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FDIM 2024 sBITX Hat info? #bitx20help


 

Hello -

I'm new to the list and to most things BITX. I have the sBITX hat given out at FDIM and am interested in dipping my toe into the water and seeing what happens.? Right now I'm trying to gather information.? Do I need to bide my time, or is it out there?? I get a sinking feeling when I hear the words: "It's all there on GitHub."??

I've looked at sBITX.net which seems to be a project from about a year ago. Is this essentially the same project, more or less??

I've also seen Farhan's .? Is this essentially the project described at FDIM?

I was looking at purchasing a Pi Zero 2 W for the project, but a couple of questions come up.? Do I install male pins and plug the Pi directly into the board? Or would that cover up some needed pins, so I should be thinking ribbon cable?? Are there photos anywhere that show how the thing goes together?

I see some discussion of loading a code image onto a memory card. Does this mean I do not need to buy a card with the OS (Raspian?) on it?

Thanks for any guidance & 73-

Nick, WA5BDU


 

Hi Nick,
It seems to me that your information about sBitx is a little lacking.
In the title, you write about sBitx Hat, until then about sBitx. There are a few things I can say about sBitx.
The RPi 4B device is sold with 2GB of RAM, but it is advisable to use it together with 4GB of memory for more comfortable operation. The device was first produced with the addition of DE, of which 150 units were produced.
This was the first sample of further development.
?To date v2 and v3 have been released.
The difference between the latter two can be seen in the final stage.
v2 was released with an IRFZ24N and v3 with an IRF510 FET power stage.
IRFZ is more sensitive to overvoltage, while IRF can also be used at 13.8V.
There are no other essential differences in the hardware view.

As for the software, the v2 struggled with several childhood illnesses.
Since the middle of November 2023, with the release of the v3 version of the software, several modifications have been made in the following months thanks to those who know how to program. We are currently on version v3.02.

The software was installed on the then 32-bit Debian 10 OS, whose support ends this year, so Raphael and W9JES installed the sBitx software on the latest 64-bit Debian 12 (Bookworm) OS. W9JES went further by making it available and creating an additional ToolBox for better usability. You can reach all of these by entering the keywords in the search engine in the topic, then you will find the contact details. But if you wait a bit, there will surely be someone who will give you an exact link. W9JES is currently working (in addition to his work) on the development, you can read more about it in the messages he started.

You don't have to install it from the beginning on the Debian OS, because the best software is currently available in the form of an image.
That's it in short.
--
Gyula HA3HZ


 

addendum to my previous message:
According to my knowledge, the drawing described as sBitxHat corresponds to the digital part of sBitx, the difference is that the experimental amateur can add his own idea to make it a usable and working device.
--
Gyula HA3HZ


 

Also check this thread -

/g/BITX20/message/111381


 

The sBITX HAT is the same stuff (Si5351A LO and WM8731 audio codec) that is on the board that the Raspberry Pi plugs into in the original sBITX, just in a more compact form.

It was designed as part of the zBITX, a reduced cost variant of the sBITX that replaces the RPi 4 with an RPi Zero 2 W, and does away with the TFT display and replaces it with a web interface that you operate from your phone or laptop. Those changes, plus a smaller and simpler case, reduces the cost of parts by about $100, making it affordable for more hams. It runs the same SDR software but a different user interface component.

The HAT will work on any Raspberry Pi with the 40 pin I/O header (every model but the very first RPi, though the original Pi and the Zero might not have enough processing power to run the SDR software), and could be used in a full-size sBITX build with an RPi 4 (or RPi 5) and a display.

On Thu, May 30, 2024 at 10:30?AM quad via <quad=[email protected]> wrote:
Also check this thread -

/g/BITX20/message/111381


 

I still don't see any more of this than the digital part of sBitx. The information is too vague.
I'll wait for more data to appear on it.
--
Gyula HA3HZ


 

It also points to the GIT where the details about the hat are.
basically its for the person that can literally cook their own hardware
from the ground up.? By "cook" I mean assemble by copying the zbitx
design or go off in a different direction.

That means a lot of the design and build is in "your" lap and for many
that's a large task requiring electronic skills.? That and a very complete
understanding of the sBitx how and why.


--
Allison
------------------
Please use the forum, offline and private will go to bit bucket.


 

On Saturday Asher had this hardware in his booth at the Dayton Hamvention. I did not take a photo but this screenshot is from his presentation at FDIM. It was pretty small. I really like the tiny built-in screen with the ability to control everything from a larger remote device.

--
Mike KB2ML


 

The sbitx hat is a general purpose sdr interface between an analog part of the radio and the raspberry pi. It has two things: Firstly, it has an Si5351 and Second, it has a stereo audio codec.
These can used to implement an I/Q style SDR, like the softrock SDRs or sBitx. The boards came in a few hours before I left home for the FDIM. I will provide some scaffolding code soon to get everyone started with these boards.
- f

On Thu, May 30, 2024, 4:04 PM Mike Johnshoy via <mike.johnshoy=[email protected]> wrote:
On Saturday Asher had this hardware in his booth at the Dayton Hamvention.? I did not take a photo but this screenshot is from his presentation at FDIM.? It was pretty small.? I really like the tiny built-in screen with the ability to control everything from a larger remote device.

--
Mike KB2ML






 

Hi Ashhar,

Are these boards available to buy anywhere or what is the thinking about making them to available to those who weren't at FDIM ?

Thanks!

Peter EI3JCB


 

I¡¯m also interested in getting a board if it¡¯s possible, though I wasn¡¯t at FDIM.

Mark KI4HQK


 

As Colombo says, just a few questions ...

Trying to see what resources are required to get the project going.

  • ¡¤?????? The Pi Zero 2 W can be fitted with a 40 pin header and plugged directly into the hat. However, this will cover up J12 and J13. Is that an issue?? Are J12 and J13 accessed from the back of the board? Is there a photo of a completed assembly anywhere?
  • ¡¤?????? The Pi Zero 2 W was recommended and I was set to order one, but Gyula noted ¡°The RPi 4B device is sold with 2GB of RAM, but it is advisable to use it together with 4GB of memory for more comfortable operation.¡± The ?Pi Zero 2W has only 512 MB of RAM. Is the need for 2?GB or perhaps 4 GB of RAM specific to the sBITX?? Is the zBITX as presented at FDIM a separate project with software that doesn¡¯t require the same resources?
  • ¡¤?????? Is there separate software for the zBITX that has been posted or will be posted? Or is it up to the user to download the sBITX software and modify it to perform as was demonstrated at FDIM? I understand that it¡¯s a platform for the user to modify and tinker with, but what is the starting point?
73

Nick, WA5BDU


 

I was talking about sBitx, which requires at least 2GB of memory. If you know Ashhar, you know that He likes to minimize tools. What we are talking about is that there is no 7" LCD display, so it requires less memory.
Then Ashhar will tell the rest, because it is in His head.
And what you saw in the video is a digital module that connects to the RPi and the radio.
He calls it zBitx. I would rather call it tBitx ie tiny Bitx. ;-)
--
Gyula HA3HZ


Jack, W8TEE
 

I think some 7" displays have their own memory.

Jack, W8TEE

On Friday, May 31, 2024 at 10:24:10 AM EDT, HA3HZ <gyula@...> wrote:


I was talking about sBitx, which requires at least 2GB of memory. If you know Ashhar, you know that He likes to minimize tools. What we are talking about is that there is no 7" LCD display, so it requires less memory.
Then Ashhar will tell the rest, because it is in His head.
And what you saw in the video is a digital module that connects to the RPi and the radio.
He calls it zBitx. I would rather call it tBitx ie tiny Bitx. ;-)
--
Gyula HA3HZ

--
Jack, W8TEE