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The purpose of this project is to give the knowledge and open source code on how to build a flight computer (On Board Computer (OBC)) for an amateur model rocket for research and science projects.

The Arduino code is in theOBC directory, and it's divided in subfiles for ease of use. To run it you have to compile deOBC.ino file.

Is a simple data logger that stores the values of the sensors in a CSV file for further analysis. Is also activate a servo motor when detects free fall for a parachute deployment mechanism.

POA is an achronym of "Pillar Of Autumn", the coolest spaceship of Halo Reach

The method for storing info is in thelogData.ino file. The order in wich is save is:

1. logTime: time passed since it's turn on
2. Relative altitude.
3. Free fall state: 0 or 1
4. BMP280 temperature
5. Pressure
6. Pitch
7. Roll
8. Yaw
9. X Acceleration
10. Y Acceleration
11. Z Acceleration

For running this project, you will have to download some libraries for arduino :

• SdFat - by Bill Greiman
• MPU6050 - by Korneliusz Jarzebski (improved versionhere)
• BMP280 - by Adafruit (if you use a chinese version you should change the I2C address from 0x77 to 0x76)

TheOBC use the MPU6050 and BMP280 Sensors, a micro SD module and a buzzer for alerts. It also has the capability to activate a servo motor when it dectects free fall.

I hope that the information in this repository is a good starting point for your science and technology projects, If you want to help us developing this, feel free to do it.

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