diff --git a/libraries/HX711/examples/HX_performance2/HX_performance2.ino b/libraries/HX711/examples/HX_performance2/HX_performance2.ino
new file mode 100644
index 0000000..e4931d5
--- /dev/null
+++ b/libraries/HX711/examples/HX_performance2/HX_performance2.ino
@@ -0,0 +1,71 @@
+//
+//    FILE: HX_performance2.ino
+//  AUTHOR: Rob Tillaart
+// PURPOSE: HX711 performance measurements
+//     URL: https://github.com/RobTillaart/HX711
+
+
+#include "HX711.h"
+
+HX711 scale;
+
+//  adjust pins if needed
+uint8_t dataPin = 6;
+uint8_t clockPin = 7;
+
+uint32_t start, stop;
+volatile float f;
+
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println();
+  Serial.println(__FILE__);
+  Serial.print("HX711_LIB_VERSION: ");
+  Serial.println(HX711_LIB_VERSION);
+  Serial.println();
+
+  scale.begin(dataPin, clockPin);
+
+  //  TODO find a nice solution for this calibration..
+  //  load cell factor 20 KG
+  //  scale.set_scale(127.15);
+
+  //  load cell factor 5 KG
+  scale.set_scale(420.0983);       //  TODO you need to calibrate this yourself.
+  //  reset the scale to zero = 0
+  scale.tare();
+
+  measure();
+}
+
+
+void loop()
+{
+}
+
+
+void measure()
+{
+  Serial.println("Counting get_units() calls for 1 minute...");
+  delay(20);
+  uint32_t count = 0;
+  uint32_t start = millis();
+  while (millis() - start < 60000)
+  {
+    if (scale.is_ready())
+    {
+      count++;
+      scale.get_units(1);
+    }
+  }
+  Serial.print("calls per minute: ");
+  Serial.println(count);
+  Serial.print("calls per second: ");
+  Serial.println(count / 60.0);
+}
+
+
+//  -- END OF FILE --
+
diff --git a/libraries/HX711/examples/HX_performance2/performance_0.2.3.txt b/libraries/HX711/examples/HX_performance2/performance_0.2.3.txt
new file mode 100644
index 0000000..a954332
--- /dev/null
+++ b/libraries/HX711/examples/HX_performance2/performance_0.2.3.txt
@@ -0,0 +1,8 @@
+
+(dry run with no HW)
+
+LIBRARY VERSION: 0.2.3
+
+Counting get_units() calls for 1 minute...
+calls per minute: 149202
+calls per second: 2486.70
diff --git a/libraries/HX711/examples/HX_performance2/performance_0.3.0.txt b/libraries/HX711/examples/HX_performance2/performance_0.3.0.txt
new file mode 100644
index 0000000..9a86a24
--- /dev/null
+++ b/libraries/HX711/examples/HX_performance2/performance_0.3.0.txt
@@ -0,0 +1,8 @@
+
+(dry run with no HW)
+
+LIBRARY VERSION: 0.3.0
+
+Counting get_units() calls for 1 minute...
+calls per minute: 149202
+calls per second: 2486.70
diff --git a/libraries/HX711/examples/HX_performance2/performance_0.3.6.txt b/libraries/HX711/examples/HX_performance2/performance_0.3.6.txt
new file mode 100644
index 0000000..b09be40
--- /dev/null
+++ b/libraries/HX711/examples/HX_performance2/performance_0.3.6.txt
@@ -0,0 +1,18 @@
+
+Run with no HW
+----------------------
+LIBRARY VERSION: 0.3.6
+
+Counting get_units() calls for 1 minute...
+calls per minute: 157918
+calls per second: 2631.97
+
+
+
+Run with HW
+----------------------
+LIBRARY VERSION: 0.3.6
+
+Counting get_units() calls for 1 minute...
+calls per minute: 636
+calls per second: 10.60