First init.

ANANO_MAZDAPWM_mk1/ANANO_MAZDAPWM_mk1.ino

@@ -0,0 +1,100 @@
+#include <OneWire.h>
+#include <DallasTemperature.h>
+
+#define ONE_WIRE_BUS_1 2 // DS18B20 temperature sensor CLT1
+#define ONE_WIRE_BUS_2 3 // DS18B20 temperature sensor CLT2
+#define FAN_PIN 11       // PWM output pin for FAN1
+#define ANALOG_INPUT_PIN A0
+#define ORS_PIN 19       // Input pin for fan control
+
+#define FAN_ON 95        // Temperature threshold to turn on fan
+#define FAN_OFF (FAN_ON - 10) // Temperature threshold to turn off fan
+#define FAN_HIGH (FAN_ON + 10) // High temperature threshold for increased fan speed
+#define FAN_HIGH_DUTY_CYCLE 95 // Duty cycle for increased fan speed
+#define FAN_LOW_DUTY_CYCLE 40  // Duty cycle for normal fan speed
+
+OneWire oneWire1(ONE_WIRE_BUS_1);
+OneWire oneWire2(ONE_WIRE_BUS_2);
+DallasTemperature sensor1(&oneWire1);
+DallasTemperature sensor2(&oneWire2);
+
+bool fanOverride = false;
+int fanOverrideDutyCycle = 0;
+
+void setup() {
+  pinMode(ORS_PIN, INPUT_PULLUP);
+  pinMode(FAN_PIN, OUTPUT);
+  Serial.begin(9600);
+  sensor1.begin();
+  sensor2.begin();
+}
+
+void loop() {
+  float temp1, temp2;
+  bool validReading1 = false, validReading2 = false;
+
+  // Read temperatures from sensors
+  sensor1.requestTemperatures();
+  sensor2.requestTemperatures();
+  temp1 = sensor1.getTempCByIndex(0);
+  temp2 = sensor2.getTempCByIndex(0);
+
+  // Check if readings are valid
+  if (temp1 >= -20 && temp1 <= 130) {
+    validReading1 = true;
+  }
+  if (temp2 >= -20 && temp2 <= 130) {
+    validReading2 = true;
+  }
+
+  // Calculate average temperature
+  float avgTemp = -1;
+  if (validReading1 && validReading2) {
+    avgTemp = (temp1 + temp2) / 2;
+  } else if (validReading1) {
+    avgTemp = temp1;
+  } else if (validReading2) {
+    avgTemp = temp2;
+  }
+
+  // Check if fan should be controlled by temperature
+  if (!fanOverride) {
+    if (avgTemp >= FAN_ON) {
+      analogWrite(FAN_PIN, FAN_LOW_DUTY_CYCLE);
+    } else if (avgTemp <= FAN_OFF) {
+      digitalWrite(FAN_PIN, LOW); // Fan should be off if temperature is below FAN_OFF threshold
+    } else if (avgTemp >= FAN_HIGH) {
+      analogWrite(FAN_PIN, FAN_HIGH_DUTY_CYCLE);
+    } else {
+      analogWrite(FAN_PIN, FAN_LOW_DUTY_CYCLE);
+    }
+  } else {
+    analogWrite(FAN_PIN, fanOverrideDutyCycle);
+  }
+
+  // Check if fan control pin is pulled low
+  if (digitalRead(ORS_PIN) == LOW) {
+    int potValue = analogRead(ANALOG_INPUT_PIN);
+    fanOverrideDutyCycle = map(potValue, 0, 1023, 0, 255);
+    fanOverride = true;
+  } else {
+    fanOverride = false;
+  }
+
+  // Output to serial monitor
+  Serial.print("Average Temperature: ");
+  if (avgTemp != -1) {
+    Serial.print(avgTemp);
+    Serial.println(" C");
+  } else {
+    Serial.println("Invalid reading");
+  }
+  Serial.print("Fan Duty Cycle: ");
+  if (fanOverride) {
+    Serial.print(map(fanOverrideDutyCycle, 0, 255, 0, 100));
+  } else {
+    Serial.print(map(analogRead(FAN_PIN), 0, 1023, 0, 100));
+  }
+  Serial.println("%");
+  delay(1000);
+}