CanisMajorisAZ / firmware-2020

Canis Majoris CanSat2020 firmware and electronics

Canis Majoris Firmware

Main Tasks

• Camera

  • Writing driver code for Camera
  • Taking photos every 2 seconds (at least 5 photos, 480x480p)
  • Storing photos

• GPS

  • Writing driver code for GPS module
  • getting longitude and latitude information

• Data transmission

  • Writing driver code for XBEE S1 (probably)
  • Sending telemetric data each second
    • sending photos every 2 seconds

• Telemetric information

  • Battery voltage measurement IC [?]
  • Driver for BMP (180 or 280)
  • Configuring Real Time Clock [maybe use UTC time from GPS?]
  • Measuring number of cycles of propeller [?]

• Main Driver Code

  • Configuring FREERTOS
  • 3 main threads:
    • data acquisition (telemetry info)
    • data processing
    • data sending
  • additional threads:
    • satellite balance
    • camera handler

List of parts

• STM32F103C8T6 (microcontroller)
• XBEE S1 (for radiotransmission)
• MPU 6050 (gyrosensor)
• BMP280 (pressure sensor for altitude measurement)

---

• Soldering wire
• Battery
• GPS module
• XBEE antenna
• Brushless DC motor *
• ESC - electronic speed controller *
• SD card
• SD card slot
• Camera
• Propeller
• ...

* = maybe instead use passive landing

21.01.2020