# OBD Sim Pro - Virtual ELM327 Bluetooth ECU Simulator

Turn your Android device into a high-performance **Virtual OBD-II / ELM327 Bluetooth ECU Simulator**!

Whether you are an automotive software developer, diagnostic technician, tuner, or car enthusiast, **OBD Sim Pro** lets you test and debug OBD-II scanner apps without needing a physical vehicle or expensive hardware dongles.

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### 🚀 Dual-Mode Wireless Connectivity
Broadcast real-time automotive sensor data wirelessly using both standard protocols:
* **Bluetooth Classic (SPP - Serial Port Profile):** Seamlessly pairs with apps like **Torque Pro**, **DashCommand**, and **OBD Fusion**.
* **Bluetooth Low Energy (BLE 4.0+ GATT):** Direct plug-and-play simulation for **Car Scanner ELM OBD2** (Android & iOS).
* **Raw Serial Terminal:** Compatible with **Serial Bluetooth Terminal** for raw AT command execution and testing.

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### ⚡ Full OBD-II Modes & Protocol Emulation
* **Mode 01 (Live Powertrain Telemetry):** Real-time RPM, Vehicle Speed, Engine Coolant Temp (ECT), Throttle Position, Intake Air Temp, Mass Airflow (MAF), Fuel Tank Level, Boost Pressure, and Battery Voltage.
* **Mode 03 & 07 (Diagnostic Trouble Codes):** Inject confirmed and pending DTC fault codes (such as `P0300` Random Misfire, `P0171` System Too Lean, `P0420` Catalyst Efficiency) and toggle the **Check Engine Light (MIL)**.
* **Mode 04 (Clear DTCs):** Emulate diagnostic code clearing and MIL lamp reset commands in real time.
* **Mode 09 (Vehicle Identification):** Broadcasts 17-character VINs and ECU calibration IDs.
* **ELM327 AT Command Set:** Full support for `ATZ`, `ATE0/1`, `ATH0/1`, `ATL0/1`, `ATSP0`, `ATDP`, `ATRV`, and standard ISO 15765-4 CAN auto-negotiation.

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### 🏎️ Vehicle Profiles & Dynamic Drive Engine
* **Multiple Preset Vehicles:** Switch on the fly between a **Turbocharged Sport Coupe**, **Heavy-Duty Turbo Diesel Truck**, **Hybrid Commuter**, and a fully customizable **Custom Dyno Tune**.
* **Interactive HUD Dashboard:** Control throttle, gear shifts, braking, engine load, and RPM via an intuitive dynamic driving simulator.
* **Fault Injection Engine:** Simulate real-world sensor glitches, coolant overheating, boost leaks, and misfires to test your diagnostic alerts and fail-safes.

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### 📊 Inspection Tools & Local Trip Logs
* **Live Terminal Inspector:** Inspect incoming hex queries and ECU responses with sub-millisecond timestamps.
* **Trip Recording:** Save and analyze simulation runs locally on your device storage.
* **100% Offline & Private:** Zero account creation, zero analytics tracking, and zero remote data transmission.

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### 🛠️ How to Get Started
1. Launch **OBD Sim Pro** on your Android device and tap **Start Simulator**.
2. On your second phone or test tablet, pair with this device via Bluetooth or scan for **OBDII-BLE**.
3. Open your favorite diagnostic tool (Torque Pro, Car Scanner, etc.), select Bluetooth connection, and start reading live telemetry!

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**Developed with precision by DailyCommit**
*For developer support, inquiries, or feature requests, contact: hello@dailycommit.dev*