Configuring tcpGPS for Android to work with EMLID Reach RS3

This tutorial shows how to configure TcpGPS to work with EMLID Reach RS3 GNSS receivers in RTK mode, sending RTK corrections over the Bluetooth link.

Note: the screenshots for steps 6 to 9 (configuring the NMEA messages in EMLID Flow) were not available in the source file and could not be included.

Overview

Aplitop TcpGPS is a mobile app for Android devices that allows you to collect and stake out data in the field.

To integrate your Reach GNSS receiver with the Aplitop TcpGPS app, you'll need the following:

• EMLID Reach RS3 GNSS receiver with firmware version 31.8

• A device with Android OS v7.0+

• EMLID Flow 9.8+

• Aplitop TcpGPS v2.6+

Workflow

1. Open EMLID Flow and connect with the Reach GNSS receiver using WiFi

1. Go to Correction input and select Bluetooth

1. Go back, enter Settings and tap the IMU option

1. Tap the TURN ON IMU button

1. Wait until the Waiting for FIX message appears on the State panel

1. Go to the main menu and select Settings > Position Streaming 1

2. Select Bluetooth and tap the edit button

3. Select NMEA as Format

4. Tap NMEA settings, select the GGA, GSA, GST, EBP and ETC messages with 5Hz frequency and the GSV message with 0.5Hz frequency. Then tap the Apply button

5. Close EMLID Flow and open Aplitop TcpGPS

1. Tap the receiver icon next to Device type. On the screen that opens, select the following:

   • GNSS External Receiver (Bluetooth) for Device type

   • EMLID for Brand

   • Reach RS3 for Model

1. Tap the Receiver button and select the Bluetooth device. If the receiver is not in the list, tap the Search button

1. Tap the Connect button and wait for the Reach GNSS receiver to finish its configuration

1. Tap the forward arrow button and, on the Working mode screen that opens, tap the Rover button

1. Configure NTRIP to send RTK corrections through Bluetooth

1. To set up the NTRIP server, tap the three-dot button and specify the following parameters:

   • Name

   • IP

   • Port

   • User name

   • Password

   • Mountpoint

   After that, tap the OK button

1. Tap the Connect button and check that the number of bytes sent and received increases

1. Go back to the Working mode screen and tap the Tilt button

1. Enter the Antenna height and tap the Activate tilt button

1. Follow the instructions until the Compensating status is shown

1. Tap the forward arrow button and select or create a project

1. Tap the survey button and start working with TcpGPS for Android and the Reach RS3 GNSS receiver

Related page

For more detail on the tilt compensator setup, see How to configure EMLID Flow to use the tilt compensator of Reach RX2, RS3, RS4, and RS4 PRO receivers?