Arduino – Relay-LINK
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#define sw1 2 #define relay 9 unsigned long cnt=0; void setup() { pinMode(sw1, INPUT); pinMode(relay, OUTPUT); } void loop() { if (digitalRead(sw1) && cnt==0) { cnt=millis(); } else if (millis() > cnt+3000) { cnt=0; } if (cnt > 0) { digitalWrite(relay, HIGH); } else { digitalWrite(relay, LOW); } } |