The ELM327 is a microcontroller-based interpreter that translates OBD-II (On-Board Diagnostics) signals into readable data for diagnostics and vehicle monitoring that can be used on smartphones or PCs via Bluetooth, Wi-Fi, or USB. Compatible with various diagnostic apps, the ELM327 provides real-time data, reads trouble codes, and helps users identify and troubleshoot engine and performance issues efficiently. The assumption is made that you are using an authentic ELM327 as there are many clones/fakes on the market.
- A authentic ELM327 typically has a: Microchip PIC18F25K80 chip (however there are clones of these too)
- A 4.000Mhz crystal oscillator (fakes use 16.00Mhz)
The fake ones do work, but are unable to retrieve all data that might be required for example transmission codes.
Drivers to connect to the ELM327 to Windows, macOS via USB are typically one of these 4: FTDI Chips, Silicon Labs, Prolific or WinChipHead.
