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Re: Anyone got a ZBitX or SBitX connected to the Internet? Ken N2VIP All Messages By This Member   #116059   To upgrade the RPi in the zBitx will 'require' repackaging the radio, as the RPi it ships with, an RPi Zero 2 W is about half to one-third the volume of an RPi 4 or 5. ? The RPi Zero 2 W has the same processor as an RPi 3B+, and half the ram (512M). To upgrade it would require an RPi 4 or 5. ? The size issue isn't a concern with the sBitx, as the RPi 4 and 5 are physically the same size. ? The question to be answered is if the sBitx or the zBitx needs more RAM, more CPU, or both to run the apps you're mentioning along with other radio duties. ? I'm looking forward to hearing about your experiments, ? Ken, N2VIP

Re: sBITX 64Bit Pi Image Available #sBitx Joel Caulkins/N6ALT Member Profile All Messages By This Member   #116058   David, ? I believe it piggybacks the real time clock modules I2C pins and power pins. ? Joel N6ALT

Re: Anyone got a ZBitX or SBitX connected to the Internet? Travis Siegel All Messages By This Member   #116057   开云体育 Buddy. I'm figuring we can just install espeak/orca on one of these radios, and have complete speech access that way.? It's possible we'll need to swap out the raspberry pi board, to either one with more ram or one with more cpu muscle, depending on what's required to make it all work, but that shouldn't be a major issue, as long as we can put the wires back where they go.? And, I'm fairly certain that the only pi that needs to run the speech software is the one that handles the display, because that already has all the info we need to operate the system. I was planning on buying one of the zbix devices when they started taking orders again, and seeing exactly what it would take to get it operational with speech feedback.? I'm thinking it shouldn't be a difficult process, considering it already runs a full blown raspbian setup anyhow, and we already can run speech on those, so it should be as simple as installing a few new packages, and poof, talking zbix. It's of course possible it won't be that simple, but I won't know that until I get one of them here to check out how exactly it works. On 2/2/2025 1:22 AM, Buddy Brannan wrote: toggle quoted message Show quoted text To be clear, I’m OK with the port forwarding, or putting something on Tailscale or (currently using) Zerotier. I was really asking if anyone had this set up that I might look at. As I say, longshot, I know, and I wouldn’t expect that anyone has one set up full time.? -- Buddy Brannan, KB5ELV, WRVB670?- Erie, PA Email: buddy@... Mobile: (814) 431-0962 On Feb 1, 2025, at 11:51?AM, ww6x via groups.io <ww6x@...> wrote: assuming your shack and 'comfy bedroom' are behind the same home router But I wrote that the shack had it's own router. Right? --? ww6x

Sbitx v3 file requirement James French All Messages By This Member   #116056   Hello. ? Wondering how important the original sbitx.db and the hwini files are from the original disk I got when I purchased my unit a few years ago? ? Before you ask, I DID back up those two files to a safe disk, I thought. That backed up disk was used by the xyl by mistake and overwritten. It was stashed away separate from my other SD disks but in the same drawer that the others were. ? Thanks in advance, ? James W8ISS

Re: Error starting sBitx v4.3 64 bits [email protected] All Messages By This Member   #116055   Thanks Evan ? now it works. ? 搁补尘ó苍

Re: sBITX 64Bit Pi Image Available #sBitx WK4DS All Messages By This Member   #116054   I am curious about the voltmeter mod. Which two gpio pins does it connect to? I saw it uses two but the notes dont mention which ones.? David toggle quoted message Show quoted text On Sat, Mar 1, 2025 at 12:58 JJ - W9JES via <jj=[email protected]> wrote: Software Release Announcement: sBitx Version 4.4 Version 4.4 introduces new features, enhancements, and fixes to improve your experience. ? Here’s what’s new: ? New Features: Added power down button from sbitx menu 2 Added Macro chooser button in the main GUI for FT8/CW modes Added full spectrum/waterfall button for CW modes Added current/voltage meter display functionality for INA260 Power Sensor add-on hardware Added max-hold visualization for POWER and corrected SWR calculation in the case of little or no FWD POWER Added AUTOSCOPE in MENU 2 which adjusts the vertical offset of the scope and the base value for the waterfall automatically, making it easier to see signals clearly. ? Fixes and Improvements: Fixed the Macro change screen refresh when changing macros Fixed the CW Macro issue when the delay/WPM were set at a threshold Adjusted CW shaping timing and reduced from 20ms to 4ms for improved CW transmission Fixed the "crashing" noise in voice, FT8, and DIGI modes Please see the release notes at ?for more information. To get this new update, please visit our wiki ? ? ? ? ? ? ? Sincerely, The 64 bit sBitx Development Team

Re: reviving my sbitx v3 Michael Bales All Messages By This Member   #116053   开云体育 Yes! An ounce of prevention.... toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> Sent: Sunday, March 2, 2025 10:30 AM To: [email protected] <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: [BITX20] reviving my sbitx v3 ? Well, who knows how it got damaged. Don’t forget to put D7 back in there, and it wouldn’t hurt to put something even a little beefier like two or three of the one amp diode in parallel. This is fantastic that you’ve been able to figure this out There are lots of different systems out there for polarity protection, use whatever you like. Gordon kx4z? On Mar 2, 2025, at 12:26, JJ - W9JES via groups.io <jj@...> wrote: ? You can buy one prebuilt. ? -- Mike - K8MCB?

Re: reviving my sbitx v3 Michael Bales All Messages By This Member   #116052   开云体育 Thanks for the link, I'll definitely consider this option! toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of JJ - W9JES <jj@...> Sent: Sunday, March 2, 2025 10:26 AM To: [email protected] <[email protected]> Subject: Re: [BITX20] reviving my sbitx v3 ? You can buy one prebuilt. ? -- Mike - K8MCB?

Re: reviving my sbitx v3 Gordon Gibby KX4Z All Messages By This Member   #116051   开云体育 Well, who knows how it got damaged. Don’t forget to put D7 back in there, and it wouldn’t hurt to put something even a little beefier like two or three of the one amp diode in parallel. This is fantastic that you’ve been able to figure this out There are lots of different systems out there for polarity protection, use whatever you like. Gordon kx4z? toggle quoted message Show quoted text On Mar 2, 2025, at 12:26, JJ - W9JES via groups.io <jj@...> wrote: ? You can buy one prebuilt. ?

Re: reviving my sbitx v3 JJ - W9JES All Messages By This Member   #116050   You can buy one prebuilt. ?

Re: reviving my sbitx v3 Michael Bales All Messages By This Member   #116049   开云体育 It was in fact one of the IRF510s that failed. So I will replace both with a fresh pair, then proceed to recheck all of the active components in the PA section. If all is well, I believe I will incorporate your reverse polarity protection circuit! Thanks again! Mike - K8MCB toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> Sent: Saturday, March 1, 2025 4:52 PM To: [email protected] <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: [BITX20] reviving my sbitx v3 ? So typically what you do there is unsolder the drain on each MOSFET and just disconnect it so that you can stop those from potentially taking all the current and then see if you still have the direct short You have to keep working at it until you find out where the current is going, slick tricks like looking for which traces are hot or which voltages are low might help On Mar 1, 2025, at 18:43, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote: ?

?Well, the reverse voltage or whatever happened might have fried the MOSFETS?

On Mar 1, 2025, at 18:27, Michael Bales via groups.io <mikebales73@...> wrote:

?

Yes, so I've removed D7, I have a direct short to ground, somewhere. I haven't even thought of plugging a pi into it since this began. Right now, even if I apply only 2-3v, the fat trace running from the main switch then around the edge of the board to the PA xformer is VERY hot. I don't have a component tester at the moment, to examine whats going on with the individual transistors. Any suggestions are welcome.

---

From: [email protected] <[email protected]> on behalf of Gordon Gibby KX4Z via groups.io <docvacuumtubes@...>
Sent: Saturday, March 1, 2025 3:47 PM
To: [email protected] <[email protected]>
Subject: Re: [BITX20] reviving my sbitx v3

?

If you have a current limited supply at about 2Amps

OR?

a variable voltage supply,

Then you could do a preliminary test after replacing D7 so you again have SOME reverse polarity protection.? ?We have had MULTIPLE radios severely damaged by good friends of mine in Northern Florida by accidentally getting the polarity backwards.? ?It only takes a blink of an eye.

I use a "wall wart" that ONLY puts out 12V and can't put out more than 1-2Amps for initial?testing of some of my radios.

Alternatively, I have a MFJ power supply that is adjustable.? ??

With the Raspberry Pi DISCONNECTED, you?can very carefully apply current limited source, or else use a variable voltage source of about 5V and see what current flows -- there should?be VERY LITTLE if the raspberry isn't connected.? ? Then if you can get the voltage up to 12V without having current more than 1/2 amp or so -- you might be in OK shape.? ? But at that point I would carefully measure the output of the 5V regulator and see if it was damaged BEFORE CONNECTING ANY RASPBERY?TO IT.

If you are lucky, not all the 2n2219s were damaged.? ?By measuring the voltage across their emitter resistors you can calculate the current through them annd?see what is happening, or else see which ones are getting HOT.? ??

On Amazon, there are multiple sources for 2219a's and they aren't that expensive.....

One of the things I try to always put together now,....is some form of polarit?protection on anything expesnsive that I buy.? ? ?I built a mosfet protection circuit and did a printed circuit board which is shared as a project on ? ? Lots in our group have used it.? ? I put it on EVERY radio down at our EOC becuase?it is SO EASY to damage radios when people are stressed out or tired.

Let usknow?how it goes!

Gordon KX4Z

On Sat, Mar 1, 2025 at 5:33?PM Michael Bales via <mikebales73=[email protected]> wrote:

Not sure, I must have inadvertently applied 12v somewhere I shouldn't have. Either way, I doubt that I can check any further damage until I replace D7. Probable worst case would be having to drop $40 on new 2n2219s.

-------- Original message --------

From: "Gordon Gibby KX4Z via " <docvacuumtubes=[email protected]>

Date: 3/1/25 5:19 PM (GMT-05:00)

To: [email protected]

Subject: Re: [BITX20] reviving my sbitx v3

Michael, how did D7 get damaged?? ?Was reverse polarity applied to the radio at some point?? ?that would be the most likely way to damage D7 and it would have serious impacts on some of the other components, such as the 4 transistors in the driver section.? ?So what do you know about how D7 got damaged???? it isthere?to protect somewhat against?reverse polarity

Gordon?

On Sat, Mar 1, 2025 at 3:01?PM Michael Bales via <mikebales73=[email protected]> wrote:

So, after the diagnosis and repair of the power group components, Q9,Q10,Q101,R5,R6 (all replaced), on power up, +12v drops to under 2v and the area around the Q12-15 group heats up quickly. I did note that D7 was basically shot, continuity in both directions. What are my most likely culprits at this point?

--

Mike - K8MCB?

--
Mike - K8MCB?

--
Mike - K8MCB?