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For LEONIRD, we are using the PyCubed Hardware + Software stack.


The central board's schematics can be found here: https://github.com/pycubed/hardware.

This includes:

  • 32-bit ARM M4 @ 120 MHz microprocessor
  • Flash memory + Micro SD card slot
  • Watch dog timer (automatically resets system in case of error)
  • IMU
  • Radio + 5V buck converter for radio
  • 4.5V-18V → 3.3V buck converter
  • Li-ion battery charger (compatible with solar)
  • Burn wire (cool mechanism that keeps the antenna "folded" until the satellite deploys, upon which it springs out)
  • Power monitor


The board can be controlled using the PyCubed software, found here: https://github.com/pycubed/software/blob/master/mainboard-v05/lib/pycubed.py

The GitHub repo pretty much only has code to initialize the board and gives the user free reign to design the flight software.



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