Xenia1-flight-Computer

Requirements/Imports

To pip install all the necessary imports run $ pip install -r requirements.txt Please Update requirements.txt with new imports if you add any

Style

• Class names: starting with Pascal Case (capital then camel)
• method: lower snake
• vars: lower snake
• private methods: __ for private methods

Please document your code in the following format:

for classes:

  """
  Description of class

  ...

  Attributes
  ----------
  an_attribute(variable)
    Description:
      write description

  Methods
  -------
    Description:
      write description
     Parm:
      parm_name: write point of parameter

  """

Setup and Installation

This system is designed to run on a raspberry pi zero W. To set up clone the repository and run $ pip install -r requirements.txt, this will install all necessary dependencies.

Design

The flight computer has two purposes: to store, and to simulate. The system is designed to run on a raspberry pi 0 W running rasbian (Ubuntu ~10). Connected to the pi are multiple senors and devices. The sensor suite contains a adafruit BME280, adafruit LSM..., adafruit Adx..., adafruit ADS... all of which are connected to the pi using 1 I2C bus. A mirco stepper driver is used to control the airbrakes assembly's motor and feedback is given through a potentiometer which is fed into the analog to digital converter. A buzzer is connected to a single GPIO pin on the pi and give auditable feedback to the user. All other electrical components connected to the flight computer can be found in the KiCAD schematic in the source directory.

Due to the nature of embedded systems

Beep codes

File structure

The Project is broken into two folders a source folder (src) and a sub sensors folders

> Xenia1-flight-computer
  > drag_data 
    > cda_no_airbrakes.csv

  > src
    > airbrakes.py
    > suborbit.py
    > rehearsal.py
    > main.py
    > rocketData.py
    > flight_computer.py

  > sensors
    > adx.py
    > bme.py
    > hx711.py
    > lsm.py

1. src/airbrakes.py

   Suborbit

   Computes a the next value to set the airbrakes to position to. Also provides a simple interface for controlling the hardware that Airbrakes uses to deploy the brakes. It does this through a kalman filter algorithm. Please look at the kalman filter algorithm connected to the issue X1-AV-6

2. src/suboribit.py

3. src/gpioReader.py

   This file reads all the data from the sensor and updates rocketData.

4. src/main.py

   Runs flight computer class

5. src/rocketData.py

   This class holds all the data of the rocket and has functions to manipulate the data.

Flow of the Program