Digi Pi project

 Last Updated: 16 January 2022 0943 hrs UTC

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The Digi Pi TNC project is created by Craig, KM6LY to work with the raspberry pi zero w and the Fe-Pi V2 as well as the Audio Injector Zero, which is now being built by Budd, WB7FHC. There is a nice diagram that is online and it is created by Stephen Smith, W9GPI. 

You can view the Digi Pi project on KM6LYW radio on YouTube or his website.

From Digi Pi's group.io post for a replacement to the Fe-Pi V2. Jake, KF0ARE had used the Audio Injector Zero hat to work with the Digi Pi.  Jeff Hochberg, W4JEW is also very helpful in the group and has lots of ideas!

Link (@11:45) to where I found the information from.

I have created an add-on board that is still in the design phase that can be put on top of the Fe-Pi V2. A couple of things that I put on the board. 

1. Adding 3.5mm jacks to connect it to the Fe-Pi V2 with an audio cable.

2. LEDs for Bluetooth, TX, RX, and power. All could be disabled with jumpers if you don’t want to have the LEDs lighting up. 

3. I have added a left-right channel selector for both the line in and line out, just in case there’s a difference… 

4. I have added 18pin 2.54mm male headers for the Adafruit Mini PiTFT. You will need a cable to convert the 18pin to 24pin that the Mini PiTFT uses. The reason for the 18pin is for space-saving in the board and enables remote mounting for the display. 

5. The UART Serial port is on the Add-On Board and I will keep it that way... I will have other designs based on the layout.

6. I will have multiple different radio connection interfaces when I create them. and create the add-on board to work with the Audio Injector Zero. 

        Old design:


        New design:

Update on 15 September 2021:

I have ditched the relocation for the headers for the display. have moved the LEDs to the right of the board instead of the left of the board. Now instead of the tall 3.5mm jacks, will be using the PJ324M 3.5mm Jack for the Line in and out. will not be using headers for selecting which led to being on or which left and right channel.

Back

Bottom

Front

Top

Sorry for the non-organized images.

Update on 17 September 2021:

10 Prototype boards have been ordered and components are on the way... I am still trying to get hold of the Fe Pi V2 to test out. 

I am going to keep 5 for local hams here in 9V1 land to try including me... 

I am going to send one to KM6LYW Craig.

KE4BML Carlton has requested a test board so there are three more for anyone who wants it... 

Update on 18 September 2021:

WA1KLI John has also requested a test board so there are two more for anyone who wants it...


Update on 7 November 2021:

I have Created Version 2.1 and have sent out prototype boards to testers. 


Update on 16 January 2022:

Waiting for the Testers Reports.


Please use to contact form to request.

73, 

Fu Hang

de 9V1FH/AI7GW 

Comments

  1. KE4BMLNovember 22, 2021 at 1:21 AM

    Just received board, do u have a schematic for LED colors and resistor values

    ReplyDelete

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