Kickstarter for version 4 of ArduIMU:

Initially, the ArduIMU project was started as an open source project by 3DRobotics in 2007 to create an inertial measurement unit based on the Arduino™. We contributed to the software development of that project, but, the initial ArduIMU was meant to be used solely as an inertial measurement unit. We want to do better than that; so we developed a brand new platform with other sensors such as a barometer, relative humidity sensor, and light sensor. We also included wireless communication capabilities as well an SD card for data logging and storage. Since then, we have gone through many revisions, adding even more sensors and functions which are present in the latest ArduIMU V4. With this new augmented and improved sensor board we are redefining the term IMU. We proudly present our Arduino™ based Integrated Measurement Unit: the ArduIMU V4... (cont'd)