Add Simulator Stage 1 with SD card support

[minigithubo]

Simulator Stage 1

Implements a Router Arduino Due program that simulates vehicle
sensor responses based on DBW inputs.

What this does

• Reads throttle, brake, and steering signals from DBW Arduino
• Computes vehicle speed using the throttle-to-speed model
  from Model for speed from throttle.docx
• Tracks vehicle position (X, Y in meters), heading, and speed
• Sends simulated wheel pulse and angle sensor values back to DBW
• Logs CSV data to SD card if available, falls back to Serial

CSV output columns

time_ms, X_m, Y_m, heading_deg, speed_kmh, angle_deg, throttle, brakeOn

Testing

Tested with fixed throttle=150, no steering input.
Vehicle travels north at 25.69 km/h for 50 seconds (~351m).
Serial output confirmed correct speed model behavior.

Hardware required for SD card logging

• 3 jumpers in parallel on JP2
• Wire from Sensor Hub Pin 35 to TP12 (router pin D20)

output csv file

siumlaotr.csv