Configuration Help and PCB Design

[K4APR]

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]

[amedes]

@K4APR Sorry for late response.

Pico TNC is simulating WB8WGA's PIC TNC as much as possible. So please refer PIC TNC's document for command detail.

WB8WGA's Simple Inexpensive TNC | Enide!
http://www.enide.net/webcms/index.php?page=wb8wga-tnc

The references is useful above web site.
Thanks for interesting my project.

[vaelen]

@K4APR , I'm also designing a board for this project. I'm hoping to add KISS support to the project and then add a separate network server to it so it can be used as a network TNC or an I-Gate. Let me know if this is something you'd be interested in. I'll release the files for the PCB once I know it works.

[K4APR]

Andrew, I'm absolutely interested.  My board design is fairly simple and I'm willing to share it.  I'm new to how GitHub works and I don't know if there is a way to upload images. Jason Rausch K4APR www.ke4nyv.com On Tuesday, October 25, 2022 at 03:37:30 AM EDT, Andrew Young ***@***.***> wrote: @K4APR , I'm also designing a board for this project. I'm hoping to add KISS support to the project and then add a separate network server to it so it can be used as a network TNC or an I-Gate. Let me know if this is something you'd be interested in. I'll release the files for the PCB once I know it works. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

[K4APR]

[K4APR]

@K4APR Sorry for late response.

Pico TNC is simulating WB8WGA's PIC TNC as much as possible. So please refer PIC TNC's document for command detail.

WB8WGA's Simple Inexpensive TNC | Enide! http://www.enide.net/webcms/index.php?page=wb8wga-tnc

The references is useful above web site. Thanks for interesting my project.

Thank you for the information. I'll look at this link and see if I can find answers to my syntax questions.

Jason K4APR

[vaelen]

Oh, nice! I decided to go with through hole components and provide more of the kit experience. I ordered my PCBs today, so we'll see how they turn out. I've done custom boards with the RP2040 CPU on them before and they work great. (The Raspberry Pi foundation provides a great example schematic.)

My plan is to have a separate board with a separate Pico running the network server. This is mainly because I want to use the Arduino SDK and I don't want to try and rewrite @amedes code to run under the Arduino SDK.

All that being said, it wouldn't be that hard to put the whole thing on a single custom board with all SMT parts and an RP2040 and get rid of the pico itself, but I figured this might be more kit-builder friendly.

[vaelen]

The biggest thing I'm worried about is the lack of a variable resistor in my design.

[k7ilo]

Question!!
Is this still in development and how are parameters saved. ONce the Pico is powered down, all settings are lost. But this is using the provided .uf2 file. Do I need to build my own code to add that function?

Thanks

[9M2IBR]

If it possible to use this as an iGate with rpi pico W?

[n0nas]

Hi K7ILO.
I think you need to make your desired config changes, then issue the PERM command. If the firmware operates like the older KPC2-KPC4-KAM TNCs, the PERM command writes your new config data to internal storage on the Pico board. Data should be retained through any power off cycle. Doug.

[k7ilo]

Hi K7ILO. I think you need to make your desired config changes, then issue the PERM command. If the firmware operates like the older KPC2-KPC4-KAM TNCs, the PERM command writes your new config data to internal storage on the Pico board. Data should be retained through any power off cycle. Doug.

Ok Doug
Ill give that a try. I kinda walked away from that project for something else and now Im back to this.

Thanks

Kilo
K7ILO

[vaelen]

I ran into problems with mine, I think because I made a mistake when copying the circuit over to my PCB. Which is too bad, because I have 10 of those PCBs lying around.

Here is what I had: https://oshwlab.com/andrew_3060/picotnc-tnc-board

I think the pico_tnc project has an updated schematic in the readme now. If someone wants to collaborate on this using EasyEDA, please let me know and I will add you as a contributor on the project.