diff --git a/examples/ArduinoSAMDSercom3keyPressedPin1/ArduinoSAMDSercom3keyPressedPin1.ino b/examples/ArduinoSAMDSercom3keyPressedPin1/ArduinoSAMDSercom3keyPressedPin1.ino
new file mode 100644
index 0000000..c969a48
--- /dev/null
+++ b/examples/ArduinoSAMDSercom3keyPressedPin1/ArduinoSAMDSercom3keyPressedPin1.ino
@@ -0,0 +1,37 @@
+/*
+ KeyPressed on PIN1
+ by Mischianti Renzo <http://www.mischianti.org>
+
+ https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
+*/
+
+#include "Arduino.h"
+#include "PCF8574.h"
+
+TwoWire aWire(&sercom3, 20, 21);
+// Set i2c address
+PCF8574 pcf8574(&aWire, 0x38);
+
+unsigned long timeElapsed;
+void setup()
+{
+	Serial.begin(115200);
+	delay(1000);
+
+	pcf8574.pinMode(P0, OUTPUT);
+	pcf8574.pinMode(P1, INPUT);
+
+	Serial.print("Init pcf8574...");
+	if (pcf8574.begin()){
+		Serial.println("OK");
+	}else{
+		Serial.println("KO");
+	}
+}
+
+void loop()
+{
+	uint8_t val = pcf8574.digitalRead(P1);
+	if (val==HIGH) Serial.println("KEY PRESSED");
+	delay(50);
+}