diff --git a/libraries/PrintCharArray/.arduino-ci.yml b/libraries/PrintCharArray/.arduino-ci.yml
index 919a5224..4856ce39 100644
--- a/libraries/PrintCharArray/.arduino-ci.yml
+++ b/libraries/PrintCharArray/.arduino-ci.yml
@@ -1,14 +1,32 @@
+platforms:
+  rpipico:
+    board: rp2040:rp2040:rpipico
+    package: rp2040:rp2040
+    gcc:
+      features:
+      defines:
+        - ARDUINO_ARCH_RP2040
+      warnings:
+      flags:
+
+packages:
+  rp2040:rp2040:
+    url: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
+
 compile:
   # Choosing to run compilation tests on 2 different Arduino platforms
+  #  selected only those that work
   platforms:
     - uno
-    - due
-    - zero
-    - leonardo
+    # - due
+    # - zero
+    # - leonardo
     - m4
     - esp32
-    # - esp8266
+    - esp8266
     # - mega2560
+    - rpipico
+
   # Declaring Dependent Arduino Libraries (to be installed via the Arduino Library Manager)
   libraries:
     - "XMLWriter"
\ No newline at end of file
diff --git a/libraries/PrintCharArray/CHANGELOG.md b/libraries/PrintCharArray/CHANGELOG.md
new file mode 100644
index 00000000..0884af81
--- /dev/null
+++ b/libraries/PrintCharArray/CHANGELOG.md
@@ -0,0 +1,38 @@
+# Change Log PrintCharArray
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+
+## [0.3.3] - 2022-11-22
+- add changelog.md
+- add RP2040 to build-CI
+- minor edit readme.md
+
+
+## [0.3.2] - 2021-12-24
+- update library.json, license, minor edits
+
+
+## [0.3.1] - 2021-11-13  update Arduino-CI, readme.md
+- add conditional PRINTCHARARRAY_MAX_BUFFER_SIZE
+- add write(char \* str, uint8_t length) Print interface.
+
+## [0.3.0] - 2021-01-06
+- Arduino-CI + unit test, free -> available()
+
+----
+
+## [0.2.1] - 2020-06-19  fix library.json
+## [0.2.0] - 2020-04-30  dynamic memory
+
+----
+
+## [0.1.1] - 2020-04-28
+- minor optimization
+
+## [0.1.0] - 2017-12-07
+- initial version
+
diff --git a/libraries/PrintCharArray/PrintCharArray.h b/libraries/PrintCharArray/PrintCharArray.h
index ab47faa7..c58e9e44 100644
--- a/libraries/PrintCharArray/PrintCharArray.h
+++ b/libraries/PrintCharArray/PrintCharArray.h
@@ -2,27 +2,17 @@
 //
 //    FILE: PrintCharArray.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.3.2
+// VERSION: 0.3.3
 // PURPOSE: Class that captures prints into a char array
 //    DATE: 2017-12-07
 //     URL: https://github.com/RobTillaart/PrintCharArray
-//
-//  HISTORY
-//  0.1.0   2017-12-07  initial version
-//  0.1.1   2020-04-28  minor optimization
-//  0.2.0   2020-04-30  dynamic memory
-//  0.2.1   2020-06-19  fix library.json
-//  0.3.0   2021-01-06  Arduino-CI + unit test, free -> available()
-//  0.3.1   2021-11-13  update Arduino-CI, readme.md
-//                      add conditional PRINTCHARARRAY_MAX_BUFFER_SIZE
-//                      add write(char * str, uint8_t length) Print interface.
-//  0.3.2   2021-12-24  update library.json, license, minor edits
 
 
+#include "Arduino.h"
 #include "Print.h"
 
 
-#define PRINTCHARARRAY_VERSION            (F("0.3.2"))
+#define PRINTCHARARRAY_VERSION            (F("0.3.3"))
 
 #ifndef PRINTCHARARRAY_MAX_BUFFER_SIZE
 #define PRINTCHARARRAY_MAX_BUFFER_SIZE    250
@@ -58,7 +48,7 @@ public:
 
   size_t write(uint8_t * str, uint8_t length)
   {
-    if ( (int(_index) + length) >= _bufSize) return 0;  // does not fit.
+    if ( (int(_index) + length) >= _bufSize) return 0;  //  does not fit.
 
     uint8_t len = length;
     uint8_t i = 0;
@@ -82,7 +72,7 @@ public:
   }
 
 
-  // int length() { return _index; };   // better as size()?
+  // int length() { return _index; };   //  better as size()?
   int size()
   { 
     return _index;
@@ -109,5 +99,5 @@ private:
 };
 
 
-// -- END OF FILE --
+//  -- END OF FILE --
 
diff --git a/libraries/PrintCharArray/library.json b/libraries/PrintCharArray/library.json
index b86de7db..93428f29 100644
--- a/libraries/PrintCharArray/library.json
+++ b/libraries/PrintCharArray/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/PrintCharArray.git"
   },
-  "version": "0.3.2",
+  "version": "0.3.3",
   "license": "MIT",
   "frameworks": "arduino",
   "platforms": "*",
diff --git a/libraries/PrintCharArray/library.properties b/libraries/PrintCharArray/library.properties
index b96b571d..78c2cc39 100644
--- a/libraries/PrintCharArray/library.properties
+++ b/libraries/PrintCharArray/library.properties
@@ -1,5 +1,5 @@
 name=PrintCharArray
-version=0.3.2
+version=0.3.3
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Library to capture prints into a char array.
diff --git a/libraries/PrintCharArray/readme.md b/libraries/PrintCharArray/readme.md
index 43e288b5..b12a4098 100644
--- a/libraries/PrintCharArray/readme.md
+++ b/libraries/PrintCharArray/readme.md
@@ -51,7 +51,14 @@ See examples.
 
 ## Future
 
+#### must
+- documentation
+
+#### should 
+- move code to .cpp file
 - testing
+
+#### could
 - examples
   - inject spaces in "middle align" example? possible?
   - rename some