DigiPi APRS/winlink/node Step-by-Step build

Discussion in 'Amateur Radio News' started by KM6LYW, May 4, 2021.

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  1. KM6LYW

    KM6LYW Ham Member QRZ Page


    image: http://craiger.org/craiger/digipi.jpg

    We'll use a Raspberry Pi ZeroW, an FE-PI AudioZ audio board, and an Adafruit 1.3" tft display to create a full featured packet radio controller/TNC. This video will cover the hardware side of things and a quick test as an APRS digipeater using "direwolf". This is in addition to Linux-Node, Winlink Server, KISS TNC, Pat Email client, ardop modem, ax.25 network stack and rig control.

    Update: Software image and wiring diagram now available: http://craiger.org/patreon/
    Last edited: May 4, 2021
    AD5KO, K2PMD, TA2EE and 3 others like this.
  2. K0UO

    K0UO Platinum Subscriber Platinum Subscriber QRZ Page

    Oh no more/ Winlink
    I will just set back and review the post.

    73 from,
    The K0UO " Rhombic Antenna Farm"
    1 person likes this.
  3. N1IPU

    N1IPU Premium Subscriber QRZ Page

    Cool little project. Guess it's back to the building bench even if I don't need it.
    KM6LYW likes this.
  4. W9HBH

    W9HBH Ham Member QRZ Page

    I don't mind paying for the instructions and software, but a monthly subscription fee even if it is only $5
    K0PIR likes this.
  5. AA5H

    AA5H Premium Subscriber QRZ Page

    Sounds like fun, especially since it utilizes through-the-hole components. My last project involved soldering multiple 0402 SMB IC components, an aggravating
    experience. o_O
    KM6LYW likes this.
  6. KE4IYP

    KE4IYP XML Subscriber QRZ Page

    Those FE-pi audio cards are basically unobtainable right now... I think he posted a link to a person that is going to start having them manufactured, but it looks like you can only buy them as part of his other project. So. That's frustrating.
    KM6LYW likes this.
  7. KM6LYW

    KM6LYW Ham Member QRZ Page

    The middle board is an "FE-Pi Audio Z V2". If you search for that, you'll find the manufacturer went out of business. However, Budd https://www.wb7fhc.com/ managed to save the design files and makes limited runs. Contact him directly https://www.wb7fhc.com/about-the-fe-p... . i bought a few, i think they're about 18 bucks shipped.
    G0TRT likes this.
  8. KM6LYW

    KM6LYW Ham Member QRZ Page

    Last edited: May 7, 2021
    K0PIR likes this.
  9. N1FM

    N1FM Ham Member QRZ Page

    What do people use APRS digipeaters for? I have tracked large and small ships with APRS, but I'm curious how hams use them and why?

  10. KM6LYW

    KM6LYW Ham Member QRZ Page

    A digipeater, like a normal repeater, repeats your signal/packet over a much broader region. The goal is to reach additional receivers, some of which are connected to the Internet (igates) which forward your packet to the Internet for additional (global) routing.

    As such, I can send an APRS text message to a radio to anywhere in the world... or email, or sms, and receive replies.

    APRS digipeaters/igates are a physical bridge between the APRS RF network and Internet. It's highly underutilized imho.

    Practical examples;

    I sent an SMS message to my wife in California via my Yaesu FT1DR HT from old town square in Prague, Czech republic, and she replied.

    From Desolation wilderness, I sent a similar message, only via the digipeater on the International Space Station which is overhead several times a day.
    AD5KO, K2PMD, WB5WGA and 2 others like this.

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