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Re: sBitx printed case

 

I sent the files to a friend of mine what has a 3D printer and he said that it was warping and wasn't printing for him. Would someone out there be willing to print me a case or is there a company that could print one for me??
I really like the sun shade, it is a great idea

--
'72
Aaron?
Re: Impedance calculation rule crystal filter

 

Ugg...memories of circuit analysis in college? have assaulted my brain! I bet a computer can get the answers faster than me. Gotta get back to changing my tractor tire...enjoy.

Scotty WD4PYT?

On Mon, Mar 25, 2024, 2:55 PM Gerard <kabupos@...> wrote:
Hello,
?
In the Ubitx V6 documentation, it is noted that the 45 Mhz filter must see an impedance of 500 Ohm on each side. See on?
--->
"The 45 MHz filter needs 500 ohms termination impedance on both ports.
?We use simple L network to match the filter to either ends of the front-end and the 2nd IF mixer."

Knowing for example that the 45MHZ filter model 45M15F has a characteristic 650 ohm/ 3 PF, what is the calculation rule for the capacitor value and inductance on each side of the filter. The capacitor 0.1?F? being considered began in short circuit at this frequency.

Please complete the calculation? rule of these 2 components, if the filter is different with value 1.5KOhm and 2PF.
The rule is:....so
Values of C212, C214? and L5, L7 are....if filter 1.5KOhm / 2PF
Thanks
Impedance calculation rule crystal filter

 

Hello,
?
In the Ubitx V6 documentation, it is noted that the 45 Mhz filter must see an impedance of 500 Ohm on each side. See on?
--->
"The 45 MHz filter needs 500 ohms termination impedance on both ports.
?We use simple L network to match the filter to either ends of the front-end and the 2nd IF mixer."

Knowing for example that the 45MHZ filter model 45M15F has a characteristic 650 ohm/ 3 PF, what is the calculation rule for the capacitor value and inductance on each side of the filter. The capacitor 0.1?F? being considered began in short circuit at this frequency.

Please complete the calculation? rule of these 2 components, if the filter is different with value 1.5KOhm and 2PF.
The rule is:....so
Values of C212, C214? and L5, L7 are....if filter 1.5KOhm / 2PF
Thanks
Re: Low transmit power using wsjtx and jtdx #sBitx

 

AE9J,

The hw_settings.ini file is in the data folder in the sbitx folder
/home/pi/sbitx/data

I suggest copying the entire folder as your customization settings and the log file are also stored there.

73
Evan
AC9TU
Re: Low transmit power using wsjtx and jtdx #sBitx

 

So where is this "hw_settings.ini" file?

Does this file get changed by the "txcal" command?

I guess I should copy that file off somewhere before I even think about changing it.

Thanks.
Re: sBitx printed case

 

On Sun, Mar 24, 2024 at 08:51 PM, Mark Hatch wrote:
But it is great benefit to others!

Agreed!

Also, I found the following on the sbitx group on Facebook that I think will be of interest to POTA operators:




?

Thanks to Jared for sharing!
?
--
Regards,
Dave, N1AI
Re: sBITX 64Bit Pi Image Available #sBitx

 

And complementing this solution, I also remove the fake-hwclock ugly workaroung, that is installed by default:

|apt-get remove fake-hwclock|

Cheers,
Rafael

On 3/25/24 10:52, Rafael Diniz wrote:
It is just a matter of loading the appropriate overlay to make Linux use the installed RTC as system RTC.

I use:

|dtoverlay=i2c-rtc-gpio,ds1307,bus=2,i2c_gpio_sda=13,i2c_gpio_scl=6
|

Then wipe the userland I2C BB code (and use kernel I2C interface). If you need a reference:


Cheers,
Rafael

On 3/25/24 01:38, Peter VK3PYE wrote:
On Sat, Mar 23, 2024 at 07:37 PM, HA3HZ wrote:

??? Now I'm only interested in the fact that there is a built-in RTC
??? and it is not visible with the timedatectl command.

Hi Gyula, according to the info at "sbitx.net", the RTC is only accessible via the sbitx program.? Have a read here : Syncing the Real time clock ¨C sBitx.net <>

So, it seems that the Raspberry Pi cannot access the RTC.? Sad really, as the RTC should be keeping the RaspPi clock working while it is off.

--
Pete VK3PYE


OpenPGP_signature.asc
OpenPGP_signature.asc

Re: sBITX 64Bit Pi Image Available #sBitx

 

It is just a matter of loading the appropriate overlay to make Linux use the installed RTC as system RTC.

I use:

|dtoverlay=i2c-rtc-gpio,ds1307,bus=2,i2c_gpio_sda=13,i2c_gpio_scl=6
|

Then wipe the userland I2C BB code (and use kernel I2C interface). If you need a reference:


Cheers,
Rafael

On 3/25/24 01:38, Peter VK3PYE wrote:
On Sat, Mar 23, 2024 at 07:37 PM, HA3HZ wrote:

Now I'm only interested in the fact that there is a built-in RTC
and it is not visible with the timedatectl command.

Hi Gyula, according to the info at "sbitx.net", the RTC is only accessible via the sbitx program.? Have a read here : Syncing the Real time clock ¨C sBitx.net <>

So, it seems that the Raspberry Pi cannot access the RTC.? Sad really, as the RTC should be keeping the RaspPi clock working while it is off.

--
Pete VK3PYE

OpenPGP_signature.asc
OpenPGP_signature.asc

Re: sBITX 64Bit Pi Image Available #sBitx

 

JJ,

If the address of the RTC? is 68 without the sBitx program running, you should be able to sync the RTC to the Pi. That doesn't look like the RTC address.
--
Jerry Ponko, AC9NM
Re: sBITX 64Bit Pi Image Available #sBitx

 

I wish that the sBitx had used the standard I2C overlays instead of bit-banging. Back when the sBitx first appeared, I was not convinced that the WM8731 codec and the Si5351A could not work together on a Pi-4 connected to the same I2C bus, So I built my own WM8731 module board according to the manufacturer's datasheet and connected it to the Raspberry Pi 4 along with a Si5351 module and had them both working on the same bus. The date sheet also says it can be controlled by the SPI bus or I2C. I used the standard 12.288MHz crystal? on the codec as well and not the 12MHz as used in the sBitx. If I remember correctly, I used a rotary encoder and some python library code to control the Si5351A to change frequency while listening to some internet music coming from the WM8731 headphone output. I didn't detect any problems with either device. I've been tempted to build my own version of the sBitx hardware without bit-banging or other workarounds but I don't want to deal with all the code changes plus I'd get rid of WiringPi as well. IMHO, the correct way to implement the RTC would have been to make it a system device and then have the sBitx software just read the system time. I'm more familiar with programming MCUs then the Raspberry Pi SBC but when I program a MCU, I try to use standard methods and libraries and if a device doesn't work properly, try a different library or device and not reinvent the wheel.?

So now we have a RTC that's not really a system RTC unless you run the sBitx software.

--
Jerry Ponko, AC9NM
Re: sBITX 64Bit Pi Image Available #sBitx

 

On Sun, Mar 24, 2024 at 08:52 PM, Jon / W2JON wrote:
Does this adafruit article bring any useful?information?
Seems that this is the same / similar implimentation.
Thanks for the link, Jon. This is really good info. I started to play around with some of the commands and may go further to see if I can use it in the 64bit build.

This is a good way to test the RTC and see if it is known on the I2C bus. UU means the driver is loaded and working.




-JJ

Re: sBITX 64Bit Pi Image Available #sBitx

 

Does this adafruit article bring any useful?information?

Seems that this is the same / similar implimentation.

On Sun, Mar 24, 2024 at 9:38?PM Peter VK3PYE <vk3pye@...> wrote:
On Sat, Mar 23, 2024 at 07:37 PM, HA3HZ wrote:
Now I'm only interested in the fact that there is a built-in RTC and it is not visible with the timedatectl command.
Hi Gyula, according to the info at "", the RTC is only accessible via the sbitx program.? Have a read here :?

So, it seems that the Raspberry Pi cannot access the RTC.? Sad really, as the RTC should be keeping the RaspPi clock working while it is off.
?
--
Pete VK3PYE

Re: sBITX 64Bit Pi Image Available #sBitx

 

On Sat, Mar 23, 2024 at 07:37 PM, HA3HZ wrote:
Now I'm only interested in the fact that there is a built-in RTC and it is not visible with the timedatectl command.
Hi Gyula, according to the info at "sbitx.net", the RTC is only accessible via the sbitx program.? Have a read here :?

So, it seems that the Raspberry Pi cannot access the RTC.? Sad really, as the RTC should be keeping the RaspPi clock working while it is off.
?
--
Pete VK3PYE
Re: sBITX 64Bit Pi Image Available #sBitx

 

On Sat, Mar 23, 2024 at 03:21 PM, JJ - W9JES wrote:
You are a genius! This was the fix or Band-Aid for the time dilemma.
Good job JJ and Jerry, many thanks for your ongoing work with this amazing little rig.

I have applied the update to your 64bit beta2 version JJ, and can confirm that it works, and to quote you: "This was the fix or Band-Aid for the time dilemma."

I dual boot my sbitx_v3, and so I tried the 32bit "Buster" version 3.02 (as supplied by HF Signals) and interestingly, it still has that bit of code [ return ?(millis()/1000l) + time_delta; ]?in there, and yet the sbitx UTC clock is correct.? Hmmmm .... [scratching my head]

Anyway, it's working and that is what matters.
--
Pete VK3PYE
Re: uBITX display on/off

 

I am with Evan here and would just buy a sBitx.


I am having a lot of fun enhancing and extending KD8CEC for picos and teensy, ?but after buying my own sBitx, I don¡¯t see my work ever catching up with a sBitx. It is a great radio! So I don¡¯t see my work ever being a reasonable upgrade path for ubitx owners. ?

I am going to continue working on kd8cec, and will make available Raduinos designs ?for pico and teensy. ?But doing so for my own fun and on my timeline.?

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
Re: sBitx printed case

 

Excellent! ?Will update both Thingiverse and GitHub. Might be a few days as I don¡¯t have access to my development system. But it is great benefit to others!

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
Re: uBITX display on/off

 

The uBitx V6, with Nextion display and KD8CEC software, does have a screen saver mode. This is accessed via the Control Menu, LCD button. The LCD Setup screen allows setting display brightness, and also provides the option to have the screen Always On, or blanked after 3, 10 or 20 minutes. It seems like that should satisfy your friend's screen blanking requirement.

I think the KD8CEC software utilizes some computing power inside the Nextion display for some additional functions (not only display related). Therefore, you might unexpectedly lose some important functions by disconnecting the +5V power to the display.
Re: sBITX 64Bit Pi Image Available #sBitx

 

Thank you!

Scotty WD4PYT?

On Sun, Mar 24, 2024, 5:13 PM JJ - W9JES <w9jes@...> wrote:
I've updated the CW macro display in the GUI. While it's not perfect, it's an improvement over having many of the macro buttons missing. Frankly, the default GUI leaves much to be desired and really needs a complete overhaul, but that's a task for another time.

Here are the commands you'll need to run to update your version on my Beta2 build from Terminal:


pi@sbitx:~/sbitx $ git stash
pi@sbitx:~/sbitx $ ./update?






-JJ
Re: sBitx Starting Error

 

That could be. How are you powering the Pi? For the final build you should use a buck converter set to about 5.4 volts and power the pi through the GPIO pins.? With that, I had no problem picking off the 3.3 volts from the pi on board regulator.??

After having some stability problems with the SI-5351 clocks with Farhan:s advice I moved the? SI 5351 off of the digital board and on to the analog board and powered it with its own voltage regulator.

To avoid ground loops there should be one and only one ground path to the digital board and that is going back to the input 13.4 volt supply.? So when you're done the only connection between the pi and the SI-5351 will be the I2C lines.

Yes you can wait on changing out the crystal who are you work on the analog circuit.

73, Dean




73,
Dean
Re: sBITX 64Bit Pi Image Available #sBitx

 

I've updated the CW macro display in the GUI. While it's not perfect, it's an improvement over having many of the macro buttons missing. Frankly, the default GUI leaves much to be desired and really needs a complete overhaul, but that's a task for another time.

Here are the commands you'll need to run to update your version on my Beta2 build from Terminal:


pi@sbitx:~/sbitx $ git stash
pi@sbitx:~/sbitx $ ./update?






-JJ
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