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Hk/Holybro 328p and Ublox Neo6 i2c gps.

Posted: Mon Jun 24, 2013 6:44 pm
by paw1985
Hi guys, I need Help.

I just recieved my Crius i2c and crius ublox neo6 module today.

I soldered the pins on to the Hk board and connected the gps module. ( Switched the wires so it didn't get i2c errors)

The GPS blinks green constant, and the i2c board flashes red every 1 sec.

I've been searching and reading for a couple of hours now, but still no luck finding a noob guide.

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Config file: http://cleanupload.com/confgps.txt

I'm not getting any signal in multiwii, or anything in Ublox U-Center.

I'm a little lost, i can't seem to find a guide that describes what i need to do, not one i understand.

So far i think i need to flash the ic2 board, but i cant figure out how ? i can't connect anything to it, and don't think it possible through the Hk 328p board.

Any help will be appreciated.

Thanks.

Re: Hk/Holybro 328p and Ublox Neo6 i2c gps.

Posted: Sat Jun 29, 2013 1:21 pm
by chris_kmn
I have the same setup - and the same problems :-(

But at least I got ublox to work with it. How did u connect ublox to the gps module ? I connected rx to rx of an arduino and same with tx. so no crossover of tx and rx. ublox set to autobaud and it got connected to the gps module.

But until now I never got the 3 - 1 blinking LED on the I2C module. Just allways the 1sec - 1 sec. I almost tried every combination of baud rates and protocol configs :?: :?: :?: :?: :?:

Re: Hk/Holybro 328p and Ublox Neo6 i2c gps.

Posted: Sat Jun 29, 2013 2:37 pm
by chris_kmn
FINALLY............ I got it work. Had to tweak some configs at the ublox.

If u need help gibe me a sign.

Re: Hk/Holybro 328p and Ublox Neo6 i2c gps.

Posted: Tue Jul 02, 2013 8:11 pm
by bienias
Please share some info. I have the holybro 328p and ublox neo6 gps CN-06 v2 + i2C-nav from Crius and I'll probably have some problems.
Regards.

Re: Hk/Holybro 328p and Ublox Neo6 i2c gps.

Posted: Wed Jul 03, 2013 10:24 am
by chris_kmn
Mainly I used the firmware from this link:

http://www.rcgroups.com/forums/showthread.php?t=1724694

Before I uploaded the firmware I flashed an empty sketch to erease the I2C module. And have in mind that you have to disconnect the I2C module from the MW controller before you are flashing the MWC or using the GUI (otherwise you are flashing both controlers or mismatching somethingin I2C GPS).

But the u-blox config file somehow is not sufficent. There are some messages missing.

You need to enable these UBX messages POSLLH, SOL, STATUS and VELNED. All other messages have to be deactivated

If you open the ublox config tool and connect the GPS module (not the I2C board) you can upload the config file. After that open the "Messages" window and check which messages are sent out. If some messages are missing, you can add then in the "View Configuration" window. Don't forget to push the "send" button in the window.

To store the changes in the EEPROM go to the "CFG (Configuration)", select #2 "I2C-EEPROM", check "Save current configuration" and again press "send" button.

I'll attach my ublox config to this message and the config.h for the I2C Module sketch.

BUT one major issue I experienced was:

- When I connected the GPS module to my Arduino (or a FTDI USB -> RS232/UART) I had to connect TX with TX and RX with RX
- When I connected the GPS module to the I2C Board I had to connect TX with RX and RX with TX !!!!