Battery Tab spot welder made with a arduino solidstate relay and a micro wave oven some are useing 0 point detection an a scr but it workes nice with this settup.
Her is the simple program for the Arduino:
/*
Arduino spot welder Control rha 2017
________________/---delay1---\_____delay2____/---------------delay3-------------\__________
*/
void setup() {
pinMode(2, INPUT_PULLUP);// Footpedal (triger)
pinMode(8, OUTPUT);// Solid state relay
}
void loop() {
int Wtrigger = digitalRead(2);
int delay1 = analogRead(0);//pot 10k for preeheat
int delay2 = analogRead(1);//pot 10k for dwell
int delay3 = analogRead(2);//pot 10k for main weld
digitalWrite(8, LOW);
if (Wtrigger == HIGH) {digitalWrite(8, LOW);}
else {
digitalWrite(8, HIGH);
delay(delay1);
digitalWrite(8, LOW);
delay(delay2);
digitalWrite(8, HIGH);
delay(delay3); //
digitalWrite(8, LOW);
delay(1000); //dewell betwenn Cycles
}
}
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