FLIG

HT READIN

ESS

REVIEW

TE

AM

HA

WA

I I

LEO H

ANO

FULL

SCALE

LOW

POW

ER

Mar

ch 1

3, 2011

Mot

or =

K780R

LEO H

ANO

FULL

SCALE

LOW

POW

ER

Mar

ch 2

0, 2001

Mot

or =

K1000W

OVERVIE

W

Drogue• 42in• 83.59 ft/sec

Main• 144in• 22.45 ft/sec

PARACHUTES

Main Charge

Drogue Charge

DUAL DEPLOYMENT AVIONICS TEST

65.2 ft/sec

Reach safe speed at 66.34 inches

RAIL EXIT VELOCITY

HULA-HOOP2 PLANNED FEATURES

2 memory optionsModel A: 256 Kbytes – built on multiple circuit boards to be flown on the Leo Hano rocket

Model B: 128 Kbytes – built on one circuit board to be flown on an Executioner rocket

One version of the program code for all units

Variable sample rates – between 1 to 6 samples per second

HULA-HOOP2 SUBSYSTEMS

Controller Main serial interface Debug port serial interface Field Input and Output

Data storage

Sensors & Analog to Digital Convertors (ADC) Temperature Acceleration Magnetic field 12 bit ADC

Power

BLOCK DIAGRAM – V3

BS2p controller

I2C bus

EEPROM(24LC512)

SPI data bus

Accelerometer(MMA7455)

ADC #1(MCP3208)

Coil X

Coil Z

Hula-hoop203/18/11version 3.1

TemperatureSensor (LM34)ADC #2

(MCP3202)

Coil Y

C O N T R O L L E R

Parallax Basic Stamp 2p features:

24 pin DIP 8 code and/or data

segments at 2 Kbytes per segment

16 digital Input/Output interfaces

Debug and program upload interface

Voltage regulator at +5 Volts

DATA S T O RAG EMicro Technology

24LC512-I/P EEPROM features:

8 pin DIP capacity of 65,536 bytes or

64 Kbytes per chip I2C interface

Memory sizes Model A: 4 chips for 256

Kbytes Model B: 2 chips for 128

Kbytes

SENSORS

T E M P E RAT U R E :

National Semiconductor LM34 features:

3 pin TO-92 caseAnalog Output

Connected to ADC#2

AC C E L E RAT I O N :Parallax’s Freescale

MMA7455 Accelerometer features:

wider than usual 8 pin DIP SPI or I2C interface – using SPI 3 axis acceleration choices of 2g, 4g or 8 g – using

8g 8 bit or 10 bit resolution – using

8 bit Digital Output

Data stream 8 bits in 8 bits out

SENSORS: MAGNETIC FIELD

Custom built inductors

Analog Output

3 coils will be used, one for each axis (X, Y and Z)

Each coil will have its own 4 resistor network that will be connected to ADC#1

A N A L O G T O D I G I T A L C O N V E R T O R S : 1 2 B I T A D C # 1

Micro Technology MCP3208 features

16 pin DIP 12 bit resolution 8 single ended input channels SPI interface Adjustable voltage reference

(.25 to 5 volts) while keeping the device’s power supply at 5 volts. Will be set at 1 volt

Data stream 6 bits in 12 bits out

A N A L O G T O D I G I T A L C O N V E R T O R S : 1 2 B I T A D C # 2

Micro Technology MCP3202 features

8 pin DIP 12 bit resolution 2 single ended input

channels SPI interface

Data stream 4 bits in 12 bits out

MAHALO