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MICROPROCESSORS
PROJECT
TOUCH TO SING
Carried out by
• Aniruddha Harish (G00858537)
• Ankit Gala (G00852236)
• Jaswant Katragadda (G00862743)
• Prashanth Prakash (G00858562)
Volgenau School of Engineering, ECE Dept ECE 511 1
MOTIVATION
• Children generally tend to get attracted to bright
colors and unique sounds and this has a lot of
advantages.
• Keeping these things in mind we thought of designing
a crawler that sings rhymes when a child touches it.
Volgenau School of Engineering, ECE Dept ECE 511 2
Touch to Sing
3
Touch to Sing
M
S
P
4
3
0
DC MOTOR
IR SENSOR
SD CARD CIRCUIT
M
S
P
4
3
0
CAPACITIVE
TOUCH
BOOSTER PACK
Volgenau School of Engineering, ECE Dept. ECE 511
(P1.7)
L293D (P2.1) (P2.2)
(P2.4) (P2.4)
BLOCK DIAGRAM Touch to Sing
Volgenau School of Engineering, ECE Dept. 4
Components Used
* Hexapod Crawler
* MSP 430 Launchpad
* H-Bridge
* Geared DC Motor
* IR Sensor
* Capacitive Touch Booster Pack
(430BOOST-SENSE1)
* Batteries
* Jumper Wires
* Micro-SD Card
*Mp3 Trigger.
Touch to Sing
ECE 511
Volgenau School of Engineering, ECE Dept 5
* Generating PWM from msp430 for DC motor.
* Configuring ADC for IR sensors.
* Capacitive Software Libraries.
* Configuring UART for MP3.
START
MOVE FORWARD
OBSTACL
E
TOUCH
SING
REVERSE
MOVE RIGHT
Yes
No
5 Volgenau School of Engineering, ECE Dept. ECE 511
Touch to Sing How it Works ?
Yes
No
Volgenau School of Engineering, ECE Dept. 7
• 4V 50 rpm Geared DC Motor
• Generating PWM to control and
steer the device.
• PWM using Timer A.
• L293D dual H bridge motor
driver.
Geared DC Motor Touch to Sing
ECE 511
Volgenau School of Engineering, ECE Dept. 8
MSP 430 CAPACITIVE TOUCH BOOSTER PACK
(430BOOST-SENSE1)
Touch to Sing
ECE 511
*The Capacitive Touch Booster Pack is a plug
in board for the MSP430 Value Line
Launchpad development kit.
*The Capacitive Touch Booster Pack features
several capacitive touch elements including a
scroll wheel, button and proximity sensor.
*Also, on-board are 9 LEDs that provide
instant feedback as users interact with the
capacitive touch elements
* Includes a
preprogrammed MSP430G2452IN20 with demo
application
*Fully supported by the MSP430 Capacitive
Touch Sense Library
Volgenau School of Engineering, ECE Dept ECE 511 9
Touch to Sing
IR SENSOR
Sharp Analogue Infra-Red Range Finding System
(AERS)
• This is the IR sensor used to check the
proximity of the object or any obstacle.
• This is a distance measuring sensor unit, It has
integrated combination of PSD,IRED and signal
processing circuit.
• Distance measuring range : 20 to 150cm
• Analog output type
• Consumption current : 33 mA
• Supply voltage : 4.5 to 5.5 V
Device Specifications
Volgenau School of Engineering, ECE Dept 10
*
Volgenau School of Engineering, ECE Dept 11
*
*Store MP3 files on uSD card using the naming convention –
001 filename.mp3.
* Store the initialization file on the uSD.
* Touch pad pressed Using UART communication,
send a trigger from the MSP.( single file used).
*Once the file starts playing, based on the length of the file,
a delay loop is started and upon reaching ‘0’, the motor
starts again.
Volgenau School of Engineering, ECE Dept 12
* DC motors PWM.
* IR sensor ADC module.
* Touch Pad module.
* MP3 trigger circuit.