1. MEMS BASED HANDMEMS BASED HAND
GESTURE ROBOTGESTURE ROBOT
CONTROLCONTROL
CONTROLCONTROL
CONTROLCONTROL

2. WHAT IS THE PROJECT ALLWHAT IS THE PROJECT ALL
ABOUT??ABOUT??
ABOUT??ABOUT??
To Control the movement of robot wirelesslyTo Control the movement of robot wirelessly
using hand gesturesusing hand gestures

3. WHAT IS MEMS ?WHAT IS MEMS ?
MEMS Means micro electro mechanical systemMEMS Means micro electro mechanical system
It is a mechanical device driven by electricityIt is a mechanical device driven by electricity
It converts mechanical hand movements intoIt converts mechanical hand movements into
equivalent electric signalsequivalent electric signals
Among many of the MEMS devices 3-AxisAmong many of the MEMS devices 3-Axis
accelerometer is oneaccelerometer is one

4. HARDWARE USEDHARDWARE USED
Micro controller ATMEGA-8Micro controller ATMEGA-8
MEMS sensorMEMS sensor
DC motorDC motor
Motor driver circuitMotor driver circuit

5. Block DiagramBlock Diagram

6. MICRO CONTROLLER(ATMEGA-8)MICRO CONTROLLER(ATMEGA-8)
low-power CMOS 8-bit micro
controller, based on the AVR
enhanced RISC architecture
8K Bytes of In-System Self-
programmable Flash program
memory
8-channel ADC in TQFP and
QFN/MLF package
On-chip Analog Comparator

7. ACCELEROMETERACCELEROMETER
3 Axis Acceleration Sensor
Board.
User could get acceleration value
of X, Y, and Z axis.
widely used in shock, slope, and
moving detection.
The output analog.
Used in tilt Sensing applications

8. MOTOR DRIVE(L293D)MOTOR DRIVE(L293D)
Usable from 6 to12V
Two DC motors can be driven
simultaneously
Has output current of 600mA and
peak output current of 1.2A

9. WORKINGWORKING
Based on user hand gesturesBased on user hand gestures
the accelerometer sends thethe accelerometer sends the
analog signals to the microanalog signals to the micro
controller.controller.
The internal ADC moduleThe internal ADC module
present in the micro controllerpresent in the micro controller
converts the analog data toconverts the analog data to
corresponding datacorresponding data
compatible with the motorcompatible with the motor
driver i.e digital formdriver i.e digital form

10. WORKINGWORKING
This data is compared to the
mean values given by the
user(us) the relative shift in the
data is calculated to
determine the movements of
the motor in either forward or
backward direction
These signals are given to the
motor driver
It can be controlled wirelessly
at the range of 50-1600m

11. CONCLUSIONCONCLUSION
By these kind of human and machine interfaceBy these kind of human and machine interface
the control and steering of the futurethe control and steering of the future
technology can be modernizedtechnology can be modernized
This technology is very useful for physicallyThis technology is very useful for physically
challenged peoplechallenged people

12. ANY QUERIES ?ANY QUERIES ?

13. THANK YOUTHANK YOU
S.AdityaS.Aditya
245110735057245110735057
ECE-4/4 AECE-4/4 A