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Magister · 08-21-2008, 11:37 AM

ELM327 CAN part:

How can it be so simple, I took the reference design from the PDF and removed the non CAN stuff, here is the result:

The chip need more power than what the 78L05 from the duino (100mA) can provide so I will replace it with a 7805 (1A).
Basically there is the ELM327, the MCP2551, a crystal, 3 resistors, 5 capacitors.

This will be my starting point. Note that I will not use a MAX232 or transistors to convert the rx/tx to RS232 level as I will use a direct connect to the pin 0 and 1 of the Arduino, it should work, isn't it?

08-21-2008, 11:37 AM	#171 (permalink)
Magister OBDuino coder Join Date: Jun 2008 Location: Montréal, QC Posts: 212 Titine - '13 Hyundai Sonata Hybrid Thanks: 3 Thanked 10 Times in 8 Posts	ELM327 CAN part: How can it be so simple, I took the reference design from the PDF and removed the non CAN stuff, here is the result: The chip need more power than what the 78L05 from the duino (100mA) can provide so I will replace it with a 7805 (1A). Basically there is the ELM327, the MCP2551, a crystal, 3 resistors, 5 capacitors. This will be my starting point. Note that I will not use a MAX232 or transistors to convert the rx/tx to RS232 level as I will use a direct connect to the pin 0 and 1 of the Arduino, it should work, isn't it? __________________ 2013 Hyundai Sonata Hybrid Last edited by Magister; 09-05-2008 at 04:05 PM..