I've completed a new release of the Connector/Arduino! The new release contains some major improvements with memory handling.

• The library has been trimmed to save memory.
  • Static strings moved to PROGMEM strings
  • Unused structures removed (e.g. ok_packet)
  • Moved two more methods to optional compilation
• The WITH_SELECT is turned *OFF* by default. If you want to use select queries, be sure to uncomment this in the mysql.h file.
• Added a CHANGES.txt file to track changes between releases.

Memory, What Memory?
If you have used previous versions of the connector in medium to large sketches or have long query strings or even many variables, chances are you have hit the memory limit for your wee Arduino board.

This can manifest itself in a number of ways. Most notably, the sketch may work …

MySQL Connectors provide connectivity to the MySQL server for client programs. APIs provide low-level access to the MySQL protocol and MySQL resources. Both Connectors and the APIs enable you to connect and execute MySQL statements from another language or environment. Oracle provides a number of these, enabling developers to build database applications in the language of their choice. Among those developed by Oracle are drivers for JDBC and ODBC. Any system that works with JDBC or ODBC can use MySQL. And you can find many more, including drivers for PHP, Perl, Python, Ruby, Tcl and even Eiffel!

To get a head start on developing with MySQL, take the MySQL for Developers training course. This …

I've completed a new release of the Connector/Arduino. The new version supports a few refinements and a new feature.

• New! disconnect() method - enables disconnect from server. Note: you must call mysql_connect() to reconnect.
• Better error handling for dropped packets. No more random reboots when bad packet appears.
• Library can recover from short-term loss of connectivity. Along with bad packets is a check to make sure what is received is valid making the connector ignore garbage packets associated with a dropped connection.
• Detection of Out of Memory condition. Should there not be enough memory to allocate the buffer for the Connector, you will see an OOM error (enable the serial monitor to see the errors). This reduces random reboots when memory gets too low.

I made this release because a number of people were running into problems with noisy, tenuous, or just plain …

Chuck Bell, one of my former colleague from MySQL AB, has created a connector for Arduino to MySQL. So this allows Arduino code to be a direct client of a MySQL or MariaDB server, with Ethernet and WiFi shields supported.

With Arduino boards being used more and more, this can come in really handy – not only for retrieving (for instance) centralised configuration data, but also for logging. Useful stuff. Thanks Chuck!

Links

• Introducing MySQL Connector/Arduino 1.0.0 beta (original article)
• MySQL Connector/Arduino on Launchpad
• Freetronics (Arduino gear)

There is a new release of the Connector/Arduino on Launchpad! See https://launchpad.net/mysql-arduino. The new version supports a number of refinements and a few new features. These include:

• Improved support for processing result sets
• Conditional compilation to omit result set handling features to save program space
• Support for the Arduino WiFi shield
• New version() method to check version of the connector
• Simplified download (no more patching SHA1!)

So What is It?
If you have never heard of Connector/Arduino, it is simply a library designed to allow the Arduino platform to connect to and issue queries to a MySQL Database server.

Simply add an Ethernet shield to your Arduino and use the library to connect your Arduino to a MySQL database server. Yes, no more web-based hand waving or third party systems! Cool.

New …

Due to the growing popularity of Connector/Arduino, the moderator of MySQL Forums has created a forum for us to meet up and discuss the connector. Yippie!

http://forums.mysql.com/list.php?175

While the forum has been started very recently, I expect it will grow quickly as people discover the connector for the first time and experienced users find new and interesting ways to use it. I hope to moderate the new forum periodically to answer questions and respond to posts. See you there!

Note: you need an account to write to the forum. Click on "register" in the upper right hand corner of the forum page to create an account if you do not already have one.

MySQL Connector/J 5.1.26, a maintenance release of the production 5.1 branch has been released. Connector/J is the Type-IV pure-Java JDBC driver for MySQL. Version 5.1.26 is suitable for use with many MySQL server versions, including 4.1, 5.0, 5.1, 5.4, 5.5 and 5.6. It is already available for download on the My Oracle Support (MOS) website. The eDelivery download will be available on it's own regular schedule. As always, we recommend that you check the "CHANGES" file in the download archive to be aware of changes in behavior that might affect your application.

MySQL Connector/J 5.1.26 includes the following general bug fixes and improvements, also available in more detail here

Functionality Added or Changed:

• Added a toString() method to the PreparedStatementWrapper class to help debug prepared …

Dear MySQL users,

MySQL Connector/Python v1.0.11 is a new version of the 1.0 production release of the pure Python database driver for MySQL.

MySQL Connector/Python version 1.0 is compatible with MySQL Server versions 5.5 and greater, but should work with earlier versions (greater than v4.1). Python v2.6 and greater as well as Python v3.1 and greater are supported. Python v2.4 and v2.5 are known to work, but are not officially supported.

MySQL Connector/Python v1.0.11 is available for download from
http://dev.mysql.com/downloads/connector/python/#downloads

A brief summary of changes in MySQL Connector/Python v1.0 is listed below. Please check the change log file inside the distribution for a more complete list of changes or online at: …

Have you ever wanted to use a local database server to store data from your Arduino projects? Would you like to be able to send queries directly to a MySQL database from your Arduino sketch? Well, now you can!

The MySQL Connector/Arduino is a new technology made for the Arduino permitting you to connect your Arduino project to a MySQL server via an Ethernet shield without using an intermediate computer or a web-based service. 
Having direct access to a database server means you can store data acquired from your project as well as check values stored in tables on the server and keep the network local to your facility including having a network that isn't connected to the internet or any other network.
Example Code
The Connector/Arduino is an Arduino library that encapsulates everything you need to communicate with a MySQL server. It's also very easy to use. The following shows a simple sketch to connect to a …

LGPL release of MariaDB connectors opens up new possibilities for application developers

As I said last month, SkySQL has the goal of being THE provider of valuable, performance-enhancing and revenue-generating solutions for the 15 million users of open source MySQL and MariaDB databases in enterprise and cloud computing. 

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