Full Video How to Make a Spot Welding

How to make a spot welding from microwave transformer

Step 1: Make a Spot Welding With Arduino Timer

I want to show you my experience to make a spot welding from Microware Transformer.

Step 2: I Use a Microwave Transformer. 800W

Step 3: Use a Cutting Machine to Cut the Secondary Coils

Step 4: Remove All of the Wires to the Secondary Wires

Step 5: Use Can See Like This

Step 6: Use the Wire. Diameter Is 1cm

Step 7: Here Is the Diagram. How to Make Timer Use Arduino, Relay 5V, Rheostat, Travel Switch

//Code upload to Arduino
int button = 8;
int out = 2;
void setup(){
  Serial.begin(9600);
  pinMode(out, OUTPUT);
  pinMode(button, INPUT);
  
}

void loop(){
  int value = analogRead(A0);
  Serial.println(value);
  

  int voltage;
  voltage = map(value,0,1023,0,2000);
  Serial.println(voltage);
  int buttonStatus = digitalRead(button);
  Serial.println(buttonStatus);
  Serial.println();
  delay(100);
  if ( buttonStatus == 1 ) {
    if ( voltage > 0 && voltage <= 100 ) {
      delay_0_0_5();
    } else if ( voltage > 100 && voltage <= 200 ) {
      delay_0_1();
    } else if ( voltage > 200 && voltage <= 300 ) {
      delay_0_1_5();
    } else if ( voltage > 300 && voltage <= 400 ) {
      delay_0_2();
    } else if ( voltage > 400 && voltage <= 500 ) {
    delay_0_2_5();
    } else if ( voltage > 500 && voltage <= 600 ) {
      delay_0_3();
    } else if ( voltage > 600 && voltage <= 700 ) {
      delay_0_3_5();
    } else if ( voltage > 700 && voltage <= 800 ) {
      delay_0_4();
    } else if ( voltage > 800 && voltage <= 900 ) {
      delay_0_4_5();
    } else if ( voltage > 900 && voltage <= 1000 ) {
      delay_0_5();
    } else if ( voltage > 1000 && voltage <= 1100 ) {
      delay_0_5_5();
    } else if ( voltage > 1100 && voltage <= 1200 ) {
      delay_0_6();
    } else if ( voltage > 1200 && voltage <= 1300 ) {
      delay_0_6_5();
    } else if ( voltage > 1300 && voltage <= 1400 ) {
      delay_0_7();
    } else if ( voltage > 1400 && voltage <= 1500 ) {
      delay_0_7_5();
    } else if ( voltage > 1500 && voltage <= 1600 ) {
      delay_0_8();
    } else if ( voltage > 1600 && voltage <= 1700 ) {
      delay_0_8_5();
    } else if ( voltage > 1700 && voltage <= 1800 ) {
      delay_0_9();
    } else if ( voltage > 1800 && voltage <= 1900 ) {
      delay_0_9_5();
    } else  if ( voltage > 1900 && voltage <= 2000 ) {
      delay_1();
    }
  } 
  
  
} 

void delay_0_0_5() {
  digitalWrite(out, HIGH);
  delay(50);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_1() {
  digitalWrite(out, HIGH);
  delay(100);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_1_5() {
  digitalWrite(out, HIGH);
  delay(150);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_2() {
  digitalWrite(out, HIGH);
  delay(200);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_2_5() {
  digitalWrite(out, HIGH);
  delay(250);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_3() {
  digitalWrite(out, HIGH);
  delay(300);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_3_5() {
  digitalWrite(out, HIGH);
  delay(350);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_4() {
  digitalWrite(out, HIGH);
  delay(700400);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_4_5() {
  digitalWrite(out, HIGH);
  delay(450);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_5() {
  digitalWrite(out, HIGH);
  delay(500);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_5_5() {
  digitalWrite(out, HIGH);
  delay(550);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_6() {
  digitalWrite(out, HIGH);
  delay(600);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_6_5() {
  digitalWrite(out, HIGH);
  delay(650);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_7() {
  digitalWrite(out, HIGH);
  delay(700);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_7_5() {
  digitalWrite(out, HIGH);
  delay(750);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_8() {
  digitalWrite(out, HIGH);
  delay(800);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_8_5() {
  digitalWrite(out, HIGH);
  delay(850);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_9() {
  digitalWrite(out, HIGH);
  delay(900);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_0_9_5() {
  digitalWrite(out, HIGH);
  delay(950);
  digitalWrite(out,LOW);
  delay(2000);
}

void delay_1() {
  digitalWrite(out, HIGH);
  delay(1000);
  digitalWrite(out,LOW);
  delay(2000);
}

Step 8: Put All of Things to the Case

Step 9: Solder the Wires to the Transformer

Step 10:

Step 11:

Step 12:

Step 13:

Step 14: Time to Test