OBD 2 Interface

[dope40]

Hi , so i am looking at ELM327 and was wondering if its possible to communicate to it using PIC and displaying it on a 16x2 LCD ( for example RPM and VSS ). I know how to display it to the LCD , but i dont know how to send the PID to the ELM and read it . I am new to the MCU world so pls be patient .Thanks in advance.

[Pedram]

ELM317 is a rebranded PIC it self.


it is possible. ELM317 uses AT Commends over UART. so any MCU with UART can communicate with it.

[Stonent]

Another option is Bluetooth. Get a BT based dongle and a BT based device for the microcontroller.

If you want to do just parts obd solutions sells the stn1110 based on a pic24 which is command compatible with the elm327 and has more features.

For either one, you will also need an mcp2551 CAN controller or similar.