Arduino ELM327 Emulator

Emulate an ELM327 OBD-II adapter over Bluetooth LE using Arduino UNO R4

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Quick Start

1. Flash emulator.ino to your Arduino UNO R4
2. Device advertises as "ELM327 Emulator"
3. Begin debugging your software

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Features

Feature	Description
ELM327 Protocol Emulation	Simulate command responses
PID Request Simulation	Engine RPM, speed, temperature, etc.
DTC Simulation	Simulate and clear diagnostic trouble codes

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Supported Commands

Command	Description	Response
ATZ	Reset device	ELM327 v2.2
ATSP0	Auto protocol detect	SEARCHING...0
0105	Coolant temperature	Simulated temp data
010C	Engine RPM	Simulated RPM data
010D	Vehicle speed	Simulated speed data
03	Read DTCs	Simulated DTC codes
04	Clear DTCs	OK
0902	Read VIN	Vehicle ID data