Cansat Flight Computer

This repository contains the firmware for a CanSat flight computer built using an ESP32. It handles sensor readings, SD card logging, GPS data, LoRa telemetry, and flight-state detection.

Features

• Reads data from:
  • BME680 (pressure, temperature, gas)
  • SHT41 (humidity and temperature)
  • ICM-20948 IMU (accel, gyro, mag)
  • Ublox GPS module
• Logs all data to SD card in CSV format
• Sends live telemetry using LoRa
• OLED display for debugging
• Flight state machine:
  • Pre-flight
  • Ascent
  • Descent
  • Landing

Hardware Required

• ESP32 Dev Module
• BME680
• SHT41
• ICM-20948 IMU
• Ublox GPS
• LoRa SX1276/78
• SD card module
• OLED (SSD1306)

How to Use

1. Open the .ino file in Arduino IDE or PlatformIO.
2. Install required libraries:
   • Adafruit BME680
   • SparkFun ICM-20948
   • TinyGPS++
   • LoRa
   • Adafruit SSD1306
3. Select ESP32 Dev Module.
4. Upload the code.
5. Insert SD card and power on the device.

CSV Log Format

time, state, altitude, pressure, temperature, voltage, gps_lat, gps_lon, gps_alt, accel_x, accel_y, accel_z, gyro_x, gyro_y, gyro_z, humidity, gas_resistance