ArduinoJson 5.4.0

Changes since v5.3.0

• Changed ::String to ArduinoJson::String (issue #275)
• Changed ::Print to ArduinoJson::Print too

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.4.0.zip.
You can also use the library manager from the IDE; it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.4.0-old-layout.zip.
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.3.0

Changes since v5.2.0

• Added custom implementation of ftoa (issues #266, #267, #269 and #270)
• Added JsonVariant JsonBuffer::parse() (issue #265)
• Fixed unsigned long printed as signed long (issue #170)

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.3.0.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.3.0-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.2.0

Changes since v5.1.1

• Added JsonVariant::as<char*>() as a synonym for JsonVariant::as<const char*>() (issue #257)
• Added example JsonHttpClient (issue #256)
• Added JsonArray::copyTo() and JsonArray::copyFrom() (issue #254)
• Added RawJson() to insert pregenerated JSON portions (issue #259)

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.2.0.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.2.0-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.1.1

Changes since v5.1.0

• Removed String duplication when one replaces a value in a JsonObject (PR #232 by @ulion)

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.1.1.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.1.1-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.1.0

Changes since v5.0.8

• Added support of long long (issue #171)
• Moved all build settings to ArduinoJson/Configuration.hpp

Breaking change

If you defined ARDUINOJSON_ENABLE_STD_STREAM, you now need to define it to 1.

#define ARDUINOJSON_ENABLE_STD_STREAM

#define ARDUINOJSON_ENABLE_STD_STREAM 1

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.1.0.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.1.0-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.1.0 beta 2

Changes since v5.1.0-beta.1

Fixed build on Visual Studio 2010 and 2012, MinGW32 and GCC 5

Known bugs

None! Please open an issue if you find something.

ArduinoJson 5.1.0 beta 1

Changes since v5.0.8

• Added support of long long (issue #171)
• Moved all build settings to ArduinoJson/Configuration.hpp

Breaking change

If you defined ARDUINOJSON_ENABLE_STD_STREAM, you now need to define it to 1.

#define ARDUINOJSON_ENABLE_STD_STREAM

#define ARDUINOJSON_ENABLE_STD_STREAM 1

Known bugs

None ✅
If you find something please please please open an issue!

ArduinoJson 5.0.8

Changes since v5.0.7

• Made the library compatible with PlatformIO (issue #181)
• Fixed JsonVariant::is<bool>() that was incorrectly returning false (issue #214)

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.0.8.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.0.8-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.0.7

Changes since v5.0.6

• Made library easier to use from a CMake project: simply add_subdirectory(ArduinoJson/src)
• Changed String to be a typedef of std::string (issues #142 and #161)

BREAKING CHANGES:

• JsonVariant(true).as<String>() now returns "true" instead of "1"
• JsonVariant(false).as<String>() now returns "false" instead of "0"

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.0.7.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.0.7-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.

ArduinoJson 5.0.6

Changes since v5.0.5

• Added parameter to DynamicJsonBuffer constructor to set initial size (issue #152)
• Fixed warning about library category in Arduino 1.6.6 (issue #147)
• Examples: Added a loop to wait for serial port to be ready (issue #156)

Which package to download?

If you are running the official Arduino IDE, download ArduinoJson-v5.0.6.zip.
You can also use the library manager from the IDE, it will download the library for you.

If you are running an alternative IDE (like Energia or Stino), download ArduinoJson-v5.0.6-old-layout.zip
This package has the legacy library layout that was supported by older versions of the Arduino IDE.