You can connect an ArduSimple GNSS RTK receiver with SurPad 4.2 software using Bluetooth, Serial Port, and TCP Client methods.

Serial Port Connection Method

1. Prepare the Receiver:

• Ensure your ArduSimple receiver is ready and has a serial connection available.

2. Connect via USB OTG:

• Use a USB OTG cable to connect your receiver to the Android device through a serial-to-USB adapter.

• Ensure the connection is secure and the receiver is powered on.

3. Configure SurPad 4.2:

• Open SurPad 4.2.

• Go to the "Device" - "Communication" menu and look for the GNSS receiver setup option.

• Select "Device Manufacturer: Other" and choose "Serial Port" as the communication mode.

• Select the appropriate USB serial port from the list.

• Save the settings and connect.

4. Verify Connection:

• Ensure SurPad 4.2 is receiving data from the receiver. You should see updates in satellite data and positional information.

• You can enter the "Debug" menu to view the NMEA message output from your receiver.

• Place the receiver antenna in an open area with a clear view of the sky to ensure the best possible quality of satellite signal reception.