jeffjewett27/tutagsat2021

TUTagSat2021

Taylor University's TagSat2021 code in partnership with NSL. Based off TUSatellite7. Developed in March, 2021.

Primary Contributors

• Jonathon Fritsch (NSL Engineering Technician)
• Jeff Jewett (Lead Software Developer)
• Steven Dalcher (Taylor)
• Stefan Brandle (Taylor)
• Matt Orvis (NSL)

Hardware

• NearSpace Education ThinSat Sensor Board v4
  • LSM9DS1TR 9-axis IMU (acceleration, gyroscope, magnetic field)
  • Teviso BG51 Radiation (Cosmic Particle/Gamma Detector)
  • Three TMP36 temperature sensors
  • Two UV Light Sensors: GUVA-S12SD UVA (240nm ~ 370nm) and GUVC-S10GD UVC (220nm ~ 280nm)
  • SFH3310 Phototransistor
  • TSL235R-LF Light to Frequency Phototransistor
  • M24512 EEPROM
  • Eight MCP3208 analog inputs on an A/D converter
• RGB color detector

Sensor Readings

• IMU (i2c)
  • acceleration: 3-axis g's Vector3
  • gyroscope: 3-axis deg/s Vector3
  • magnetometer: 3-axis Gauss Vector3
• EEPROM (i2c)
  • 64KB = 512Kb
• UVA (analog)
  • units: Amps per Watts/cm2
• UVC (analog)
  • units: Amps per Watts/cm2
• Temperature (analog)
  • 10 mV/°C scale factor
• Radiation (pulse count)
  • 5 cpm/µSv/h
• Light to Frequency (pulse count)

Utilities

• .linux-side.sh is a bash script to update the project file (TUTagSat2021.side)

• .powershell-side.ps1 is a powershell script to update the project file (TUTagSat2021.side)

• .side-compile.txt contains information about the SimpleIDE compiler options (leave as default)

• Vector3.h is a 3-vector of floats

• Packet.h contains header info + 32 bytes of data for a packet

• PacketQueue.h is a queue data structure which holds packets

• DataConversion.h contains functions to switch between 32-bit and 16-bit floats (at cost of precision)

Packet List

• IMU (float32 values):
  • accx [4x8]: 0x40
  • accy [4x8]: 0x41
  • accz [4x8]: 0x42
  • gyrox [4x8]: 0x43
  • gyroy [4x8]: 0x44
  • gyroz [4x8]: 0x45
  • magx [4x8]: 0x46
  • magy [4x8]: 0x47
  • magz [4x8]: 0x48
• Analog (uint16_t values):
  • uva [4x8]: 0x11
  • uvc [4x8]: 0x12
  • temp1 [4x8]: 0x13
  • temp2 [4x8]: 0x14
  • temp3 [4x8]: 0x15
• PulseCount (uint16_t):
  • ltf [2x16]: 0x16
  • rad [1x32]: 0x17