UART ports connected to the RS232 serial ports (GPS-RTK Dead Reckoning Breakout)

GPS/GNSS Development Boards
1

Hi, I recently bought a GPS-RTK Dead Reckoning Breakout - ZED-F9R (Qwiic) (GPS-16344) board. I would like to use the two UART ports connected to the RS232 serial ports of a Windows PC. Should I put an RS232 to TTL card between the GPS card and the PC or can I connect TX, RX and GND directly to pins 2,3 and 5 of the BD-9 pin?

Could a module based on the MAX3232 be compatible?

Also, the jumper labelled SPI seems to be open.

The UART is therefore enabled by default?

Can anyone help me?

Thanks

Renato

2

You definitely need the MAX3232 to convert TTL to RS232. Don’t connect the GPS directly to a serial port, it will likely damage it. Serial should be enabled by default on your device, a jumper on the board changes the serial pins to SPI. Check sparkuns hookup guide for more information. :smiley:

3

Thank you very much Yellow Dog, for your response.

I tested the small card using the Ntrip correction and was impressed with the accuracy. In less than optimal coverage conditions I achieved 1.7 cm of accuracy using U-Center. However, now I need to transfer the cordinates to the software that handles the navigation and U-Center won’t let me share the USB and RTKlib won’t recognize the USB.

Renato