Launch Readiness Review 4/21/06 -David Gooding -Erik Andersen

1. DemoSat IV Launch Readiness Review 4/21/06 -David Gooding -Erik Andersen -Anna Vigil -Matt Elsner -Augustine Trujillo

2. Mission Description • Successfully launch and land a payload that deploys a rover capable of taking pictures while traveling around the landing site autonomously. DemoSat IV

3. Mission Goals and NASA Benefits • Box land on one of three designated sides. • Be the first team to have box open and rover travel out of box independently. • Rover maneuver around objects correctly. • Rover travel around for at least 10min taking at least 15 pictures. • Encourage learning and team building for students. • A simplistic design is utilized to perform a complicated experiment. • Design techniques allow the payload to land and traverse in nearly all terrains.

4. System Requirements • Weight Specification - 1800g • Sense landing autonomously - micro switches • Carrier must open autonomously and upright - rat traps • Rover must drive out of carrier autonomously - program • Rover must take pictures of landing site - program DemoSat IV

5. Carrier Rover Detect Emitter PIC Running During Flight Turn Camera On Initialize Pins Switches Pressed Run motor program: Forward DemoSat IV 10 Min Elapsed? No No: reset Object Sensed? Yes Send Signal to Emitter Yes Send Signal to Motors to Stop Signal to motor to open box Take Picture Turn

6. Subsystem Description Rover • Oopic/ microcontroller board • Two gear boxed motors • Motor driver • IR Sensor • Camera • IR Detector • Batteries Carrier • Micro switches • PIC 16F819 • Emitter • Transistor switch • Box switches • Micro motor • Batteries

7. Subsystem Description: Carrier • Micro switches – Sense landing. Must be pressed for a continuous 5 minutes. • PIC – Once 5 min has elapsed a signal is sent to turn on emitter. • Emitter – Emit IR signal to detector on Rover to turn it on. • Transistor switch – The base is being saturated allowing voltage to flow through it to the motor. • Box switches – Manual opening and closing. • Micro motor – Opening/closing mechanism for carrier. • Batteries – 1-9v for PIC, 2-AA for motor.

8. Schematic of Subsystem: Carrier DemoSat IV

9. Subsystem Description: Rover • IR Detector – Sense emitter to turn Rover on. • OOPic/ microcontroller board – Object oriented with built in functionality to perform extensive electronic commands. • Gear boxed motors – 6 gear box motor. • Motor driver – Takes a PWM signal and converts it into speed and direction of 2 independent motors. • IR sensor – Sense objects: avoid obstacle / picture. • Camera – Take pictures of landing site. • Batteries – 1-9v for OOPic, 4-AA for motor drivers.

10. Tamiya 6-Gearbox MD22 Motordriver Tamiya 6-Gearbox Camera Relay Circuit FlatFoto Digital Camera 3MP OOPic IR Detector IR Scanner (Sharp GP2D12) Block Diagram of Subsystem: Rover DemoSat IV

11. Expenses DemoSat IV

12. Mass Budget DemoSat IV

13. Testing • Carrier opening • Micro motor with latch • Rover traction • Wheels with tracks and spikes • Drag test • Trash bag stayed in tact • Drop test • Rover stayed in place • Cold test • In Freezer for 1 ½ hours. No Voltage loss. DemoSat IV

14. Full Function Test DemoSat IV

15. Project Organization • David – Rover circuitry and programming • Erik – Mechanical design and implementation • Anna – Carrier electronics and programming • Matt – Carrier electronics + rover mechanics • Augustine – Carrier opening design and implementation. DemoSat IV

16. Questions???