amedes / pico_tnc

TNC for Raspberry Pi Pico

PICO TNC

PICO TNC is the Terminal Node Controler for Amateur Packet Radio powered by Raspberry Pi Pico.

This TNC has same functionality as WB8WGA's PIC TNC.

PIC TNC features

• Encode and decode Bell 202 AFSK signal without modem chip
• Digipeat UI packet up to 1024 byte length
• Send beacon packet
• Support converse mode
• Support GPS tracker feature
• Support both USB serial and UART serial interface

Additional features

• Support KISS mode
• Support multi-port up to 3 ports

How to build

git clone https://github.com/amedes/pico_tnc.git
cd pico_tnc
mkdir build
cd build
cmake ..
make -j4
(flash 'pico_tnc/pico_tnc.uf2' file to your Pico)

pico_tnc's Issues

Configuration Help and PCB Design

Hi, I created a PCB based on your design. The decoding is working very well, but I am a little lost of the syntax of some of the commands. Do you have a more detailed guide or at least notes? Also, I would like to send you one of my PCB's as a thank you for creating this project. Thanks!

Jason K4APR
[email protected]

R6 value for Kenwood-type connectors?

Hi, I noticed there is no R6 value specified for Kenwood-type radios. Is R6 meant to be omitted in this case?

PCB

do You have a PCB Board files ?

Receiving packets in KISS mode?

Has anyone had success receiving packets in KISS mode? I can only transmit them. I can receive packets and the unit digipeats.

PCB Design

Hi,

I'm creating a PCB for this that I plan to make available, but I have a question.

When you don't have a variable resistor, what values do you use for R7 and R8? The same as R6? (Based on the radio?)

Thanks,
Andrew (JJ1OKA)

Can add Simple BBS and Chat server ?

Dear Sir,
can add BBS and chat feature to this TNC ?
Best Regards,

smake error

When I run smake .. I get the following error:
CMake Error at pico_sdk_import.cmake:44 (message):
SDK location was not specified. Please set PICO_SDK_PATH or set
PICO_SDK_FETCH_FROM_GIT to on to fetch from git.
Call Stack (most recent call first):
CMakeLists.txt:3 (include)

Can you help?

Pure KISS TNC mode

Please, how to make a pure KISS TNC mode by default?

gps not work

HI, I guess is somethings I don't understand in this tnc....but why cannot send any packet from gps in tracker ..mode..? I mean, is there a baud rate for gps? is it 9600 ,4800, or every one work??
It work as beacon..no problem , it work in conv mode...I was on wb8wga site to see if there is a cmd for that...they use a jumper wire to work in tracker mode ...
If you can help me in solve this , please do.
Great job for the new pico...
tnx de iw0hjz alberto

$GPGAA or GPGGA ?

I think this is a syntactic error in the help.

The helps estates that the available parameters for GPS commands are gps $GPGAA or gps $GPGLL or gps $GPRMC. Trying with GPGAA and this returns a syntax error (?). So I think that GPGAA in the help must be changed by GPGGA.

Thanks for that project!

9600

Does this support 9600 baud?

Thanks