1. Team Thumbs Up Launch Readiness Review Nick Lenk Eddie Cyrus Brian Inglis Chase Prichett Greg Nelson Jake Varey 11/11/08

2. Overview Launch is on November 15, 2008 BalloonSat will take readings of photodiodes and solar panels every 5 seconds during flight Voltage Readings will be analyzed based on altitude to see how light increases as the BalloonSat enters near-space

3. Design Overview A cube of dimensions 16 x 16 x 16 cm with six photodiodes (one on each side) will be hooked up to HOBO data loggers taking voltage data A solar panel on each side (except bottom) will also take in light and we will record that voltage as well Heating circuit for warmth Camera taking pictures every 20 seconds

5. Test Results Photodiode Functionality Test Indoor –Multimeter read.25 V ±.01 for each of the photodiodes Outdoor –Multimeter read.53 V ±.01 for each of the photodiodes

6. Tests (cont.) Photodiode Calibration Test –Under a known amount of light (9 Watts) the photodiodes read.41 V ±.01 Solar Cell Calibration Test –Under the same light (9 Watts) the solar panels read 1.42 V ±.05

7. Tests (cont.) Connected Functionality Test –A string of 3 photodiodes wired in series outdoors read roughly 1.5 volts –We determined that we must wire the photodiodes in strings of two to ensure that the HOBO limit of 2.5 volts is not reached –Solar Panels must be also wired individually for same reason

8. Connected Functionality Test

9. Tests (cont.) HOBO/Photodiode Compatibility Test –Photodiodes were soldered to the wires of the voltage cables which have HOBO compatible 2.5 mm plugs. –Readings for this test were near to exactly what the volt-meter read

10. Tests (cont.) Digital Camera Test –Camera was set to take pictures every 20 seconds for a period of 135 minutes and we collected the predicted 405 pictures

11. Tests (cont.) HOBO Test / Cold Test –2.5 hour cold test Internal Temperature Heater Starts Helping Camera Lens Retracts

12. HOBO/Cold Test (cont.) Relative Humidity External Temperature Ice block placed next to sensor

13. Structural Tests

14. Flight Predictions We predict an increase in voltage by as much as 100% (double) from ground to burst.

15. Worries …

16. RFP/Proposal/Requirement Compliance Matrix RequirementOptimism PrimeCompleted Under 1 Kilo872.8 g √ Under $150$33.00 √ Digital CameraA570IS Canon Digital Camera √ Additional ExperimentPhotodiodes and Solar Panels √ Foam Core-Foam Core Structure -Foam insulation √ Metric UnitsDegrees Celsius, Meters √ No one getting hurt …