gmrhodes13[Staff] Posted November 6, 2025 Report Posted November 6, 2025 Ran across this while doing some research for other Arduino code and thought I would share. Name of project: Simple Blaster OS v2 Link to project if found online: https://cchobbyfun.com/blogs/news/simple-blaster-os-v2?_pos=17&_sid=10951b994&_ss=r Github link: https://github.com/savall21/Simple-Blaster-OS Sounds: https://github.com/savall21/Simple-Blaster-OS/commit/cc3be9aa928fe0f7675a8a8df918bf19094bed67 Software: Arduino Board: Nano Components: Connections: Fire - Pin D8/SS (11) Mode Change - D3 (6) 128x32 Ammo Display. SCL - D9 (12) SDA - D10 (13) 64x32 Scope Display SCL- SCL/A5/D19 (24) SDA- SDA/A4/D18 (23) DFPlayer Mini RX - TX (1) TX - RX (2) LED Signal Pin - D11/MOSI (14) Arduino Nano Description: A simple Arduino script for a Star Wars blaster You can find out more and see other projects at https://cchobbyfun.com/ The script is designed to play blaster and stun sounds. It also run an animation display on a scope display and also an ammo counter that counts down as the fire button is pressed. The second button serves as a mode change switch modes between blaster and stun. The code is set for 50 shots. When the ammo counter reaches zero and empty sound is played with the fire button is pressed. The mode change button is pressed when the counter reaches zero and resets the counter back to 50. The code also lights a 9 segment addressable LED strip red for blaster and blue for stun. The sounds are played from a DFPLayer mini and loaded on a Micro SD card. The repository includes a set of five sounds. The default sounds are for a E-11 blaster. You can swap the files out for a different blaster. The code its setup to run on a Arduino Nano Every but it will likely run on a wide variety of Arduino boards. The code displays the ammo counter on a 128x32 OLED screen. The scope animation displays on a 64x32 OLED. Links to purchase the Arduino and screens are below. The screens can probably be substituted with any that are the appropriate size. Code: // This script is a simple Blaster OS; By default is plays a blast sound and lights red; Pressing the mode change button // switches to stun; In stun the stun sound plays and lights blue; // Ammo count starts at 50 and counts down with bars; At zero empty click plays until mode change button is pressed for reload // Sounds are read from SD card loaded in DFPLayer mini #include <Adafruit_NeoPixel.h> // DFPlayer Mini library that seems to work with all of the DFPlayer Minis #include <DFPlayerMini_Fast.h> #include <Arduino.h> #include <U8g2lib.h> #if !defined(UBRR1H) #include <SoftwareSerial.h> SoftwareSerial mySerial(2, 1); // RX, TX #endif #ifdef U8X8_HAVE_HW_SPI #include <SPI.h> #endif #ifdef U8X8_HAVE_HW_I2C #include <Wire.h> #endif //128x32 Ammo display on pins D9 & D10 U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C u8g2(U8G2_R3, /* clock=*/ 9, /* data=*/ 10, /* reset=*/ U8X8_PIN_NONE); // Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED //64x32 Scop display on pins A4 & A5 (native Arduino Every SDA SCL pins) U8G2_SSD1306_64X32_1F_1_HW_I2C u8g3(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); // End of constructor list // pin definitions //Fire button connects to pin D8 int fire = 8; //Mode change button connects to pin D3 int modechange = 3; //Addressable LED data pin D11 #define PIN 11 //LED Data Pin #define NUM_LEDS 9 //Number of LEDs that will be lit // global variables //These are the intial values that the script uses to setup counts for mode changes and fire button presses int count1 = 1; int count2 = 1; int lastButtonState1 = 1; int lastButtonState2 = 1; long unsigned int lastPress1; long unsigned int lastPress2; volatile int buttonFlag1; volatile int buttonFlag2; int debounceTime = 20; int ammo = 50; DFPlayerMini_Fast myMP3; //Define addresable LED variables Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800); void setup() { // setup pin modes pinMode(modechange, INPUT_PULLUP); pinMode(fire, INPUT_PULLUP); attachInterrupt(digitalPinToInterrupt(fire), ISR_button1, CHANGE); attachInterrupt(digitalPinToInterrupt(modechange), ISR_button2, CHANGE); Serial.begin(9600); // dont forget to set your serial monitor speed to whatever is set here Serial.println("Running"); strip.begin(); strip.show(); u8g2.begin(); u8g3.begin(); //DFPlayer Setup mySerial.begin(9600); myMP3.begin(mySerial, true); Serial.println("Setting volume to max"); myMP3.volume(30); // Set volume 0 to 30 (max is 30) // Ammo Count Boxes u8g2.setDrawColor(1); u8g2.setFontPosTop(); u8g2.setFontDirection(0); u8g2.clearBuffer(); u8g2.setFont(u8g2_font_inb19_mn); u8g2.setCursor (2, 2); u8g2.print(ammo); //Draw Five Ammo Count Boxes u8g2.drawBox(2,110,30,17); u8g2.drawBox(2,91,30,17); u8g2.drawBox(2,72,30,17); u8g2.drawBox(2,53,30,17); u8g2.drawBox(2,34,30,17); u8g2.sendBuffer(); //Play initial startup sound Serial.println("Play startup sound"); //Triggers the startup sound to play //Format calls the directory on the SD card 01 and the third track; make sure files are named with 001, 002, 003, etc) myMP3.playFolder(01, 3); } void loop() { //Fire button check loop u8g3.firstPage(); do { int a = random(1, 12); int b = random(1, 12); int c = random(1, 12); int d = random(1, 12); int e = random(70, 90); //Draw Scope u8g3.drawCircle(32, 15, 15);//Outer Ring u8g3.drawCircle(32, 15, 2);//Inner ring u8g3.drawLine(20, 15, 15, 15);//left hash u8g3.drawLine(44, 15, 49, 15);//right hash u8g3.drawLine(32, 30, 32, 25);//bottom hash u8g3.drawLine(32, 1, 32, 5);//top hash u8g3.setFont(u8g2_font_tom_thumb_4x6_tf); u8g3.setCursor (46, 6); u8g3.print("TI-23"); u8g3.setCursor(52, 26); u8g3.print("RNG"); u8g3.setCursor(52, 32); u8g3.print(e); u8g3.print("m"); //Top Left Bars u8g3.drawLine(1, 1, a, 1);//bar 1 u8g3.drawLine(1, 3, b, 3);//bar 2 u8g3.drawLine(1, 5, c, 5);//bar 3 u8g3.drawLine(1, 7, d, 7);//bar 4 delay(50); } while ( u8g3.nextPage() ); //Debug statements commented out //Serial.print("LastButton:"); //Serial.println(lastButtonState1); if((millis() - lastPress1) > debounceTime && buttonFlag1) { lastPress1 = millis(); //update lastPress if(digitalRead(fire) == 0 && lastButtonState1 == 1) //if button is pressed and was released last change { Serial.println("Fire:"); count1 = count1 + 1; //Serial.println(count1); //Blast - subroutine to play blast sound and light if (count2 == 1 && ammo != 0){ colorWipe(0xff,0x00,0x00, 2); colorWipe(0x00,0x00,0x00, 2); myMP3.playFolder(01, 1); } //Stun - Subroutine if in stun mode if (count2 == 2 & ammo != 0){ colorWipe(0x00,0x00,0xff, 2); colorWipe(0x00,0x00,0x00, 2); myMP3.playFolder(01, 2); } //Empty - Subroutine if empty; Plays empty sound until mode button is pressed for reload if (ammo == 0){ Serial.println("Empty"); myMP3.playFolder(01, 5); } //Ammo Bar //Five bars - Displays five bars on ammo display based on ammo count above 40 if ((ammo <=50) && (ammo >= 40)) { ammo = ammo - 1; //Five ammo count boxes already drawn Serial.println("50-40"); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //four bars -Displays four bars on ammo display based on ammo count above 30 if ((ammo <= 39) && (ammo >= 30)) { ammo = ammo - 1; //Draw Four Ammo Count Boxes Serial.println("39-30"); u8g2.clearBuffer(); u8g2.drawBox(2,110,30,17); u8g2.drawBox(2,91,30,17); u8g2.drawBox(2,72,30,17); u8g2.drawBox(2,53,30,17); Serial.println(ammo); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //Three bars Displays three bars on ammo display based on ammo count above 20 if ((ammo <= 29) && (ammo >= 20)) { ammo = ammo - 1; //Draw Four Ammo Count Boxes Serial.println("29-20"); u8g2.clearBuffer(); u8g2.drawBox(2,110,30,17); u8g2.drawBox(2,91,30,17); u8g2.drawBox(2,72,30,17); Serial.println(ammo); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //Two bars Displays on bar on ammo display based on ammo count above 10 if ((ammo <= 19) && (ammo >= 10)) { ammo = ammo - 1; //Draw Four Ammo Count Boxes Serial.println("19-10"); u8g2.clearBuffer(); u8g2.drawBox(2,110,30,17); u8g2.drawBox(2,91,30,17); Serial.println(ammo); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //One bars if ((ammo <= 9) && (ammo >= 1)) { ammo = ammo - 1; //Draw Four Ammo Count Boxes u8g2.clearBuffer(); u8g2.drawBox(2,110,30,17); Serial.println(ammo); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //Zero bars if ((ammo == 0)) { //Draw Four Ammo Count Boxes u8g2.clearBuffer(); Serial.println(ammo); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); } //lastButtonState1 = 0; //record the lastButtonState } else if(digitalRead(fire) == 1 && lastButtonState1 == 0) //if button is not pressed, and was pressed last change { lastButtonState1 = 1; //record the lastButtonState } buttonFlag1 = 0; } //Modechange check loop - checks if mode change button has been pressed if((millis() - lastPress2) > debounceTime && buttonFlag2) { lastPress2 = millis(); //update lastPress if(digitalRead(modechange) == 0 && lastButtonState2 == 1) //if button is pressed and was released last change { Serial.println("Mode:"); //Count2 is used to determin mode 1=kill, 2=stun count2 = count2 + 1; Serial.println("Count Increase"); if (count2 == 3) { count2 = 1; } //Play sound for mode change if (ammo != 0) { myMP3.playFolder(01, 4); } //Reload Sequence if (ammo == 0) { Serial.println("Reload"); myMP3.playFolder(01, 3); ammo = 50; //Re-Draw Five Ammo Count Boxes for reload u8g2.drawBox(2,110,30,17); u8g2.drawBox(2,91,30,17); u8g2.drawBox(2,72,30,17); u8g2.drawBox(2,53,30,17); u8g2.drawBox(2,34,30,17); u8g2.setCursor (2, 2); u8g2.print(ammo); u8g2.sendBuffer(); //Decreases count2 by 1 to prevent mode change on reload count2= count2 - 1; delay(1000); } //Serial.println(count2); //lastButtonState2 = 0; //record the lastButtonState } else if(digitalRead(modechange) == 1 && lastButtonState2 == 0) //if button is not pressed, and was pressed last change { lastButtonState2 = 1; //record the lastButtonState } buttonFlag2 = 0; } } void ISR_button1() { buttonFlag1 = 1; } void ISR_button2() { buttonFlag2 = 1; } int SpeedDelay = .1; void colorWipe(byte red, byte green, byte blue, int SpeedDelay) { for(uint16_t i=0; i<NUM_LEDS; i++) { setPixel(i, red, green, blue); showStrip(); delay(SpeedDelay); } } void showStrip() { #ifdef ADAFRUIT_NEOPIXEL_H // NeoPixel strip.show(); #endif #ifndef ADAFRUIT_NEOPIXEL_H // FastLED FastLED.show(); #endif } void setPixel(int Pixel, byte red, byte green, byte blue) { #ifdef ADAFRUIT_NEOPIXEL_H // NeoPixel strip.setPixelColor(Pixel, strip.Color(red, green, blue)); #endif #ifndef ADAFRUIT_NEOPIXEL_H // FastLED leds[Pixel].r = red; leds[Pixel].g = green; leds[Pixel].b = blue; #endif } Wiring: Video: 1 1 Quote
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