button

//https://digistump.com/wiki/digispark/tutorials/connecting  #define buttonpin 1 #define masterpin 2 #define ledpin 0  void setup() {   pinMode(buttonpin, INPUT);   pinMode(masterpin, INPUT);   pinMode(ledpin, OUTPUT); }  void loop() {     static bool ledState = false; // LED is off by default     if ((digitalRead(buttonpin) == HIGH) && !ledState) { // 1 pressed & led is off         digitalWrite(ledpin, HIGH);         ledState = true;     }     if ((digitalRead(masterpin) == HIGH) && ledState) { // 2 pressed & led is on         digitalWrite(ledpin, LOW);         ledState = false;     } }