RTKcamera - UM980 chipset

The UM980 chipset is Unicore's new-generation proprietary high-precision RTK positioning module. It comes preconfigured, but we recommend checking:

1) Which NMEA messages are outputted and

2) at which rate

Then you won't have any trouble connection RTKcamera App with this chipset via USB directly, a USB serial or Bluetooth connection.

For this tutorial, we are using GNSS.store UM980 module. Small formfactor, a USB-C and SMA antenna. Everything we need:

Produkt Link: https://gnss.store/unicore-gnss-modules/248-elt0223.html

1) CONFIGURE the UM980 CHIP

1. To configure the chip, we will need to install UPRECISE on a computer.
2. After this connect your Chip with computer using a USB cable.
3. Start UPRECISE, choose the COM port and click connect
4. Check the "Output Data Stream" and note which message are outputted.
5. RTKcamera requires:
   GNRMC .... the "recommended Minimum Configuration" message
   GNGGA ... the "Global Positioning System Fix Data" message
   GNGST ...  provide information on "Lat/Lonsigma error, in meters" so accuracy information in [m]
6. If one of these message are missing, please activate them by
   1. Opening Receiver Configurations
   2.  and use "Message configuration" to activate them
   3. Do not forget to SAVE and ENTER. 
7. Check directly in Data Stream if changes affected the output information.

Which update rate?

Usually, so while walking 5Hz is enough for recording and geotagging images. If you are driving faster, like on a quad or even a car, update to 10Hz or 20Hz. Please note, that this might overload the smartphone and the update rate and overall Android system stability is negatively influenced.