Arduino toggle push power on off latch switch

A push power ON-OFF switch is a push-to-make, push-to-break switch which alternates its output between the two output states for repeated push action. That is each time the button is pressed the output turns ON if it is presently OFF and OFF if it is ON.

In the here circuit the Arduino changes its output for each positive edge triggering at the input pin; the transition of the state from LOW to HIGH is called a Positive edge. A positive transition occurs only at the instant when the switch in a released state is been pressed. So holding the switch makes no difference in the output, to change the output the switch has to release and press again.

For every trigger pulse or positive edge the arduino will toggle the state and hold it till the next pulse is received.

const int Switch = 2, LED = 3;
int state = 0, LEDstate=0;

void setup()
{
  pinMode(Switch, INPUT);
  pinMode(LED, OUTPUT);
  Serial.begin(9600);
}
void loop()
{
  if (state == 0 && digitalRead(Switch) == HIGH) {
    state = 1;
    LEDstate=!LEDstate;
  }
  if (state == 1 && digitalRead(Switch) == LOW) {   
    state = 0;
  }
   digitalWrite(LED, LEDstate);
}

To run additional codes or to operate devices or modules with the latching switch use the below code. Place the required code in the code block space shown in the code. The ”Else” state is true by default, thus the code placed inside it runs first. The ”if” condition becomes true only on the first pulse. Then the execution of code blocks toggles for the next successive actions.

code 2