- #define ir_pin A2
- #define pump 3
- #define alarm 4
- void setup() {
- pinMode(pump, OUTPUT);
- pinMode(alarm, OUTPUT);
- }
- void loop() {
- int ir = analogRead(ir_pin);
- if (ir > 400) {
- digitalWrite(pump, HIGH);
- digitalWrite(alarm, HIGH);
- }
- else {
- digitalWrite(pump, LOW);
- digitalWrite(alarm, LOW);
- }
- }
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