Senior Design Project High Altitude Balloon STRUCTURE STABILIZATION

Senior Design Project: High Altitude Balloon STRUCTURE STABILIZATION SYSTEM Two Part Design Reaction Wheel Balloon Harness ‘Cage’ (Aluminum Support) ● Structural Support ● Antenna Ground Plane ● Component Secondary Thermal Sink Maxon Motor & Controller ● EC 90 Flat, 90 mm Diameter Brushless, with Hall Sensors ● ESCON 70/10 4 -Q Servo-controller Component Layers (Polyethylene Enclosure) ● Houses all internal components ● Five individual layers for assembly 14’’ Diameter, 10’’ Height, less than 2 lbs GEOLOCATION / RECOVERY DATA / VIDEO ACQUISITION Host Control & Sensor Board Sensor Nodes ● ● ● 4 x HD Cameras Temperature and Pressure Sensors IMU Isolated power supplies UART communication with host board Tracksoar APRS MSP 430 Host Board ● Center of communication between all sensor nodes and ground communications ● Responsible for reaction wheel motor control using MSP 430 and IMU ● All data is saved locally on SD card including temperature and pressure sensor data Geolocation System over the 2 m Amateur Radio Band (144. 390 MHz) LIVE VIDEO w/ DATA OVERLAY ● ● ● 4 Analog NTSC camera sensors Analog video multiplexer Live programmable analog on-screen display Can receive ground commands for control Live transmission over amateur television bands Video Chain (4) Camera Sensors ↓ Analog Video Mux ↓ Overlay Board ↓ ATV Transmitter 9 x - 7500 mcd LEDs 1 x - 105 d. B Buzzer DATA / COMMAND TX/RX ● ● Transmit telemetry to the ground on the 2 m band Receive commands from the ground Baofeng Radio used as a transmitter/receiver Set-up: ■ Soundmodem running on a Raspberry Pi Zero encoding/decoding AX. 25 packets as audio ■ USB sound card connects the Raspberry Pi Zero to the radio Group Members EE: Steve Giewont, Lincoln Glauser, Connor Goldberg Chris Schwab, Adam Steenkamer, Matt Zachary ME: Sydney Kaminski, Ian Prechtl GRSS (Global Recovery Signalling System)