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int leds=6; int sws=4; boolean states=true; int cnt=0; void setup() { pinMode(leds, OUTPUT); pinMode(sws, INPUT); } void loop() { if (cnt==0 && digitalRead(sws)) { states=!states; cnt++; } else if (cnt < 20000) { cnt++; } else if (cnt >= 20000) { cnt=0; } if (states) { digitalWrite(leds, HIGH); } else { digitalWrite(leds, LOW); } } |