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DVPi schematic final version

 DVPi schematic final version

I know some nice PCBs are designed for DVPi. I also ordered 5 samples of the PCB designed by EA7GIB and recently received it.

However, I had to add one LED and one switch to the needs of users. But this is just an option. Add this feature only if you need it.

You must read the document below link before reading this document.

http://www.hamskey.com/2020/08/dvpi-hardware-expansion-ptt-encoder-and.html

This document is an extension of the document at the link above. Most of the DVPi's hardware is explained in the link above.

This document describes only recently added hardware.


1.Schematic


2.Added Hardware

2.1 Added TX Led (transmission)

An LED has been added to indicate TX (transmission).

This can also be replaced by the PC817, just like the RX Led.

It can be used usefully when using the PTT button on touch screen or Vox function .


2.2 Fun2 S/W

The final version of DVPi supports Dual VFO and D-Star.

Function 2 switch can be used in Dual VFO or mode change (DMR <-> D-Star) according to user's selection.

GPIO_FUNC2_TYPE=1 : Function 2 switch is used to change VFO (Vfo A <-> Vfo B)

GPIO_FUNC2_TYPE=0 : Function 2 switch is used to change Mode (DMR <-> D-Star)




3.Conclusion

Again, DVPi can be used without any hardware. Just, if you need, you can add any hardware you want as RX Led, rotary Encoder ...

Recently, the hose.brandmeister.network server went down. So, Talk group information is not displayed in DVPi. 

I'll wait a few more days and look for other ways before DVPi 1.0.

We can bring the Lastheard information from https://brandmeister.network/ but it will require quite a bit of network traffic. 

Let's find a better way together.


Ian KD8CEC



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Comments

  1. MaurizioSeptember 17, 2020 at 12:36 PM

    Could you make V. 0.8 available so we can test everything ..
    Thanks Maurizio I3YBD

    ReplyDelete
    Replies
    1. KD8CECSeptember 19, 2020 at 7:56 AM

      I'm doing some tests to get the D-Star and Dual VFO builtin. I will release Version 0.8 in a few days.
      Thank you for your supoort.

      Delete
  2. DS5QDR Lee, HeonminSeptember 17, 2020 at 2:27 PM

    Thank you for all the functions and circuits of DVPi.

    In Korea, we are working on a joint production of DVPi.
    Design and PCB Artwork will be finalized soon.

    Many OMs, including me, thank you.
    I think DVPi will contribute a lot to the development and expansion of DV communication.

    Thank you.

    ReplyDelete
    Replies
    1. KD8CECSeptember 19, 2020 at 7:58 AM

      Thanks for your interest.
      Just test Version 0.8 and distribute the stable Version 0.9.

      There are no functional additions from Version 0.8. I will only stabilize it until Version 1.0 is reached.

      For the hardware, this is the final version.
      Ian KD8CEC

      Delete
  3. DS5WISSeptember 20, 2020 at 2:43 PM

    I applaud your passion and dedication. Everything is ready. We look forward to the launch of the program. Thank you.

    ReplyDelete
  4. KC1ATWSeptember 21, 2020 at 3:24 PM

    Hi Ian, appreciate your efforts on DVpi, and I love it. Another fun of DVpi is to watch YouTube with cute 3.5" LCD screen, response time is slow, but still fun. In the future, will you consider to set screen resolution to 640 x 480? instead of 720 x 480? if so, I do not need to change resolution when I watch Youtube. Thank you

    ReplyDelete
    Replies
    1. KD8CECSeptember 29, 2020 at 6:55 AM

      Excellent
      That's a great idea. In fact, I don't do DMR communication very often, so I was looking for another use of DVPi.
      Ian

      Delete
  5. MaurizioSeptember 21, 2020 at 11:48 PM

    Good morning Lan
    I noticed this anomaly .. maybe not, if the DVPi is being listened to on a Talk Group and we want to change it to another TG it is not possible to switch to another one and it does not change even confirm it with the group selection button ... is this normal?
    Thank you, 73 I3YBD Maurizio

    ReplyDelete
    Replies
    1. KD8CECSeptember 29, 2020 at 6:58 AM

      Yes it is normal.
      That's because it doesn't change immediately on the DMR network. I tried processing with a different timeslot, but there was no big difference.
      You can manage your sessions on the brandmeister homepage.
      Ian

      Delete
  6. Tom VE3NYSeptember 22, 2020 at 7:50 AM

    Hello Ian,

    is 2.2 Fun2 S/W located in file dvpi.ini?

    Tom VE3NY

    ReplyDelete
    Replies
    1. KD8CECSeptember 29, 2020 at 6:59 AM

      I released Version 0.8 today. This is a feature in Version 0.8 Ian

      Delete
  7. Tom VE3NYSeptember 22, 2020 at 10:51 AM

    All,

    it took me a while to figure out that the way to use the rotary encoder was to rotate to the desired TG # shown at bottom and then wait until the panel displaying the selected TG blinked and disappeared .... and then depress the encoder button down. All functions working great ... waiting for Version .8/.9 to try DStar.

    Tom VE3NY

    ReplyDelete
  8. VK6NJPSeptember 22, 2020 at 11:09 PM

    Hi Ian,

    I have just purchased 5 of the Version 4 boards do you have access to the documentations for this version I can only find the version 3 information. de VK6NJP

    ReplyDelete
    Replies
    1. MaurizioSeptember 22, 2020 at 11:48 PM

      I am waiting for the new version of the Front Panel that will have the button to select the Dstar or DMR that the Korean colleagues are preparing it.
      I3YBD Mauritius

      Delete
    2. loveleen thakurSeptember 23, 2022 at 9:31 AM

      great

      Delete
  9. TuningSeptember 23, 2020 at 10:28 AM

    hi, will it be possible to implement bluetooth functionality to use wireless microphones?

    ReplyDelete
    Replies
    1. KD8CECSeptember 29, 2020 at 7:02 AM

      good idea
      If I buy a Bluetooth Microphone, I will test it by enabling Bluetooth.
      Ian KD8CEC

      Delete
  10. MaurizioSeptember 28, 2020 at 3:18 AM

    Hi Lan
    We have everything ready to go to Version 0.9 how are the tests you are doing going ... ??? do you think you can find the time to put it at your disposal ???
    Thanks, Maurizio

    ReplyDelete
    Replies
    1. KD8CECSeptember 29, 2020 at 7:04 AM

      I just released Version 0.88
      From Version 0.9 to Version 1.0, we will continue to stabilize.
      Fun DVPi is created with your efforts.
      Ian KD8CEC

      Delete
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  15. Sivan PanangadSeptember 27, 2023 at 6:46 AM

    Congrats KD8CEC too much for your high efforts to facilitate various modes of communication modes and technologies to our ham radio community. Special regards for you from the state of Kerala, India by Sivan VU3YFL. Just today I installed new version of uour DVPi, working well, some issue with my hardware setting do not get audio via audio jack of RPi, audio from other apps are okay. Checking. 73.

    ReplyDelete
  16. anonymousOctober 2, 2024 at 1:46 AM

    Depending on the user's preference, the function 2 switch can be employed in Dual VFO or mode change (DMR <-> D-Star). Check painters!

    ReplyDelete

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