diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25930bd..ec0a1f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,12 +6,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.6.0] - 2023-10-02
+- refactor constructor around I2C interface (simpler)
+- remove **configure()**
+- update readme.md
+- update examples
+
+----
+
 ## [0.5.3] - 2022-11-16
 - add RP2040 in build-CI
 - add changelog.md
 - minor edit readme.md
 
-
 ## [0.5.2] - 2022-01-05
 - minor edits after creating Max44007 library
 
diff --git a/Max44009.cpp b/Max44009.cpp
index 602990d..a34246f 100644
--- a/Max44009.cpp
+++ b/Max44009.cpp
@@ -1,12 +1,10 @@
 //
 //    FILE: Max44009.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.5.3
+// VERSION: 0.6.0
+//    DATE: 2010-??-??
 // PURPOSE: library for MAX44009 lux sensor Arduino
 //     URL: https://github.com/RobTillaart/MAX44009
-//
-// HISTORY: see changelog.md
-
 
 
 #include "Max44009.h"
@@ -16,47 +14,12 @@
 #define MAX44009_MAX_LUX                       (188006.0)
 
 
-#if defined(ESP8266) || defined(ESP32)
-Max44009::Max44009(const uint8_t address, const uint8_t dataPin, const uint8_t clockPin)
-{
-  _address = address;
-  _data    = 0;
-  _error   = MAX44009_OK;
-  _wire    = &Wire;
-
-  if ((dataPin < 255) && (clockPin < 255))
-  {
-    _wire->begin(dataPin, clockPin);
-  } else {
-    _wire->begin();
-  }
-}
-#endif
-
-
-Max44009::Max44009(const uint8_t address, const Boolean begin)
-{
-  Max44009::configure(address, &Wire, begin);
-}
-
-
-Max44009::Max44009(const Boolean begin)
-{
-  Max44009::configure(MAX44009_DEFAULT_ADDRESS, &Wire, begin);
-}
-
-
-void Max44009::configure(const uint8_t address, TwoWire *wire, const Boolean begin)
+Max44009::Max44009(const uint8_t address, TwoWire *wire)
 {
   _address = address;
   _data    = 0;
   _error   = MAX44009_OK;
   _wire    = wire;
-
-  if (begin == Boolean::True)
-  {
-    _wire->begin();
-  }
 }
 
 
diff --git a/Max44009.h b/Max44009.h
index 40b60bf..f7f1bc4 100644
--- a/Max44009.h
+++ b/Max44009.h
@@ -1,10 +1,11 @@
 #pragma once
 
 //    FILE: Max44009.h
-//  AUTHOR: Rob dot Tillaart at gmail dot com
-// VERSION: 0.5.3
+//  AUTHOR: Rob Tillaart
+// VERSION: 0.6.0
+//    DATE: 2010-??-??
 // PURPOSE: library for MAX44009 lux sensor Arduino
-// HISTORY: See changelog.md
+
 
 
 //      breakout MAX44009 / GY-49
@@ -32,7 +33,7 @@
 #include "Arduino.h"
 
 
-#define MAX44009_LIB_VERSION                  (F("0.5.3"))
+#define MAX44009_LIB_VERSION                  (F("0.6.0"))
 
 #define MAX44009_DEFAULT_ADDRESS              0x4A
 #define MAX44009_ALT_ADDRESS                  0x4B
@@ -67,20 +68,7 @@
 class Max44009
 {
 public:
-  //  enum class to prevent bool to be implicitly casted to int
-  enum class Boolean { True, False };
-
-#if defined(ESP8266) || defined(ESP32)
-  //  dataPin and clockPin can be used for ESP8266
-  Max44009(const uint8_t address, const uint8_t dataPin, const uint8_t clockPin);
-#endif
-
-  //  constructor for UNO
-  Max44009(const uint8_t address, const Boolean begin = Boolean::True);
-  //  default constructor with default address
-  Max44009(const Boolean begin = Boolean::True);
-  //  Change I2C interface and address
-  void configure(const uint8_t address, TwoWire *wire, const Boolean begin = Boolean::True);
+  Max44009(const uint8_t address = MAX44009_DEFAULT_ADDRESS, TwoWire *wire = &Wire);
 
   bool    isConnected();
   float   getLux();
@@ -105,7 +93,6 @@ class Max44009
   void    setAutomaticMode();
   void    setContinuousMode();    //  uses more power
   void    clrContinuousMode();    //  uses less power
-
   //      CDR = Current Divisor Ratio
   //      CDR = 1 ==> only 1/8th is measured
   //      TIM = Time Integration Measurement (table)
diff --git a/README.md b/README.md
index 8d9203d..8b2c3a3 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,12 @@
 
 [![Arduino CI](https://github.com/RobTillaart/MAX44009/workflows/Arduino%20CI/badge.svg)](https://github.com/marketplace/actions/arduino_ci)
-[![Arduino-lint](https://github.com/RobTillaart/Max44009/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/Max44009/actions/workflows/arduino-lint.yml)
-[![JSON check](https://github.com/RobTillaart/Max44009/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/Max44009/actions/workflows/jsoncheck.yml)
+[![Arduino-lint](https://github.com/RobTillaart/MAX44009/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/MAX44009/actions/workflows/arduino-lint.yml)
+[![JSON check](https://github.com/RobTillaart/MAX44009/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/MAX44009/actions/workflows/jsoncheck.yml)
+[![GitHub issues](https://img.shields.io/github/issues/RobTillaart/MAX44009.svg)](https://github.com/RobTillaart/MAX44009/issues)
+
 [![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/RobTillaart/MAX44009/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/RobTillaart/MAX44009.svg?maxAge=3600)](https://github.com/RobTillaart/MAX44009/releases)
+[![PlatformIO Registry](https://badges.registry.platformio.org/packages/robtillaart/library/MAX44009.svg)](https://registry.platformio.org/libraries/robtillaart/MAX44009)
 
 
 # MAX44009 I2C LUX sensor
@@ -15,10 +18,20 @@ Library for MAX44009 / GY-49 I2C lux sensor.
 
 a.k.a. GY-49
 
-The MAX44009 ambient light sensor is an I2C sensor, that has a 22 bit 
+The MAX44009 ambient light sensor is an I2C sensor, that has a 22 bit
 dynamic range from 0.045 lux to 188,000 lux.
 
-Relates to https://github.com/RobTillaart/Max44007 
+
+#### MAX44007
+
+The MAX44007 is an almost identical sensor that uses a step size of 0.025.
+This implies that this library is not useable 1 to 1 for the MAX44007, however some parts will work/
+
+
+#### Related
+
+- https://github.com/RobTillaart/Max44007  (range 0.025 lux to 104,448 lux)
+- https://github.com/RobTillaart/Max44009  (range 0.045 lux to 188,000 lux)
 
 
 ## Schema breakout max44009 / GY-49
@@ -49,21 +62,22 @@ Relates to https://github.com/RobTillaart/Max44007
 
 ## Interface
 
-- **enum class Boolean { True, False }** enum class to prevent bool to be implicitly casted to int.
+```cpp
+#include "Max44009.h"
+```
 
+### Constructor
 
-### Constructor 
-  
-- **Max44009(uint8_t address, uint8_t dataPin, uint8_t clockPin)** Constructor with dataPin (sda) and clockPin (scl) for ESP32 and ESP8266.
-- **Max44009(uint8_t address, begin = Boolean::True)** Constructor for other boards e.g. UNO.
-- **Max44009(begin = Boolean::True)** Constructor with default I2C address 0x4A == 74.
-- **void configure(uint8_t address, TwoWire \*wire, begin = Boolean::True)** Change I2C interface and address.
+- **Max44009(const uint8_t address = MAX44009_DEFAULT_ADDRESS, TwoWire \*wire = &Wire)** Constructor.
+Optional address and optional I2C interface.\
 - **bool isConnected()** returns true if the device address configured is available on I2C bus.
 
+NOTE: The user must call **Wire.begin()** or **Wire.begin(SDA, SCL)** in **setup()**.
 
-### Basic 
 
-- **float getLux()** read the sensor and return the value in LUX. If the value is negative, an error has occurred. 
+### Basic
+
+- **float getLux()** read the sensor and return the value in LUX. If the value is negative, an error has occurred.
 - **int getError()** returns last error.
 
 ```cpp
@@ -80,15 +94,15 @@ Relates to https://github.com/RobTillaart/Max44007
 
 check datasheet for details
 
-- **bool setHighThreshold(float value)** sets the upper threshold for the interrupt 
-generation (INT pulls LOW). Works only if INTE bit is set by **enableInterrupt()**. 
+- **bool setHighThreshold(float value)** sets the upper threshold for the interrupt
+generation (INT pulls LOW). Works only if INTE bit is set by **enableInterrupt()**.
 Function returns false if the value is out of range.
 - **float getHighThreshold()** returns the value set.
-- **bool setLowThreshold(float value)** sets the lower threshold for the interrupt 
-generation (INT pulls LOW). Works only if INTE bit is set by **enableInterrupt()**. 
+- **bool setLowThreshold(float value)** sets the lower threshold for the interrupt
+generation (INT pulls LOW). Works only if INTE bit is set by **enableInterrupt()**.
 Function returns false if the value is out of range.
 - **float getLowThreshold()** returns the value set.
-- **void setThresholdTimer(uint8_t value)** Time the threshold needs to be exceeded, 
+- **void setThresholdTimer(uint8_t value)** Time the threshold needs to be exceeded,
 defined in steps of 100ms. 2 seems to be a practical minimum.
 - **uint8_t getThresholdTimer()** returns the value set.
 
@@ -107,7 +121,7 @@ check datasheet for details
 
 check datasheet for details
 
-- **void setConfiguration(uint8_t)** writes directly to configuration register. 
+- **void setConfiguration(uint8_t)** writes directly to configuration register.
 **warning** Use with care.
 - **uint8_t getConfiguration()** reads the current configuration register.
 
@@ -120,12 +134,12 @@ CCR = Current Divisor Ratio.
 
 TIM = Integration time.
 
-- **void setAutomaticMode()** in automatic mode the MAX44009 determines the CDR and TIM 
+- **void setAutomaticMode()** in automatic mode the MAX44009 determines the CDR and TIM
 parameters.
-- **void setContinuousMode()** continuous mode uses more power than a "single" conversion. 
+- **void setContinuousMode()** continuous mode uses more power than a "single" conversion.
 Advantage is that the latest data is always available fast.
-- **void clrContinuousMode()** uses less power so better for LOW power configurations. 
-- **void setManualMode(uint8_t CDR, uint8_t TIM)** Set the Current Divisor Ratio and the 
+- **void clrContinuousMode()** uses less power so better for LOW power configurations.
+- **void setManualMode(uint8_t CDR, uint8_t TIM)** Set the Current Divisor Ratio and the
 integration time manually. Effectively disable automatic mode.
 - **int getIntegrationTime()** returns the set integration time in milliseconds
 
@@ -147,11 +161,11 @@ integration time manually. Effectively disable automatic mode.
 
 ### Test functions
 
-Function for the conversion math, not meant to be used directly, 
+Function for the conversion math, not meant to be used directly,
 but by making them public they become testable.
 
-- **float convertToLux(uint8_t datahigh, uint8_t datalow)** convert intern register 
-format to a LUX value. 
+- **float convertToLux(uint8_t dataHigh, uint8_t dataLow)** convert intern register
+format to a LUX value.
 
 
 ## Examples
@@ -167,22 +181,36 @@ format to a LUX value.
 ## Notes
 
 Please be aware this is a **3.3 Volt device** so it should not be connected
-to an Arduino UNO or other 5 Volt device directly. 
+to an Arduino UNO or other 5 Volt device directly.
 Use a level convertor to solve this.
 
 Do not forget to connect the address pin as you cannot read the sensor
 in a reliable way. As the line will float it will sometimes have the
 right address and sometimes not. (been there ;)
 
+Pull ups on I2C bus are recommended.
+
 
 ## Future
 
+#### Must
+
 - improve documentation
-- merge MAX44007 library in the future. (shared base class?)
 
+#### Should
 
-#### MAX44007
+#### Could
 
-The MAX44007 is an almost identical sensor that uses a step size of 0.025.
-This implies that this library is not useable 1 to 1 for the MAX44007, however some parts will work/
+- merge MAX44007 / MAX44009 library in the future. (shared base class?)
+
+#### Wont
+
+
+## Support
+
+If you appreciate my libraries, you can support the development and maintenance.
+Improve the quality of the libraries by providing issues and Pull Requests, or
+donate through PayPal or GitHub sponsors.
+
+Thank you,
 
diff --git a/examples/max44009_interrupt/max44009_interrupt.ino b/examples/max44009_interrupt/max44009_interrupt.ino
index c229244..cb6242e 100644
--- a/examples/max44009_interrupt/max44009_interrupt.ino
+++ b/examples/max44009_interrupt/max44009_interrupt.ino
@@ -16,7 +16,8 @@ uint32_t lastDisplay = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("\nStart max44009_interrupt : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/examples/max44009_setAutomaticMode/max44009_setAutomaticMode.ino b/examples/max44009_setAutomaticMode/max44009_setAutomaticMode.ino
index c8d2af0..ec7b147 100644
--- a/examples/max44009_setAutomaticMode/max44009_setAutomaticMode.ino
+++ b/examples/max44009_setAutomaticMode/max44009_setAutomaticMode.ino
@@ -16,7 +16,8 @@ uint32_t lastDisplay = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("\nStart max44009_setAutomaticMode : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/examples/max44009_setContinuousMode/max44009_setContinuousMode.ino b/examples/max44009_setContinuousMode/max44009_setContinuousMode.ino
index 6da80da..f418524 100644
--- a/examples/max44009_setContinuousMode/max44009_setContinuousMode.ino
+++ b/examples/max44009_setContinuousMode/max44009_setContinuousMode.ino
@@ -25,7 +25,8 @@ int count = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("\nStart max44009_setContinuousMode : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/examples/max44009_setManualMode/max44009_setManualMode.ino b/examples/max44009_setManualMode/max44009_setManualMode.ino
index 49e3f88..039006a 100644
--- a/examples/max44009_setManualMode/max44009_setManualMode.ino
+++ b/examples/max44009_setManualMode/max44009_setManualMode.ino
@@ -19,7 +19,8 @@ uint8_t TIM = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("\nStart max44009_setManualMode : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/examples/max44009_test01/max44009_test01.ino b/examples/max44009_test01/max44009_test01.ino
index 9411456..97cf7b5 100644
--- a/examples/max44009_test01/max44009_test01.ino
+++ b/examples/max44009_test01/max44009_test01.ino
@@ -29,7 +29,8 @@ uint32_t lastDisplay = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("Start max44009_test01 : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/examples/max44009_test02/max44009_test02.ino b/examples/max44009_test02/max44009_test02.ino
index 0f2e1d2..f095ee1 100644
--- a/examples/max44009_test02/max44009_test02.ino
+++ b/examples/max44009_test02/max44009_test02.ino
@@ -16,10 +16,10 @@
 #include "Max44009.h"
 
 // Don't begin I2C interface (Wire). Will be called in setup()
-Max44009 myLuxA(Max44009::Boolean::False);
-Max44009 myLuxB(Max44009::Boolean::False);
-Max44009 myLuxC(Max44009::Boolean::False);
-Max44009 myLuxD(Max44009::Boolean::False);
+Max44009 myLuxA(MAX44009_DEFAULT_ADDRESS, &Wire);
+Max44009 myLuxB(MAX44009_ALT_ADDRESS, &Wire);
+Max44009 myLuxC(MAX44009_DEFAULT_ADDRESS, &Wire1);
+Max44009 myLuxD(MAX44009_ALT_ADDRESS, &Wire1);
 
 uint32_t lastDisplay = 0;
 
@@ -27,15 +27,12 @@ uint32_t lastDisplay = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("Start max44009_test02 : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin(19, 18);
   Wire1.begin(22, 23);
-  myLuxA.configure(MAX44009_DEFAULT_ADDRESS, &Wire);
-  myLuxB.configure(MAX44009_ALT_ADDRESS, &Wire);
-  myLuxC.configure(MAX44009_DEFAULT_ADDRESS, &Wire1);
-  myLuxD.configure(MAX44009_ALT_ADDRESS, &Wire1);
 }
 
 
diff --git a/examples/max44009_two_sensors/max44009_two_sensors.ino b/examples/max44009_two_sensors/max44009_two_sensors.ino
index 9e45947..b99edb4 100644
--- a/examples/max44009_two_sensors/max44009_two_sensors.ino
+++ b/examples/max44009_two_sensors/max44009_two_sensors.ino
@@ -18,7 +18,8 @@ uint32_t count = 0;
 void setup()
 {
   Serial.begin(115200);
-  Serial.print("Start max44009_two_sensors : ");
+  Serial.println(__FILE__);
+  Serial.print("MAX44009_LIB_VERSION: ");
   Serial.println(MAX44009_LIB_VERSION);
 
   Wire.begin();
diff --git a/keywords.txt b/keywords.txt
index e0f6494..cb5ea81 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -5,7 +5,6 @@ Max44009	KEYWORD1
 
 
 # Methods and Functions (KEYWORD2)
-configure	KEYWORD2
 isConnected	KEYWORD2
 getLux	KEYWORD2
 getError	KEYWORD2
diff --git a/library.json b/library.json
index b6c7fd4..81aee77 100644
--- a/library.json
+++ b/library.json
@@ -15,9 +15,9 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/Max44009.git"
   },
-  "version": "0.5.3",
+  "version": "0.6.0",
   "license": "MIT",
-  "frameworks": "arduino",
+  "frameworks": "*",
   "platforms": "*",
   "headers": "Max44009.h"
 }
diff --git a/library.properties b/library.properties
index 099ec31..feaaf24 100644
--- a/library.properties
+++ b/library.properties
@@ -1,9 +1,9 @@
 name=Max44009
-version=0.5.3
+version=0.6.0
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
-sentence=Library for MAX44009 I2C LUX sensor Arduino. 
-paragraph= 
+sentence=Library for MAX44009 I2C LUX sensor Arduino.
+paragraph=
 category=Sensors
 url=https://github.com/RobTillaart/Max44009
 architectures=*
diff --git a/test/unit_test_001.cpp b/test/unit_test_001.cpp
index 2f0a9fe..5590364 100644
--- a/test/unit_test_001.cpp
+++ b/test/unit_test_001.cpp
@@ -104,4 +104,5 @@ unittest(test_convertToLux)
 
 unittest_main()
 
-// --------
+
+//  -- END OF FILE --