Henry Mayne
Published © GPL3+

DIY Ultraviolet Sterilization Device (UVClean)

Protect yourself from COVID-19 with this all new device! The UVClean emits UVC radiation that destroys the DNA of viruses and bacteria.

IntermediateShowcase (no instructions)9,214
DIY Ultraviolet Sterilization Device (UVClean)

Things used in this project

Hardware components

GTL3 Bulb
×1
E17 Socket
×1
Power Supply
×1
Boost Converter
×1
MOSFET Board
×1
5W 150 Ohm Resistors
×1
Arduino Nano R3
Arduino Nano R3
×1
Rotary Encoder with Push-Button
Rotary Encoder with Push-Button
×1
OLED Screen
×1
Toggle Switch
×1
DC POWER JACK 2.1MM BARREL-TYPE PCB MOUNT
TaydaElectronics DC POWER JACK 2.1MM BARREL-TYPE PCB MOUNT
×1
Buzzer, Piezo
Buzzer, Piezo
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

3D Printer (generic)
3D Printer (generic)
Soldering iron (generic)
Soldering iron (generic)

Story

Read more

Custom parts and enclosures

Handle Left

Window Panel

Back Plate

Front Plate

Handle Right

Shroud Plate

Spine Left

Spine Right

Schematics

UVClean Circuit Diagram

This shows the connections required to make the circuit work.

Code

UVClean Code

C/C++
Upload this to an Arduino nano
#define CLK 3
#define DT 4
#define SW 5
#define BUZZ 6
#define BULB 2
int counter = 0;
int state;
int Laststate;
int menuID = 1;
int menuChange = 0;
int buttonPress = 0;
int toneID;
int passwordTemp = 0;
int passwordID = 1;
int password1 = 0;
int password2 = 0;
int password3 = 0;
int password4 = 0;
int access = 0;
int leave = 0;
int minutes = 0;
int seconds10 = 0;
int seconds1 = 0;
unsigned long startMillis;

void tone1();
void tone2();
void tone3();
void tone4();
void tone5();



#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);




void setup() {
  pinMode(CLK,INPUT);
  pinMode(DT,INPUT);
  pinMode(SW,INPUT);
  pinMode(BULB, OUTPUT);
  pinMode(BUZZ, OUTPUT);
  Serial.begin(9600);
  
  Laststate = digitalRead(CLK);

  digitalWrite(BULB, LOW);
  Serial.print("BULB OFF");





    // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  display.clearDisplay();

    display.clearDisplay();

  for(int16_t i=0; i<max(display.width(),display.height())*1.3; i+=10) {
    display.drawTriangle(
      display.width()/2  , display.height()/2-i,
      display.width()/2-i, display.height()/2+i,
      display.width()/2+i, display.height()/2+i, SSD1306_WHITE);
      display.setTextSize(3);
      display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
      display.setCursor(2,16);
      display.print(F("UVClean"));
    display.display();
    delay(1);
    tone(BUZZ, 128*(i/10));
  }
  noTone(BUZZ);
  
  tone(BUZZ, 1024);
  delay(50);
  //noTone(BUZZ);
  //delay(10);
  tone(BUZZ, 2048);
  delay(50);
  tone(BUZZ, 4096);
  delay(50);
  noTone(BUZZ);
  delay(2500);
  
  
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(passwordTemp);
        display.println(F(" _ _ _"));
        display.display();

  while(access == 0) {
  state = digitalRead(CLK);
  if(state != Laststate)
  {
    if(digitalRead(DT) != state)
    {
      counter++;
      }
      else
      {
        counter--;
        }
  
         //Serial.println(counter);
  }
    
    Laststate= state;

    if(counter == 4) {
      counter = 0;
      menuChange = 1;
      passwordTemp++;
      toneID = 1;
    }

    if(counter == -4) {
      counter = 0;
      menuChange = 1;
      passwordTemp--;
      toneID = 1;
    }
    if(digitalRead(SW) != 1) {
      toneID = 2;
      menuChange = 1;
      switch(passwordID) {      //PASSCODE CHANGE AREA***************************
        case 1:
        if(passwordTemp == 3) { //Enter desired first digit
          password1 = 1;
        }
        break;
        case 2:
        if(passwordTemp == 3) { //enter desired second digit
          password2 = 1;
        }
        break;
        case 3:
        if(passwordTemp == 9) { //enter desired third digit
          password3 = 1;
        }
        break;
        case 4:
        if(passwordTemp == 9) { //enter desired fourth digit
          password4 = 1;
        }//                     *************************************************
        break;
      }
      passwordID++;
      passwordTemp = 0;
      delay(250);
    }

    if(passwordTemp == 10) {
      passwordTemp = 0;
    }

    if(passwordTemp == -1) {
      passwordTemp = 9;
    }

      if(menuChange == 1) {
      switch(passwordID) {
        case 1:
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(passwordTemp);
        display.println(F(" _ _ _"));
        display.display();
        break;
        case 2:
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(F("* "));
        display.print(passwordTemp);
        display.println(F(" _ _"));
        display.display();
        break;
        case 3:
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(F("* * "));
        display.print(passwordTemp);
        display.println(F(" _"));
        display.display();

        break;
        case 4:
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(F("* * * "));
        display.println(passwordTemp);
        display.display();

        break;
      }
        switch(toneID) {
        case 1:
        tone1();
        break;
        case 2:
        tone2();
        break;
        case 3:
        tone3();
        break;
      }
      menuChange = 0;
      }
      if(passwordID == 5) {
        if(password1 == 1 && password2 == 1 && password3 == 1 && password4 == 1) {
          access = 1;
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("ARMED"));
        display.setTextSize(1);
        display.println(F("Access granted"));
        display.println(F(""));
        display.setTextSize(3);
        display.println(F("* * * *"));
        display.display();
        tone4();
        delay(1000);
        }
        else {
          access = 0;
          passwordID = 1;
          passwordTemp = 0;
          password1 = 0;
          password2 = 0;
          password3 = 0;
          password4 = 0;
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Access denied"));
        display.println(F(""));
        display.setTextSize(3);
        display.println(F("* * * *"));
        display.display();
        tone5();
        delay(1000);
        
        display.clearDisplay();
        display.setTextSize(2);             // Normal 1:1 pixel scale
        display.setTextColor(SSD1306_WHITE);        // Draw white text
        display.setCursor(0,0);             // Start at top-left corner
        display.println(F("DISARMED"));
        display.setTextSize(1);
        display.println(F("Enter passcode:"));
        display.println(F(""));
        display.setTextSize(3);
        display.print(passwordTemp);
        display.println(F(" _ _ _"));
        display.display();
        }
      }
    }
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F(" MAIN MENU"));
  display.setTextSize(1);
  display.println(F(""));
  display.println(F(">Handheld Mode"));
  display.println(F(""));
  display.println(F(" Auto Mode"));
  display.println(F(""));
  display.println(F(" Safety Info"));
              
  display.display();  
  }

void loop() {
  state = digitalRead(CLK);
  if(state != Laststate)
  {
    if(digitalRead(DT) != state)
    {
      counter++;
      }
      else
      {
        counter--;
        }
  
         //Serial.println(counter);
  }
  
  if(digitalRead(SW) != 1)
  {
    counter=0;
    //Serial.println(counter);
    
    }
    
    Laststate= state;

    if(counter == 4) {
      counter = 0;
      menuID++;
      menuChange = 1;
      toneID = 1;
    }

    if(counter == -4) {
      counter = 0;
      menuID--;
      menuChange = 1;
      toneID = 1;
    }

    if(digitalRead(SW) != 1) {
      menuChange = 1;
      toneID = 2;
      switch(menuID) {
        case 1:
        menuID = 11;
        break;
        case 2:
        menuID = 21;
        break;
        case 3:
        menuID = 31;
        break;
        case 11:
        toneID = 3;
        menuID = 101;
        break;
        case 12:
        menuID = 1;
        break;
        case 21:
        menuID = 201;
        break;
        case 22:
        menuID = 2;
        break;
        case 31:
        menuID = 3;
        break;
      }
      delay(250);
    }

    if(menuID == 0 || menuID == 4 || menuID == 10 || menuID == 13 || menuID == 20 || menuID == 23 || menuID == 30 || menuID == 32) {
      switch(menuID) {
        case 0:
        menuID = 3;
        break;
        case 4:
        menuID = 1;
        break;
        case 10:
        menuID = 12;
        break;
        case 13:
        menuID = 11;
        break;
        case 20:
        menuID = 22;
        break;
        case 23:
        menuID = 21;
        break;
        case 30:
        menuID = 31;
        break;
        case 32:
        menuID = 31;
        break;
      }
      menuChange = 1;
    }
    
    if(menuChange == 1) {
      switch(menuID) {
        case 1:
        menu1();
        menuChange = 0;
        break;
        case 2:
        menu2();
        menuChange = 0;
        break;
        case 3:
        menu3();
        menuChange = 0;
        break;
        case 11:
        menu11();
        menuChange = 0;
        break;
        case 101:
        digitalWrite(BULB, HIGH);
        Serial.println("BULB ON");
        tone3();
        while(leave == 0) {
          menu101();
          startMillis = millis();
          while(millis() <= startMillis + 500 && leave == 0) {
            if(digitalRead(SW) != 1) {
              leave = 1;
            }
          }
          menu102();
          startMillis = millis();
          while(millis() <= startMillis + 500 && leave == 0) {
            if(digitalRead(SW) != 1) {
              leave = 1;
            }
          }
          menu103();
          startMillis = millis();
          while(millis() <= startMillis + 500 && leave == 0) {
            if(digitalRead(SW) != 1) {
              leave = 1;
            }
          }
          menu104();
          startMillis = millis();
          while(millis() <= startMillis + 500 && leave == 0) {
            if(digitalRead(SW) != 1) {
              leave = 1;
            }
          }
        }
        digitalWrite(BULB, LOW);
        Serial.println("BULB OFF");
        leave = 0;
        menuID = 11;
        menuChange = 1;
        toneID = 5;
        break;
        case 12:
        menu12();
        menuChange = 0;
        break;
        case 21:
        menu21();
        menuChange = 0;
        break;
        case 201:
        minutes = 2;
        seconds10 = 0;
        seconds1 = 0;
        tone3();
        digitalWrite(BULB, HIGH);
        Serial.println("BULB ON");
        while(leave == 0) {
          display.clearDisplay();
          display.setTextSize(2);
          display.setTextColor(SSD1306_WHITE);
          display.setCursor(0,0);
          display.println(F("CAUTION:"));
          display.setTextSize(1);
          display.println(F("UVC irradiation in   progress"));
          display.setCursor(0,34);
          display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
          display.println(F("    TIME REMAINING:  "));
          display.setTextColor(SSD1306_WHITE);
          display.setCursor(14,43);
          display.setTextSize(3);
          display.print(F(" "));
          display.print(minutes);
          display.print(F(":"));
          display.print(seconds10);
          display.print(seconds1);

          display.display();

          if(minutes == 0 && seconds10 == 0 && seconds1 == 0) {
            toneID = 4;
            leave = 1;
          }
          
          if(seconds1 == 0) {
            seconds1 = 9;
            seconds10--;
          }
          else {
            seconds1--;
          }
          
          if(seconds10 == -1) {
            seconds10 = 5;
            minutes--;
          }
          
          
          startMillis = millis();
          while(millis() <= startMillis + 1000 && leave == 0) {
            if(digitalRead(SW) != 1) {
              leave = 1;
              toneID = 5;
            }
          }  
        }
        digitalWrite(BULB, LOW);
        Serial.println("BULB OFF");
        leave = 0;
        menuID = 21;
        menuChange = 1;
        break;
        case 22:
        menu22();
        menuChange = 0;
        break;
        case 31:
        menu31();
        menuChange = 0;
        break;
      }

      switch(toneID) {
        case 1:
        tone1();
        break;
        case 2:
        tone2();
        break;
        case 3:
        tone3();
        break;
        case 4:
        tone4();
        toneID = 15;
        break;
        case 5:
        tone5();
        delay(250);
        toneID = 15;
        break;
        case 15:
        noTone(BUZZ);
        break;
      }
    }

    
}

void menu1() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F(" MAIN MENU"));
  display.setTextSize(1);
  display.println(F(""));
  display.println(F(">Handheld Mode"));
  display.println(F(""));
  display.println(F(" Auto Mode"));
  display.println(F(""));
  display.println(F(" Safety Info"));
              
  display.display();  
}

void menu2() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F(" MAIN MENU"));
  display.setTextSize(1);
  display.println(F(""));
  display.println(F(" Handheld Mode"));
  display.println(F(""));
  display.println(F(">Auto Mode"));
  display.println(F(""));
  display.println(F(" Safety Info"));
              
  display.display();  
}

void menu3() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F(" MAIN MENU"));
  display.setTextSize(1);
  display.println(F(""));
  display.println(F(" Handheld Mode"));
  display.println(F(""));
  display.println(F(" Auto Mode"));
  display.println(F(""));
  display.println(F(">Safety Info"));
              
  display.display();  
}

void menu11() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("HANDHELD"));
  display.setTextSize(1);
  display.println(F("Press button to      turn the UVC lamp    ON/OFF"));
  display.println(F(""));
  display.setTextSize(2);
  //display.println(F(""));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
  display.print(F("START"));
  display.setTextColor(SSD1306_WHITE);
  display.println(F(" EXIT"));
  
  
  /*
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(F("OFF"));
  display.setTextColor(SSD1306_WHITE);
  display.println(F("ON"));  
   */           
  display.display();  
}

void menu12() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("HANDHELD"));
  display.setTextSize(1);
  display.println(F("Press button to      turn the UVC lamp    ON/OFF"));
  display.println(F(""));
  display.setTextSize(2);
  //display.println(F(""));
  display.print(F("START "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
  display.println(F("EXIT")); 
              
  display.display();
}

void menu21() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("AUTO"));
  display.setTextSize(1);
  display.println(F("Press button to beginautomatic sterilizat-ion process"));
  display.println(F(""));
  display.setTextSize(2);
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.print(F("START"));
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.print(F(" EXIT"));
             
  display.display();  
}

void menu22() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("AUTO"));
  display.setTextSize(1);
  display.println(F("Press button to beginautomatic sterilizat-ion process"));
  display.println(F(""));
  display.setTextSize(2);
  display.print(F("START "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.print(F("EXIT"));
             
  display.display();  
}

void menu31() {
  display.clearDisplay();
  display.setTextSize(2);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("SAFETY"));
  display.setTextSize(1);
  display.println(F("This device emits UVCradiation (wavelength100-280nm) UV skin   and eye protection   must always be worn  during operation."));
              
  display.display();  
}

void menu101() {
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0,0);
  display.println(F("CAUTION:"));
  display.setTextSize(1);
  display.println(F("UVC irradiation in   progress"));
  display.setTextSize(2);
  display.println(F(""));
  display.print(F("   "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(F("STOP"));

  display.display();
}

void menu102() {
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0,0);
  display.println(F("CAUTION:"));
  display.setTextSize(1);
  display.println(F("UVC irradiation in   progress."));
  display.setTextSize(2);
  display.println(F(""));
  display.print(F("   "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(F("STOP"));

  display.display();
}

void menu103() {
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0,0);
  display.println(F("CAUTION:"));
  display.setTextSize(1);
  display.println(F("UVC irradiation in   progress.."));
  display.setTextSize(2);
  display.println(F(""));
  display.print(F("   "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(F("STOP"));

  display.display();
}

void menu104() {
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0,0);
  display.println(F("CAUTION:"));
  display.setTextSize(1);
  display.println(F("UVC irradiation in   progress..."));
  display.setTextSize(2);
  display.println(F(""));
  display.print(F("   "));
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE); // Draw 'inverse' text
  display.println(F("STOP"));

  display.display();
}

void tone1() {
  tone(BUZZ, 512);
  delay(25);
  noTone(BUZZ);
}

void tone2() {
  tone(BUZZ, 880);
  delay(25);
  noTone(BUZZ);
}

void tone3() {
  for(int i = 0; i <= 10; i++) {
    //tone(BUZZ, 1760);
    tone(BUZZ, 2048);
    delay(10);
    tone(BUZZ, 1024);
    delay(10);
  }
  noTone(BUZZ);  
}

void tone4() {
  for(int i = 0; i <= 3; i++) {
    tone(BUZZ, 2048);
    delay(25);
    noTone(BUZZ);
    delay(25);
  }  
}

void tone5() {
  tone(BUZZ, 247);
  delay(50);
  noTone(BUZZ);
  delay(25);
  tone(BUZZ, 247);
  delay(100);
  noTone(BUZZ);
}
  

Credits

Henry Mayne

Henry Mayne

1 project • 6 followers

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