored all files of voices (74 in total) in English and Portuguese.

In mode 3, when the clock speaks every hour, there is a "church bell" sound that only works between 08:00 and 18:00. This sound is repeated as many times as the hour of that moment.

Note: All files must be named according to pattern "nnnn.mp3", starting in "0000.mp3".

MP3 Files List

5) Setup

There are 3 push buttons used for the operation with following functions:

#1:

Moves to the next operational mode.

#2:

Adjust the hour in Setup Mode

Speaks the time in Press Button Mode

Set to Portuguese in Language Mode.

#3:

Adjust the minute in Setup Mode

Speaks the time in Press Button Mode

Set to English in Language Mode.

Note: To move to next mode, press the button #1 until the next speech starts (blue LED of DFPlayer is on in this moment).

This project includes hardware which will measure blood pressure, heart rate, ECG & temperature, and send to Android application & Firebase.

Things used in this project

Hardware components

Arduino UNO & Genuino UNO ×1

Software apps and online services

Android Studio

Arduino IDE

Google Firebase

Hand tools and fabrication machines

10 Pc. Jumper Wire Kit, 5 cm Long

Story

Introduction

Work Flow:

First of all we have to make Communication between Arduino and android app using Bluetooth. for the android code for this communication kindly follow the link below

this is the complete architecture of our project.

Circuit Picture:

I hope you enjoy this project

Schematics

Block Diagram

Code

2019年8月11日星期日

The link of micro: Maqueen micro:bit Educational Programming Robot Platform:

We also have many micro: Maqueen kits!

Introduction

Best DIY Robot kit for beginners - Micro:Bit

DFRobot micro Maqueen Motor and Line Sensor

Amazing! DIY Robot kit Maqueen V2.0 - BBC Micro:Bit

Amazing DIY Robot Kit

Maqueen micro:bit Educational Programming Robot Platform

Arduino UNO R3 DFPlayer Mini MP3 Player - DFR0299 DFPlayer Mini - Connections

SD Mini - Memory Card Display TM1637 PAM8403 - Mini Audio Amplifier (3W+3W)

Speaker 3W Resistor 1K Ohm Pushbutton Switch

Breadboard Jumpers