Major Project

1. Proposed Topic2. Introduction3. Objective4. Literature Review5. Problem Formulation6. Sensors and Microcontrollers

7. Methodology8. Applications9. Work Done in Phase-I10. Work for Phase-II11. Expected Results12. References

WiSH-GHIDWireless Single Handed Gyration based Human

Interface Device

• Human Interface Devices(HID’s)- HID is a type of computer device that interacts directly with, and most often takes input from, humans and may deliver output to humans. The term "HID" most commonly refers to the USB-HID specification.

• Gyration-Gyration is a kind of rotation. The center of rotation is at rotating point itself.

To Design a hand held wireless stick replacing traditional wired mouse that can be used to

• Operate the PC or notebook Over the Air.

• Can be used for giving presentations remotely and for many other tasks.

• Enhancing feature is that it does not even need any flat surface to operate.

• Studied the concept of Wireless communication of data by sending the data in packets using CC2500 module operating at standard frequency of 2.4Ghz.Link: http://www.ti.com/product/cc2500

• Studied the protocol for HID i.e. a host and a device. It includes the study of various software codes already available open source and the projects based on HID.Link: http://en.wikipedia.org/wiki/Human_interface_device

• Jadon Clews, 2008 Dept of Mechanical Engineering, Curtin University of Technology, Project Report on Wireless Accelerometer Based HID Compaint PC interface.

Step-I: To interpret the data from Hand Gestures.

Step-II: To transmit the data Over the Air.

Step-III: To process the data at receiver end and perform the intended operation.

CC2500 Module:

•Used to establish wireless link between Receiver & Transmitter.

•FSK Transceiver module operating at 2.4GHz at 3V.

•Baud rates upto 38400.

•Protocol Used: SPI

•Range:60 meters(Line of Sight) 30 meters(range indoors)

L3G4200D:

•Three-axis MEMS ,Angular rate Gyro sensor used to measure the rotation in x(pitch), y(roll) and z(yaw) axis.

•Stable output over a large range of time and temperature.

•Power consumption: Low(mW)

•Protocol: I2C/SPI

Atmega8:

• Characteristics: 8 Bit AVR. • Used to take input from the MEMS sensor.

•Encoding of the data.

• Used as VUSB as the firmware for the HID is embedded in it.

Media Center and Home theater PC (HTPC) users

Corporate boardrooms and conference rooms

Road warriors and sales people 

Casual/computer gamers

Professional trainers and instructors

Teachers and college professors

aaa Step I: Literature Review.

Step II: Interfacing of Atmega8: It is the main data controlling unit meant for I/O controls i.e. input from gyro sensors and transmitting over wireless link using CC2500.

Step III: Wireless link via CC2500: CC2500 has been interfaced with CC500.Primarily work has been done and testing of small programs has been done with it.

• Gyroscope Interfacing and Calibration

• Complete Data Interface

• Driver Coding

• Final Hardware Design

• Testing and Calibration

• The gadget will be in the form of a handy stick.Could be used to interact with PC/Notebook remotely.

• The Design proposed is Universal with respect to all platforms like Windows, Linux.

• Overcomes the problems faced with existing gadgets.

• Jadon Clews, 2008 Dept of Mechanical Engineering, Curtin University of Technology, Project Report on Wireless Accelerometer Based HID Compaint PC interface.

• http://en.wikipedia.org/wiki/Human_interface_device• http://www.ti.com/product/cc2500• www.element14.com• www.sparkfun.com• www.ieee.org• www.usb.org• www.st.com