Sam Dodge Mentored by Dr. Tom Sharp Electronics System

Arduino Microcontroller Programmable in C 6 Analog Inputs/Outputs, 15 Digital Inputs/Outputs A multiplexer was used to extend the number of analog pins to 13 Records time

OpenLog Data Logger Connects to arduino serial pins Writes to a standard text file

Sensors Humidity Sensors 2 Gas Sensors 3 Axis Accelerometer Pressure Sensor 2 Temperature Sensors Geiger Counter

Camera Control Still camera takes a picture every 8 seconds Video camera takes 10 minute video clips to prevent from turning off Both are controlled by digital pins

Post Launch Data Processing File from data logger can be imported into excel for analysis MATLAB was also used to analyze the results

What went wrong?

Problems Battery enclosure on camera Voltage Regulator Low batteries Arduino physical reset switch Voltage on arduino pins controlling digital sensors

How can we fix it?

Circuit Board Etching Less dependant on wire connections A more reliable design would use one board rather than two Can’t be easily changed

Better Cameras Video Camera Still Camera –Some cameras can be hacked to take pictures by themselves at a set time interval With better cameras, they can be isolated from the rest of the system

Other Better Testing Redundant Power Systems –Is redundancy worth the extra weight? Complexity vs Reliability

Future Additions Photodiodes More reliable sensors Different sensors Working Video Camera

Thank You