Bluetooth Headtracker

Hardware

Built with simple, ready to order parts from common suppliers. Purchase 1 each of the following:

• Bluefruit EZ-Link - bluetooth modem w/ baud rate detection - http://www.adafruit.com/product/1588
• Arduino Pro Mini 3.3V - https://www.sparkfun.com/products/11114
• Power switch - https://www.sparkfun.com/products/102
• GY-86 - 10 DOF flight control module with MPU6050 + HMC5883L + MS5611 - http://www.amazon.com/Arrela-Control-Ms5611-Hmc5883l-Mpu6050/dp/B00KKJYMO6/
• LiPo Battery - https://www.sparkfun.com/products/731
• LiPo Charger - https://www.sparkfun.com/products/10217 (note you need to cut off the JST connector to fit it in the enclosure)
• Small quantity of stranded ribbon cable.

Software

The Arduino runs the FreeIMU_quaternion code. You should only need to upload this once. Be sure to change the baud rate to max for Arduino Pro Mini, 38400 bps.

http://www.varesano.net/projects/hardware/FreeIMU

Reference

other intertial Measmurement Units

Head-tracking with the MPU6050

• using Wire interface - http://www.varesano.net/blog/fabio/initial-tests-freeimu-v04-and-mpu6050
• using i2cdevlib - https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050/Examples/MPU6050_DMP6
• http://www.geeetech.com/wiki/index.php/MPU-6050_Triple_Axis_Accelerometer_%26_Gyro_Breakout
• IMU - https://dev.qu.tu-berlin.de/projects/sf-razor-9dof-ahrs/wiki/Tutorial
• https://www.sparkfun.com/products/11028 or even cheaper from Amazon

Example with Arduino Nano

• http://www.geekmomprojects.com/mpu-6050-dmp-data-from-i2cdevlib/

GY-80=

• https://github.com/vshymanskyy/GY80

GY-86

• http://amzn.com/B00KDMJBFK

IMUs for position

• https://developer.oculusvr.com/forums/viewtopic.php?f=33&t=1679
• https://www.youtube.com/watch?v=6ijArKE8vKU