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For a new project, I am developing a RTK system. Here, I have a device named Base which has to transmit its NMEA data to another device termed as Rover. For communication purpose I have used Xbee S2C Pro. The data received by Xbee of Base (termed as A) is being transmitted to Xbee of Rover(termed as B). That is communication from A to B takes place.

Now, I want to transmit the data from Rover to another device which is a computer. Also here I have used a Xbee (termed as C) for communication.

Xbee A = Router 1; Xbee B = Coordinator; Xbee C = Router 2; Xbee A sends data to Xbee B and Xbee B sends data to Xbee A

The NMEA strings given to the Xbee A are as shown : enter image description here

The data received on Xbee B is as shown : enter image description here

No data is being received in Xbee C : enter image description here

However, when I give data to Xbee B through the console window, it gets received by Xbee C enter image description here

Need a help for this scenario.

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  • \$\begingroup\$ So, Xbee A = Base = Router 1, Xbee B = Rover = Coordinator, Xbee C = Router 2 = Computer? Do you have a specific question? \$\endgroup\$ – Elliot Alderson Aug 8 '19 at 17:15
  • \$\begingroup\$ Communication between Xbee A and B is good. But not being able communicate between Xbee B and Xbee C \$\endgroup\$ – NITISH NAYAK Aug 10 '19 at 18:34
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If you don't have a specific protocol requirement here is a suggestion:

  1. By using XCTU app from Digi, flash 802.15.4 firmware into all xbee modules.
  2. Set NODE A as coordinator and others as ENDPOINT.
  3. Set up a mesh network by channel settings.
  4. Now set the NMEA source's (which is NODE A) destination address to broadcast.

When the system starts to work, both NODE B and NODE C will receive the NMEA data sent from NODE A.

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