simpleRTK2Blite with Arduino

Q&A forumCategory: QuestionssimpleRTK2Blite with Arduino
greg.hauck asked 3 weeks ago
Hi,
I just received my SimpleRTK2Blite.  Appears to work fine with u-center through the USB Xbee card in bottom connector.  I also tested it with a NTRIP Master plugged into the top connector and was able to get a RTK Fixed solution.  However, I am not planning to use the USB Xbee card.   Using your document, I connected an Arduino Nano 33 BLE and I can not make serial communications via UART1 (bottom Xbee connectior). I hooked up using the documentation on your site.  That is, 3.3V, RX-TX crossed, and two GNDs.  I believe it is powered correctly because after connecting the antenna, the GPS Fix led starts blinking.  I am trying to connect via at 115200 first, then I drop down to 38400 and try again.  I know u-center worked with 38400 since I was able to get my satellite histograms and other things from the app.  Am I missing a connection?  What about the N/C on the documentation?  Do I need to do anything with that?
Appreciate any help.
Thanks,
Greg
Ardusimple
Staff replied 3 weeks ago

Dear greg,
Actually 3.3V, GND, TX and RX are enough. No special pins needed.

Typical things to check:
1. Cables are well connected.
2. Cables are not too long. Long cables can add extra resistance and interference
3. Crossed TX/RX
4. Wrong voltage level (arduino nano at 1.8V)

greg.hauck
replied 3 weeks ago

Got it. The voltage pin used form the Nano was wrong. Used correct 3.3V pin so that fixed the voltage levels and the NTRIP Master powered up and I achieved RTK Fixed. However, please double check the hookup guide. I believe the RX and TX are swapped in the picture. The simpleRTK2B works fine with the documentation.
Note the less I am up and running fine. Thank you very much for the help.

Ardusimple
Staff replied 3 weeks ago

Hi greg,
You are right, the image is swapped in the hookup guide. I asked our webmaster to update it. thanks and we are happy to read that now it’s working!

1 Answers
greg.hauck answered 3 weeks ago
The voltage pin used form the Nano was wrong. Used correct 3.3V pin so that fixed the voltage levels and the NTRIP Master powered up and I achieved RTK Fixed.