Simple and Cheap Phone Controlled Fireworks Igniter

This is a beginner project in which we'll be lighting fireworks using \r\na Bluetooth enabled phone.

Jan 2, 2017

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fireworks

Devices & Components

Terminal strip block

Male/Female Jumper Wires

2S LiPo battery 300-1000 mah (XT-60 connector)

HC-05 Bluetooth Module

A plastic box with detachable lid

Breadboard (generic)

Heat Shrink Tubing

3 AAA enclosed battery case

XT-60 LiPo connector

Wire Cable - By the Foot

Male/Male Jumper Wires

0.25 mm Nichrome wire

RobotGeek Relay

Arduino Pro Mini 328 - 5V/16MHz

Hardware & Tools

Wire stripper

Screwdriver

Wire cutter

Soldering flux

Cutter

Lighter

Usb to TTL adapter

Soldering iron (generic)

Project description

Code

The code that should be uploaded th the pro mini

arduino

The code establishes a software serial connection (for HC-05) bluetooth module. Then in the loop it listens to the serial connection for incoming communication (from the phone or tablet). When something is received it will be checked for validity in the isPinNrValid function ( it should a pin number from 3 to 9), and then it toggles the pin on for "igniteTime". Ignite time is a constant initially defined by me for 2500 ms, you can change that to whatever you like, i've found out that my fireworks would ignite successfully given that interval.

1#include <SoftwareSerial.h>
2
3SoftwareSerial bluetooth(12, 13); //
4  RX, TX
5const int igniteTime = 2500;
6
7void setup()
8{
9    Serial.begin(9600);	
10
11    bluetooth.begin(9600);    
12}
13
14void loop()
15{
16    if (bluetooth.available()
17  > 0) {
18        char received = bluetooth.read();
19        Serial.println(received);
20    
21        if (isPinNrValid(received)) {
22            togglePin(received);
23
24        }  
25    }
26}
27
28bool isPinNrValid(char pin)
29{
30    return
31  pin >= '3' and pin <= '9';
32}
33
34void togglePin(char pinNr)
35{
36   Serial.print("Toggle
37  pin:");Serial.println(pinNr);
38   String pin;
39   pin += (char) pinNr;
40
41   int number = pin.toInt();
42   pinMode(number, OUTPUT);
43   digitalWrite(number,
44  HIGH); 
45   delay(igniteTime);
46   digitalWrite(number, LOW); 
47}
48

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(12, 13); //
  RX, TX
const int igniteTime = 2500;

void setup()
{
    Serial.begin(9600);	

    bluetooth.begin(9600);    
}

void loop()
{
    if (bluetooth.available()
  > 0) {
        char received = bluetooth.read();
        Serial.println(received);
    
        if (isPinNrValid(received)) {
            togglePin(received);

        }  
    }
}

bool isPinNrValid(char pin)
{
    return
  pin >= '3' and pin <= '9';
}

void togglePin(char pinNr)
{
   Serial.print("Toggle
  pin:");Serial.println(pinNr);
   String pin;
   pin += (char) pinNr;

   int number = pin.toInt();
   pinMode(number, OUTPUT);
   digitalWrite(number,
  HIGH); 
   delay(igniteTime);
   digitalWrite(number, LOW); 
}

The code that should be uploaded th the pro mini

arduino

1#include <SoftwareSerial.h>
2
3SoftwareSerial bluetooth(12, 13); //  RX, TX
4const int igniteTime = 2500;
5
6void setup()
7{
8    Serial.begin(9600);	
9    bluetooth.begin(9600);    
10}
11
12void loop()
13{
14    if (bluetooth.available()  > 0) {
15        char received = bluetooth.read();
16        Serial.println(received);    
17        if (isPinNrValid(received)) {
18            togglePin(received);
19        }  
20    }
21}
22
23bool isPinNrValid(char pin)
24{
25    return  pin >= '3' and pin <= '9';
26}
27
28void togglePin(char pinNr)
29{
30   Serial.print("Toggle  pin:");Serial.println(pinNr);
31   String pin;
32   pin += (char) pinNr;
33   int number = pin.toInt();
34   pinMode(number, OUTPUT);
35   digitalWrite(number,  HIGH); 
36   delay(igniteTime);
37   digitalWrite(number, LOW); 
38}
39

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(12, 13); //  RX, TX
const int igniteTime = 2500;

void setup()
{
    Serial.begin(9600);	
    bluetooth.begin(9600);    
}

void loop()
{
    if (bluetooth.available()  > 0) {
        char received = bluetooth.read();
        Serial.println(received);    
        if (isPinNrValid(received)) {
            togglePin(received);
        }  
    }
}

bool isPinNrValid(char pin)
{
    return  pin >= '3' and pin <= '9';
}

void togglePin(char pinNr)
{
   Serial.print("Toggle  pin:");Serial.println(pinNr);
   String pin;
   pin += (char) pinNr;
   int number = pin.toInt();
   pinMode(number, OUTPUT);
   digitalWrite(number,  HIGH); 
   delay(igniteTime);
   digitalWrite(number, LOW); 
}

Downloadable files

The circuit schematic

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danionescu

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