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@@ -66,4 +66,6 @@ The final version of the magnetometer uses a **moving average filter** to smooth
 
 ## Barcode (Line) Sensor
 
+The barcode sensor uses edge interrupts to trigger the barcode sensor when the sensor hits a black line, which then measures the width of the black line to white, and stores it in an array. The Code39 barcode library is used as a reference for the barcode decoding function.
+
 ## WiFi (Web Server) Module