Arduino Mega Rocket Flight Computer (Telemetry Logger)

This project simulates a basic rocket flight computer using an Arduino Mega in the Wokwi simulator. It tracks the rocket's flight state (pre-launch, launching, apogee, recovery, landed), logs telemetry data to a virtual SD card, and displays live information on an LCD. Altitude is simulated using a slide potentiometer.

Features ✨

• Flight State Machine: Tracks the rocket's progress through different flight phases.
• Virtual Altimeter: Uses a slide potentiometer to simulate altitude readings (0-10,000m).
• Launch Detection: Uses the MPU6050 accelerometer's Z-axis reading to detect liftoff G-force.
• Apogee Detection: Detects the peak altitude by monitoring when the simulated altitude starts decreasing.
• Parachute Deployment Signal: Activates an LED at apogee to simulate parachute deployment.
• SD Card Logging: Records timestamp, flight state, current altitude, max altitude, and Z-axis acceleration to a LOG.TXT file.
• LCD Display: Shows real-time flight state, altitude, max altitude, and acceleration.
• Personalized Welcome Message: Greets "Umair" upon startup.

Hardware Simulated (Wokwi) 🛠️

• Arduino Mega 2560
• MPU6050 Accelerometer + Gyroscope (I2C)
• LCD 20x4 (I2C)
• MicroSD Card Module (SPI)
• Slide Potentiometer (Analog Input A0)
• Red LED
• 220 Ohm Resistor

Setup ⚙️

1. Wiring: Connect the components to the Arduino Mega according to the sketch.ino comments or the diagram.json file.
   • I2C: LCD & MPU6050 share SDA (Pin 20) and SCL (Pin 21).
   • SPI: SD Card uses MOSI (Pin 51), MISO (Pin 50), SCK (Pin 52), and CS (Pin 53).
   • Altimeter: Potentiometer SIG pin connects to A0.
   • Parachute LED: LED Anode connects to Pin 13, Cathode through resistor to GND.
2. Libraries: Create a libraries.txt file in your Wokwi project and add the following lines:

   Adafruit MPU6050
   Adafruit Unified Sensor
   LiquidCrystal_I2C
   SD
   

3. Code: Copy the provided sketch.ino code into the Wokwi editor.

How to Run the Simulation 🚀

1. Click the "Start Simulation" (►) button.
2. The LCD will display the welcome message for 3 seconds, then "Ready for Launch."
3. Launch: Click the MPU6050 sensor and drag the accelZ slider above 1.53g (value > 15 m/s²). The state will change to LAUNCHING.
4. Ascend: Click the Slide Potentiometer and drag the slider upwards. Watch the altitude increase on the LCD.
5. Apogee: Drag the potentiometer slider downwards slightly. The state will briefly show APOGEE, the LED will turn ON, and then the state will change to RECOVERY. The "APOGEE" state is held for 2 seconds.
6. Land: Drag the potentiometer slider back to the bottom (0). The state will change to LANDED, and the LED will turn OFF.
7. Review Data: Go to the "SD Card" tab in Wokwi (next to sketch.ino) to view or download the LOG.TXT flight log.

Notes

• This simulation uses a potentiometer for altitude, not a real pressure sensor.
• The launch detection and apogee detection logic are simplified for the simulation environment.