OBD-II Arduino Mega2560

[justpierre35]

Hi all,

I'm a newbie and I'm having issue to connect my arduino mega2560 to the OBD-II adapter..

Code: Select all

#ifdef ARDUINO_AVR_UNO
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 10);
#else
#define mySerial Serial
#endif

I connect from the OBD adapter cables :
RED -> VCC (5V Arduino mega2560)
BLACK -> GND (GND Arduino mega2560)
WHITE -> 2 (digital Arduino mega2560)
GREEN -> 10 (digital Arduino mega2560)

Do I need to connect the connector in the car just for testing the connection with the OBD adapter?

Thanks in advance,
Pierre

[stanley]

White to Tx1 and green to Rx1.