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On Tue, Jan 23, 2024 at 12:58 PM, WB6GJE Mike wrote:

Get a consensus of advice and go with information that appears consistently across a number of YouTube videos and/or blog posts.

Wow, that's a perfect lead-in for me.? I wrote most of the below for another platform, but IMO it fits into this discussion here about Pi 5 and NVMe.? It also fits into some stuff I wrote earlier about how I feel Pi will be under more pressure from small form-factor (SFF) PCs using x86 processors, and that the sBITX community will have to be ready for things to change more rapidly than in the past

IMO design decisions made by the Pi Foundation make it relatively easy for them to move on to Pi 6 and beyond because they've put all the IO onto a separate chip.? That makes it easier for them to drop a newer/faster CPU into their design than they have in the past, and such newer/faster ARM CPUs already exist.? ? They may have to, because SFF PCs IMO are already strong competitors so there is already a competitive threat that could easily intensify.? I'm saying this since I think a lot of people have gotten used to the slower development pace of the COVID era, but I think those days are long over.??

So, we see that Jeff Geerling is jumping onto the Pi 5 vs N100 SFF PC bandwagon after Christopher Barnatt / Explaining Computers did so a week or so ago.??

Jeff:??

Chris:??

Jeff is doing an almost exact match on price and is fairly close on form factor, whereas Chris's N100 PC was not a SFF PC, it was a mini-ITX so bigger case and PSU and cost 1.5 times more than his Pi 5 setup.? ?Yet Chris's N100 has very similar specifications to Jeff's.? Chris provides more details on specifications and performance than Jeff did.? For instance Chris tells us his motherboard supports two-lane PCIe V3, whereas Jeff doesn't get into that level of detail.

Jeff's video is really amusing to me since my PCIe to NVMe adapter arrived last night for my Pi 5 and I was doing almost all the same stuff he was doing in the setup phase of this video myself last night.? My Pi 5 setup is pretty much identical to Chris's.? We both have the Pineberry Pi Hat! Bottom whereas Jeff has the Top model.??

Jeff is right that the Pi world requires you to select, purchase and assemble more 'stuff' to get a useful setup whereas most SFF PCs come with all the stuff you need right out of the box.? ?He is also right that it's really hard to know if a given Pi case will work with a given top/bottom device and still provide good air flow, still have the holes line up with the jacks, still be able to get at the sdcard, power button, camera/display connectors, etc.

My summary of both videos is that at a similar price point the N100 platforms delivers somewhat faster performance but draws somewhat more power both at idle and under load to deliver that performance.? The N100 is clearly faster at anything that involves graphics and video since it has a better GPU with better software support.? The N100 takes up more space, but is more expandable.? Jeff's N100 has room for a 2nd NVMe storage device and has a slot for mobile data dongles too.? He doesn't say if the memory is expandable or not.? Also, I don't know how 'battery friendly' its voltage requirements are.

On the software side assuming you are using the "native" software for the box, Debian Linux on the Pi boots up pretty much ready to use whereas Windows makes you accept a EULA, accept or avoid a Microsoft account, turn off a whole bunch of data collectors, only provides the Edge browser by default etc so is worse from a privacy point of view.? Windows is also a bigger target for malware providers although one shouldn't presume Linux isn't also targeted quite often too.? And, of course, you can always install Debian on the N100 PCs and bypass Windows entirely.? Regardless of what thinks of Windows, though, being able to offer it is a competitive advantage, IMO.

--
Regards,
Dave, N1AI

Thanks for all the answers!

: )

73,
Rafael

Hi Hank,

Can you be a bit more specific? There is no i2s-nmap, but i2s-mmap.

- Rafael

Thank you for the reply. I have been doing some research into these radios for a possible purchase. I am leaning toward the sbitx at the present.? As a past Radio Shack repair tech, I am very familiar with service of electronics. If I do purchase one of these, I am hoping repair will never be needed. But the fact that the schematics are available and a very straightforward design make them very appealing, compared to many other radios I have found. They seem to be very easily modifiable for any new things I might wish to add. My biggest challenge will be to learn the coding to modify software to implement any modifications! If I get one, I will want to make a battery pack and perhaps an antenna tuner for camping or even while sitting in the front yard supervising grandchildren. It seems a better choice than playing games on a cell phone.

Scotty

Topographically they are very similar.?
Its small design differences.

Things like lower output load resistance output transformer turns ratio,
construction,?and increased Drive to meet the need.

Heat sinking is also critical, as are things like lead lengths and mechanical layout
are also factors.

I've seen uBitx deliver over 15W when the drivers were up to the task.

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

Bob,

I think I got it. Imported your backbrace stl into tinkercad and used the grid there to get it to the mm.

Left to right is 196mm and the "middle" hole is 42mm from left.??

Let me know if you come up with something else.

73
Mark
--
AJ6CU/7
KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico
https://github.com/aj6cu

Mark

?I meant the rounded part to face in and the flat back to contact the leg angle stop. Thanks for the catch. I'll improve the directions.

Attached is a drawing of hole locations. I know what you mean about iterative measurement. I made a quick, 1 mm thick plate with holes to check these.


--
73
??? Bob? KD8CGH

I have been looking at the schematics of the ubitx and sbitx units.
Both appear to use the IRF510, at least in the diagrams that I found. The sbitx is advertised as 20 watts and the ubitx is advertised as 10 watts. Are they using different versions of the same unit, or just a better design and heat sink?

What am I missing??

Scotty

On Mon, Jan 22, 2024 at 11:50 AM, Dave, N1AI wrote:

On Mon, Jan 22, 2024 at 02:30 PM, WB6GJE Mike wrote:

FYI, Jeff Geerling covers the use of USB and PCIe booting for Raspberry Pis in great detail on his blog ( ; for example - ) and on YouTube ( ).

I definitely love Jeff's work and watch every video as they come out.? The only caution I would raise is that he tends to be working on the bleeding edge with Pi, so some of his older articles don't age too well, because once the stuff he is working with becomes mainstreamed usually easier ways to do things have been invented or discovered.? This is not the case for PCIe right now, it is still "bleeding edge" and his stuff is still the best reference IMO.? For USB I posted the Tom's Hardware link because I think it's easier for most people to follow.? In particular Imager can be used to do some things Jeff did manually.

-- Regards, Dave, N1AI

I agree with Dave - should have noted that Jeff Geerling is an early adopter and he typically does not update his posts with information as features go mainstream. For example, I was following his guidance on setting up an NVMe drive using one of the PCIe adapters for the Raspberry Pi 5. Turns out it was missing one config change necessary to make it work with the production version of the board (but worked with the proto board he reviewed). That said, don't be afraid to use the Google or DuckDuckGo for any of the Pi-related questions posed in this forum. Get a consensus of advice and go with information that appears consistently across a number of YouTube videos and/or blog posts.

Bob,

That would be good if you have a chance.? Trying to place the holes once. I never seem to measure them exactly and find myself always printing, move a mm, print again, move a mm, repeat...

Just printed it, nice design!? I assume the rounded part of the legs face outside (away from the sBitx) ?

73
Mark
--
AJ6CU/7
KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico
https://github.com/aj6cu

Sorry, I should have added the stock screen is the "official" Pi screen:

I would love to have a better display for the V2/V3, without so much wasted space around the edges.

LCD is for the sbitx v3.

On Tue, Jan 23, 2024 at 10:22 AM, JJ - W9JES wrote:

I will update the wiki since the applications have evolved. The AIO installer for "sBITX Companion Apps" will be the source for all future updates and additions. Links to the standalone apps will be posted there on the GH page to make it easier to find and learn about the apps.?

I have also been reading the threads and comments to understand common issues that some newer folks are having or even those on different versions such as DE, V1, V2, V3. I wrote a couple more apps to help those safely backup, upgrade, downgrade, etc. Stay tuned.

I am still considering making videos of the apps and publishing them on my website.?

That's all excellent news!? Sounds like you are having fun, and that many others are benefiting from your work.
?
--
Regards,
Dave, N1AI

Mark
?? I just measured the distance between them. I can go back and measure them referenced to the top corners.
--
73
??? Bob? KD8CGH

One thing: is the standalone Telnet app now super-ceded?

I ask because I've updated our?sBITX HowTo's?page to point to this thread and list the programs:

• Telnet Companion App:?link
• sBITX Companion Apps:?link
  • sBITX Manager: An application that can be used to store frequencies and provide auxiliary control of the transceiver.
  • sBITX Scanner: An application that scans frequencies aiding in finding activity.
  • sBITX ScreenControl ~ An application to change the default window size for better scrolling such as using WSJT-X and fldigi natively on the the transceiver.
  • sBITX Backlight ~ An application to control the screen brightness for power conservation and eye comfort.

... and I don't know if the first line should be retained.

Hi Dave,

I will update the wiki since the applications have evolved. The AIO installer for "sBITX Companion Apps" will be the source for all future updates and additions. Links to the standalone apps will be posted there on the GH page to make it easier to find and learn about the apps.?

I have also been reading the threads and comments to understand common issues that some newer folks are having or even those on different versions such as DE, V1, V2, V3. I wrote a couple more apps to help those safely backup, upgrade, downgrade, etc. Stay tuned.

I am still considering making videos of the apps and publishing them on my website.?


- JJ

I have an original, LCD display available for a uBitx V6 if it needed.


- JJ

Bob,

Perfect!? Do you have the dimensions on the location (x,y) of those screw holes? I will just make them an option on my 3d printed case and reference your work.

73
Mark

--
AJ6CU/7
KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico
https://github.com/aj6cu

Hi Jeff,

Which radio needs the part?? A site, V6 uBiTx, or a V5 or earlier uBiTx?? There are three different screens, one for each plus the Nextion screen for the uBiTx mods.

73
Evan
AC9TU