First init.

Zeitronix_Linear_Wideband_out/Zeitronix_Linear_Wideband_out.ino

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+// Define the analog input pin
+const int analogInputPin = A0;
+
+// Declare the global variable to store the AFR value
+float AFR;
+
+void setup() {
+  // Initialize the serial communication
+  Serial.begin(9600);
+}
+
+void loop() {
+  // Read the analog input value (0-1023)
+  int analogValue = analogRead(analogInputPin);
+  
+  // Convert the analog value to a voltage (0-5V)
+  float voltage = analogValue * (5.0 / 1023.0);
+  
+  // Calculate the AFR value
+  AFR = 2 * voltage + 9.6;
+  
+  // Output the AFR value to the serial monitor with one decimal place
+  Serial.print("AFR: ");
+  Serial.println(AFR, 1);
+  
+  // Add a small delay to avoid spamming the serial monitor
+  delay(500);
+}