This document summarizes a seminar on controlling an industrial robotic arm using accelerometer-based gestures. The seminar covered: 1. A gesture-controlled robot that can be operated through hand gestures detected by a small transmitting device worn on the hand, containing an accelerometer. 2. The gesture device contains an accelerometer to detect motion, a comparator to convert analog signals to digital, an encoder to convert signals to radio format, and an RF transmitter to send commands wirelessly. 3. The robot contains an RF receiver to receive commands, a decoder to convert radio signals to motor commands, a microcontroller (ARM 7) to process commands, and a motor driver to operate the robotic arm.

1. ADARSH INSTITUTE OF TECHNOLOGY
& RESEARCH CENTRE , Vita
Seminar
on
“Accelerometer based control of an industrial
robotic arm ”
Presented by :
1. Mr. JAMDADE NITIN
2. Mr. NALAWADE KRISHNA
3. Mr. MANGRULE PADMAKAR
UNDER THE GUIDANCE OF
MR. A. I. NADAF

2. OBJECTIVES
OBJECTIVES
A Gesture Controlled robot is a kind of robot which can be
controlled by your hand gestures not by old buttons
You just need to wear a small transmitting device in your hand
which included an Accelerometer. This will transmit an
appropriate command to the robot so that it can do whatever
we want

3. CONTENTS
INTRODUCTION
PROJECT PARTS & MODULES
ACCELEROMETER
COMPARATOR
ENCODER
RF TRANSMITTER & RECEIVER
DECODER
ARM 7
MOTOR DRIVER

4. INTRODUCTION
A gesture is a
form of nonverbal communication.
A
robot is a
mechanical device that can
perform tasksautomatically.

5. This
project contains two
parts mainly:-
Gesture
Device
Robot

6. GESTURE DEVICE

7. Gesture Device Contains Basic
ally Four Modules:ACCELEROMETER
COMPARATOR
ENCODER
RF
TRANSMITTER

8. ACCELEROMETER
Accelerometers are available that can
measure acceleration in one,two,
or three orthogonal axes.
The
basic principle of operation behind
the accelerometer is the displacement of
a small proof mass etched into the silicon
surface of the integrated circuit and
suspended by small beams.

9. Figure:-Accelerometer

10. COMPARATOR(LM324)
An electronic circuit for comparing
two electrical signals.
For the purpose to change the
analog voltage into digital we use
comparator which compare that
analog voltage to a reference
voltage and give a particular high or
low voltage.

11. Basic Comparator Circuit
Input(-)
output
Input(+)

12. Output Of Comparator

13. ENCODER(HT12E)
An
encoder is a device, that
converts information from one
format to another.
Here we are using encoder
for converting parallel data into
serial data.
The HT12E is an 4bit encoder which
encode the input data applied on
it .It is mainly used in interfacing RF
and infrared circuits.

14. Figure:-Encoder(HT12E)

15. RF Transmitter: The
word RF stands for “Radio Frequency”.
 The
radio frequency has ability to cross obstacles
plus it provides good coverage of 30 meters.
 The
corresponding frequency range varies between
30 kHz & 300 GHz.
 In
this RF system, the digital data is represented as
variations in the amplitude of carrier wave. This kind
of modulation is known as Amplitude Shift Keying
(ASK)

16. Robot Contains Basically Four
Modules: RF Receiver
Decoder(HT12D)
ARM
7
Motor Driver

17. Basic Circuit Of RF Rx:-

18. DECODER(HT12D)
A decoder is a device which does th
ereverse operation of an encoder.
Original information can be
retrieved.
HT12D converts that serial data
into parallel.

19. Figure:-Decoder(HT12D)

20. ARM 7 PROCESSOR
Arm
processor is a high performance
,low power device used widely for
wireless embedded systems.
The ARM processor is based on a 16-bit/
32-bit.

21. ACTUATOR (L293D)
It
is a motor driver.

The Actuator's are those devices
which actually gives themovement or
to do a task like motor's.
To get interface between motor
and ARM 7 . We use L293D motor
driver IC in our circuit

22. THANK
YOU