Forum >Questions about the kit and new I2C version of OBD-II adapter
Questions about the kit and new I2C version of OBD-II adapter
Khaos 2013-10-15 14:12:56 6664 Views4 Replies Hi Stanley,
I just received the kit#3, and after eventually figuring out how to load the MEGA LOGGER code (dated 05 Oct 2013) I actually got the unit to power up and display something.
Just a few questions:
After struggling for such a long time and reading all this info, it seems these units are very temperamental.
This is very concerning as I was under the impression that these units are fairly plug and play (with the software loaded) - but after such a large order, it seems I might have bought some lemons :-\
I hope this is not the case.
The intention is to use them on a range of the Subaru vehicles, which apparently predominantly uses CAN. I just want the units to display basic ECU parameters, so would imagine your sketch would work perfectly, but NOT.
The unit just starts up and says:
No SD Card - (and one is inserted)
No OBD (and its plugged in)
No GPS (GPS 5Hz Module is plugged into UART2 - tried both ways)
No dfrobot
I have reset it, unplugged, etc... never got it to register once.
This was on a Subaru Outback 2009 model.
Please help.
I just received the kit#3, and after eventually figuring out how to load the MEGA LOGGER code (dated 05 Oct 2013) I actually got the unit to power up and display something.
Just a few questions:
After struggling for such a long time and reading all this info, it seems these units are very temperamental.
This is very concerning as I was under the impression that these units are fairly plug and play (with the software loaded) - but after such a large order, it seems I might have bought some lemons :-\
I hope this is not the case.
The intention is to use them on a range of the Subaru vehicles, which apparently predominantly uses CAN. I just want the units to display basic ECU parameters, so would imagine your sketch would work perfectly, but NOT.
The unit just starts up and says:
No SD Card - (and one is inserted)
No OBD (and its plugged in)
No GPS (GPS 5Hz Module is plugged into UART2 - tried both ways)
No dfrobot
I have reset it, unplugged, etc... never got it to register once.
This was on a Subaru Outback 2009 model.
Please help.
2013-10-18 11:02:15 WORKING! 8) 8)
My obd.h library file was incorrect... changed it and worked.
also just edited the following in the code:
from:
class COBDLogger : public COBD, public CDataLogger
to:
class COBDLogger : public COBDI2C, public CDataLogger
...
now to figure out how to scroll through the different PID's on the screen :o Khaos
My obd.h library file was incorrect... changed it and worked.
also just edited the following in the code:
from:
class COBDLogger : public COBD, public CDataLogger
to:
class COBDLogger : public COBDI2C, public CDataLogger
...
now to figure out how to scroll through the different PID's on the screen :o
Khaos 2013-10-17 21:50:29 Awesome Stanley,
I figured out that I should be using the I2C plugs, but didn't change the code. I'll change it and check. Thanks man!!
Will provide feedback soon.
UPDATE:
I did a "ctrl F" and replaced COBD with COBDI2C. When compiling the code it gives a whole string of errors now.
If I change all the COBDI2C except the one below (public COBD) then the code compiles, however, it still does not detect the OBD of the car - which means to me that this is where the issue is. It is probably still referencing the same definitions as COBD instead of COBDI2C.
I am not sure what the error is:
This is the section in the code I am referring to:
class COBDI2CLogger : public COBD, public CDataLogger
{
public:
COBDI2CLogger():state(0) {}
void setup() Khaos
I figured out that I should be using the I2C plugs, but didn't change the code. I'll change it and check. Thanks man!!
Will provide feedback soon.
UPDATE:
I did a "ctrl F" and replaced COBD with COBDI2C. When compiling the code it gives a whole string of errors now.
If I change all the COBDI2C except the one below (public COBD) then the code compiles, however, it still does not detect the OBD of the car - which means to me that this is where the issue is. It is probably still referencing the same definitions as COBD instead of COBDI2C.
I am not sure what the error is:
This is the section in the code I am referring to:
class COBDI2CLogger : public COBD, public CDataLogger
{
public:
COBDI2CLogger():state(0) {}
void setup()
Khaos 2013-10-16 10:22:59 UPDATE:
I Loaded the software onto one of my Kit#2's
With no GPS, but plugged the obd connector into the Top and bottom connector on the I/O shield.
since the connector for this kit is keyed, the blue and yellow wire is sure to connect to the SDA/SCL pins.
in both instances at least now it gives a green tick for dfrobot, but still red cross for OBD :(
I assume these obd plugs are the "newer I2C ones" since all of the cables you sent do NOT have a second plug with the green & white wire as per the images on your website (arduinodev)
This then means that the plug has to be plugged into IIC (for kit3) and I2C (for Kit2)
Anxiously awaiting any further guidance / advise... Khaos
I Loaded the software onto one of my Kit#2's
With no GPS, but plugged the obd connector into the Top and bottom connector on the I/O shield.
since the connector for this kit is keyed, the blue and yellow wire is sure to connect to the SDA/SCL pins.
in both instances at least now it gives a green tick for dfrobot, but still red cross for OBD :(
I assume these obd plugs are the "newer I2C ones" since all of the cables you sent do NOT have a second plug with the green & white wire as per the images on your website (arduinodev)
This then means that the plug has to be plugged into IIC (for kit3) and I2C (for Kit2)
Anxiously awaiting any further guidance / advise...
Khaos 2013-10-16 08:18:03 Hi Stanley,
Things to check:
1. make sure green line goes to SDA and white line goes to SCL
I'm sorry, I don't know where to look as I cant find any green line???
2. for the SD issue, make sure you follow the note on bottom of this page page
I checked the file mentioned (Sd2Card.h) and found the line mentioned already UNcommented.
Copied straight from the file:
"
[i]/**
* Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
* Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
*
* MEGA_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
* on Mega Arduinos. Software SPI works well with GPS Shield V1.1
* but many SD cards will fail with GPS Shield V1.0.
*/
#define MEGA_SOFT_SPI 1
//------------------------------------------------------------------------------
#if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
#define SOFTWARE_SPI
#endif // MEGA_SOFT_SPI
//------------------------------------------------------------------------------
// SPI pin definitions
//
#ifndef SOFTWARE_SPI
"[/i]
3. in the sketch, look up for COBDI2C and change it to COBD
There are no COBDI2C references ... only COBD. so it seems the sketch is already edited accordingly.
I rotated the GPS plug compared to the pic below and I now get : GPS --
Khaos
Things to check:
1. make sure green line goes to SDA and white line goes to SCL
I'm sorry, I don't know where to look as I cant find any green line???
2. for the SD issue, make sure you follow the note on bottom of this page page
I checked the file mentioned (Sd2Card.h) and found the line mentioned already UNcommented.
Copied straight from the file:
"
[i]/**
* Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
* Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
*
* MEGA_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
* on Mega Arduinos. Software SPI works well with GPS Shield V1.1
* but many SD cards will fail with GPS Shield V1.0.
*/
#define MEGA_SOFT_SPI 1
//------------------------------------------------------------------------------
#if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
#define SOFTWARE_SPI
#endif // MEGA_SOFT_SPI
//------------------------------------------------------------------------------
// SPI pin definitions
//
#ifndef SOFTWARE_SPI
"[/i]
3. in the sketch, look up for COBDI2C and change it to COBD
There are no COBDI2C references ... only COBD. so it seems the sketch is already edited accordingly.
I rotated the GPS plug compared to the pic below and I now get : GPS --
Khaos 