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Walter Castellon CpE & EE Mohammad Amori CpE Josh Steele CpE Tri Tran CpE Sponsored by: Dr. Josh Colwell.

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Presentation on theme: "Walter Castellon CpE & EE Mohammad Amori CpE Josh Steele CpE Tri Tran CpE Sponsored by: Dr. Josh Colwell."— Presentation transcript:

1 Walter Castellon CpE & EE Mohammad Amori CpE Josh Steele CpE Tri Tran CpE Sponsored by: Dr. Josh Colwell

2  Planetesimal to Protoplanet to Planet is well understood  Have gravitational forces  Prior to this stage is still unclear  How do the particles stick together?  High velocity vs Low velocity impacts  Do they hold the key?

3  COLLIDE-3 will be attached to a sub-orbital rocket  Upon entering micro- gravity LED’s and a Camera will be turned on to record the experiment  Next a spherical quartz object will be dropped onto dust/simulant  The camera will record the results of the quartz object and dust/simulant in micro-gravity


5  COLLIDE-3 scheduled to fly on private, experimental suborbital rocket  This rocket had an AVM module which would control all of the functions of COLLIDE-3  The rocket had problems, and was no longer available to us  Dr. Colwell was left with an experiment, but no way to run it  Needed a new AVM if he wished to utilize his experiment on a different rocket.

6  Brain of experiment  Manages hardware/power  Runs COLLIDE-3  Record results  Store results

7  Connected to 28VDC source and 120VAC sources  Low weight  High vibration resistance  Fully automated  Capable of recording greater than 80fps at 640x480 at times ranging from 30s-2m  User friendly  External access to flight variables  Experiment must always update with these new variables  Cost efficient


9  EPIA P820-12 embedded board  Microcontroller  Camera  LEDs  Solid State Drive  Accelerometer  Display Module  Stepper Motor  Micro-step driver  Muscle wire  Wireless Comm

10  LEDs: 2 LED arrays each array has 48 LEDs  Micro-step driver: requires 12v, 5v, PWM  Muscle wire: 1 amp of current at 5V

11  AVM will be able to support both industrial and consumer cameras  SVSI “Stream View-LR” and GoPro “HD Hero”  GoPro is a consumer camera used during initial experiments to reduce financial loss in case of rocket failure  SVSI is an industrial camera that will be used more often in the long run

12 SVSIGoPro 200 FPS60 FPS 640 x 4801280 x 720 Gigabit EthernetNone $5950.00$199.99

13  Can use either serial or USB interface  User friendly software  Will allow user to view current experimental variables

14  Displays all experimental variables  Delay after microgravity  Delay to record  Recording duration  Updates every 1 second

15  Rocketfish micro-USB bluetooth adapter  Data transfer of 3 Mb/s  Range of 20 feet  No interference  Minimal weight and footprint

16  Supported by:  Windows XP, Vista, 7  MAC OS 10.4 and later  Default shared folder is AtMega code  Variables will be top 3 lines for ease of access  Copy file locally  make changes  copy back to shared folder

17  Using SATA II connection write speed is 95 MB/s  Shock Resistance is 1,500 G  Vibration Resistance 2.17G – 3.13G (Operating – Non-Operating) CRUCIAL SeriesM4 InterfaceSATA III/II Capacity60 GB Write Speed95 MB/s Price$79.99

18  Parallax H48C  3-axis readings  Unfortunately, support is for PBASIC language  Need conversion for ATMega  Reads in voltage outputs from each axis and converts into a G-rating using the following forumula:  G = ((axis – vRef) / 4095) x (3.3 / 0.3663)  Our code must do this conversion

19  Pins can sometimes falsely detect G-levels  Costly mistake that needs to be protected against  Will have counter loop that continuously checks flag every.4ms  If pin consistently reads zero gravity for set amount of time, it is not a false positive, and experiment can proceed

20  Hosts the experimental code and the variables that can be changed externally.  Uploads procedure code to the microcontroller  Activates recording for the camera  Handles high speed image transfers from the camera

21  Cost is $310  Windows board  Compatible to all cameras  Flexible to experimental changes  User friendly  Excellent hardware and software support  Smaller form factor

22  Stores experimental variables and procedure  Reads in microgravity mode from accelerometer  Utilizes relays to activate COLLIDE-3 components  Communicates with EPIA P820-12 to power on camera

23  6 dedicated PWM lines  Small footprint  Meets basic requirements  I/O pins  Memory (RAM, EEPROM)  Serial/USB pins  Larger support base  C language (all members familiar)  Familiarity

24  Allows communication between the Arduino program on the P820-12 and the ATMega328  Utilizes the ATMega’s Tx and Rx lines

25  Rocket will only provide standard AC sources and a 28V DC power supply  Our components take 5,6, and 12 volts  12V: Microstep VCC, LEDs  6V: Microstep input, muscle wire  5V: ATMega328  Will utilize DC-DC converters and regulators to convert the 28V to usable levels

26  12V requirements will be handled by CINCON EC7A-24S12  Input voltage range of 18-36VDC  Output voltage regulated at 12V with output current of 835mA

27  6V requirements will be handled by POWER TRENDS PT78ST106H  Takes input voltages from 9-38V  Outputs a constant 6V voltage at a current of 1 amp  Will utilize two of them, since we will use more than 1 amp of current at 6V

28  Finally, 5V requirements will be handled by a standard LM7805 5V regulator  Instead of regulating the 28V input source, this will simply be taking in a 9V battery

29  Since the microcontroller cannot provide enough volts/amps to power COLLIDE-3’s components, it will instead activate a relay, which will have a load of the regulated voltages from the sources previously mentioned  We will implement the AXICOM IMB03C mechanical relay  Handles up to 2A of current  Functions up to 300g of shock, survives up to 500g of shock  100uV control voltage will switch relay, which can have a load up to 220V




33 PinLabelDefinition 1CLKSynchronous clock input 2DIOBi-directional data to and from the host 3VssPower supply ground which is 0v 4Zero-G“Free-fall” detection output; active-high 5CS\Chip select input; active-low 6Vdd+5 vdc

34 Start


36 PartCostPartCost P820$310SSD$79 ATmega328$3.83Accelerometer (H48C) $31.88 Serial to USB converter$15DM$88 Voltage regulator$2Relays$10 Button$1Breadboard$12 Misc. Components$5LEDsIncluded Bluetooth$40Micro-step Driver Included Muscle WireIncludedCamerasIncluded CaseIncluded Total$646.71

37  Communication protocol between EPIA P820- 12 and ATmega328 (FT232R)  Camera compatibility  Changing variables externally

38  Mono  Theft  Crashes


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