Marvin Camarillo – Team Leader NEWARK MEMORIAL HIGH SCHOOL ROCKETRY TEAM 2 ANALYZING SENSOR PRECISION AND ERROR Team Members: Marvin Camarillo – Team Leader Grace Fernandez Madaisha Wilson Aya Marmash Kishen Maharaj Matthew Ryan Adriana Crowley Alec Rodriguez

QUESTION AND HYPOTHESIS Found the error margin in our research of the sensors based on the Sparkfun website The measurements are within 5% of the error margin for the humidity/temperature sensors, the 2 to 4.5% error range for the magnetometer sensor, and the 1.5 to 2% error range for the barometric pressure sensor How precise are the S4 sensors to one another when analyzed from the same flight? We predict that there will be a 10% variance in the temperature/humidity sensor, an 11% variance in the magnetometer sensor, and an 4% variance in the barometric pressure sensor. We have determined these number based off of our research of Sparkfun

PROCESS DESCRIPTION How we got ready for the competition: With no prior experience we began with learning the basics parts of an S4 payload and how to solder circuit boards Onced trained in soldering; went ahead and built an S4 sensor board Testing: High powered launch fields Reviewed SD cards on sight after launch from land to rocket Launches varied from successful to unsuccessful Learned that we need to secure and double check our equipment Data: Learned how to read and apply data to proposal

ROCKET DESIGN Starting point: Payload Two S4 payloads Two Sensors side by side as opposed to being in different locations with varying results Crucial for data analysis to have sensors side by side for it can process better results within the same location 5.5 inch inner diameter body tube. Optimal fit for the sensors Measurements: Payload Holder Height - 15in Length: 2 ½ in Cable - 8 in. long One sensor: 7.25 in. long and 1.25 in. wide

Our Flight Data and Graphs (Maverick & Viper) SENSORS AND DATA Our Sensors The Triple Axis Magnetometer Breakout - HMC5883L, The Humidity and Temperature Sensor Breakout - HIH6130, The Barometric Pressure Sensor Breakout - BMP180 Our Flight Data and Graphs (Maverick & Viper) 1. 2. 3. Magnetometer is needed to measure both the direction and the magnitude of the Earth’s magnetic fields, is within a margin of one to two degrees of accuracy. The humidity and Temperature is which combines humidity and temperature readings, allowing the relative  humidity measurement to be temperature compensated and also gives a second, standalone temperature sensor output, has a margin of 4+% RH accuracy and total error band of 5+% (Relative Humidity). re The Barometric Pressure Sensor Breakout - BMP180 offers a pressure measuring range of 300 to 1100 hPA with a+2.0 to +4.5 hPA absolute accuracy of pressure margin and an absolute accuracy of temperature within a margin of +1.5 to +2.0 °C. What the humidity and temperature sensor includes. operating voltage: 2.3-5.5v. compensated humidity range: 10-90% RH. compensated temp range: 5-50 *C. true temperature compensated digital 12c output. wide operating temperature range allows for use in many applications.

DATA ANALYSIS AND EVALUATION Compared the Altitude Sensor to our calculated altitude Compared the Magnetometer X sensor of same flight of 2 different sensors Used formula: =-8240*LN(Baro Pressure/101325) To calculate altitude from measured barometric pressure To show the precision of the sensor on our S4 sensors, we compared the altitude sensor’s data to the data we got from our own calculations. To get our own data, we used the data from the pressure sensor and used the formula =-8240*LN(Baro Pressure/101325) to calculate the altitude from the measured barometric pressure. After, we compared the altitude sensor data to the calculated altitude from the barometric pressure in line graphs to see how precise the altitude sensor is.

Comparing the Sensors Maverick Sensor vs Viper Sensor (altitude via Barometric Pressure) Maverick Sensor vs Viper Sensor

Magnetometer X graph Temperature Graphs

Data Process

CONCLUSIONS Discovered... The orientation of the S4 sensors affects data The altitude sensor was imprecise due to the GPS having variance in data The pressure sensor was a more precise representation of altitude and had provided a constant reading That the temperature sensor has a 0.085507% variance, the barometric sensor has a 0.005074% variance, and the magnetometer has a 0.291186% variance.

Magnometer Graph

Obstacles Orientation matters - SD card would eject during launch, batteries would unplug, data would be inverted Building - designing an S4 Payload, learning how to solder, learning how to program Data - learning to read and analyze data, problem solving, losing data and corrupt data

COMMUNITY OUTREACH Science in the park Explained how rockets function and the factors that affect the rocket’s flight to students, parents, and others who attended the event Displayed live rocket launches Elementary School Science Night Visited the city of Newark and their many elementaries Explained the concept of rocketry and displayed live rocket launches (just as Science in the park) Provided a small-hands on activity for kids Impacted around 60-100 people Our team and organization collectively has always kept our community in mind and how we can become more involved and recognized. As of the start of the school year we actually have done work in collaboration with the community and local programs. The leadership in our program is always on the lookout for outlets that our program can be involved in and demonstrate to new people. That being said our initial plan for outreach is to contact our previous institutions, more specifically science instructors so that way may collaborate and fit in with their curriculum.

OUR S4 CLASS EXPERIENCE Something New? Looked at the different sets of analysis Analyzed data and processed how to use it to manipulate flight patterns Learned about sensors and the measurement of atmospheric factors: Such as humidity, temperature, air pressure, and the Earth’s magnitude All have different and significant effects on the vector quantities Small lessons such as: Soldering, improving traits/skills, and procrastinating to fulfillment Did we like it? OF COURSE!! Gained new friendships and learned how to work well with others Was given the chance to venture into both the terminology of science and rocketry What did you get out of this experience? What new skills did you gain from doing this? -Madaisha: From this experience I've learned many facts, gained new friends, and of course gained knowledge in relation to rocketry. The S4 experience has given me and many others the chance to venture into both the terminology of science and rocketry. Learning about analyzing data to correcting why such and such happens within the S4 payload holder and the group of sensors that feature the altitude, wind measurement, temperature and more. -Alec: How to build a rocket and improve my skill in working with others. -Kishen: That my team can clutch it in the last few days. -Grace: Looking at the sets of analysis, along with analyzing data and how to use that data to manipulate flight patterns. -Aya: Soldering, working with others and meeting new people, and learning about sensors. -Marvin: -Matt: -Adriana: