Wednesday, 16 October 2013 21:04

Terminal Node Controller for the Raspberry Pi (TNC-Pi)

TNC-Pi is a terminal node controller device, GPIO add-on board used by amateur radio operators to participate in AX.25 packet radio networks.

TNC-Pi is a special version of TNC-X designed to interface directly with the Raspberry Pi computer. It can connect to the Pi either via the Pi's serial port or via the I2C protocol. In the latter case, a single Pi can support multiple TNC-Pi's at the same time, since each TNC-Pi can be given a unique I2C address.


The TNC-Pi features a 9 pin D-Sub port and GPIO through port allowing TNC-Pis to be stacked.


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Last modified on Saturday, 30 November 2013 09:55

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  • Comment Link Roboberry Thursday, 05 October 2017 20:27 posted by Roboberry

    Hi Berni

    You can buy it direct through the link at the bottom of the article. Scroll to the bottom of the page that comes up.

  • Comment Link Bernie Thursday, 05 October 2017 12:16 posted by Bernie

    Where do I purchase a TNC PI board to plug into my raspberry pi

  • Comment Link Jari Myntti Wednesday, 07 January 2015 15:11 posted by Jari Myntti

    How works TNC-Pi with Model B+ ?

    Jari OH5ZN


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