Re: Can you use multiple outputs of SI5351 in a high performance VNA?
Hi Erik. I'm trying to make an antenna analyzer based on the si5351 but i can't accomplished. I'm using a sa612 mixer. I have to scroll in an entire frecuency range. For example 50 Mhz to 100 Mhz. I can't accomplished. I need that one output stay 1 khz higher than the other output and this can't be done yet. Can someone help me? I make a firmware for the pic18f2550. I changed the FI(intermediate frecuency) for example 10.7 Mhz.(one output at 50 Mhz and the other in 60.7Mhz) When i measured with an spectrum analyzer the 60.7 Mhz looks like 60.001Mhz. I don't know what 's wrong with my firmware
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
Dave,
there is a slight problem because I can't find TFT-eSPI version 2.2.16.
This version is also not available on github:
So far, 2.2.6 has been required
Any other ideas?
--
Gyula HA3HZ
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
Dave,?
Don't have the rotary encoder installed, and had a compile error
in simpleSA.ino at about line 1464: encoderButton.check().? Added
#ifdef USE_ROTARY before the statement, and #endif after it, and
all was well.?
The wi-fi connection looks much more stable too.?
Jim - G3ZQC
On 02/12/2020 08:46, m0wid wrote:
toggle quoted message
Show quoted text
I used the green SI4432 modules and found that each module is
fitted with a small capacitor on the clock line.? I had to remove
that capacitor from one module to get reliable operation, but
maybe it is marginal.
The latest version of code is attached, still in test.? Please
report any issues.? This version includes some new marker
functions, support for a rotary encoder, sorts out the colour
issues for later versions of TFT-eSPI library, and also fixes
(more of a work around really) a problem where the 5th harmonic of
the LO interferes with WiFi operation.
A new library is needed - AceButton, available via the Arduino
library manager, and you will also need to download the data files
to your simpleSA to update the webpage scripts.
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
I used the green SI4432 modules and found that each module is fitted with a small capacitor on the clock line.? I had to remove that capacitor from one module to get reliable operation, but maybe it is marginal.
The latest version of code is attached, still in test.? Please report any issues.? This version includes some new marker functions, support for a rotary encoder, sorts out the colour issues for later versions of TFT-eSPI library, and also fixes (more of a work around really) a problem where the 5th harmonic of the LO interferes with WiFi operation.
A new library is needed - AceButton, available via the Arduino library manager, and you will also need to download the data files to your simpleSA to update the webpage scripts.
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
Hello Dave,?
thank you very much for the quick response. Setting an offset of 500kHz resolved the issue with tracking generator. It is still a bit unstable, as it stops to work after a few scans, but I will reduce the SPI speed, which hopefully will resolve that problem.?
For the generator mode of the TG I still do not get an output signal. Not sure if it works for you.?
--
Joerg, ex-DB2OO
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
Hi Joerg, well done on the build.
The tracking generator is in the code.? There is a bug in version 0.11 that is fixed in version 0.12 which is close to release, but I don't think that is the problem here.
In the tracking menu there is an option for offset (there is also a console command) to offset the tracking generator IF from the SA IF.? If both IF are the same then the signal from the TG IF gets through into the SA receiver, which is what you are seeing, I think.??
I have a bodged build, not the VK3PE boards, but with the offset at zero I get similar results to you.? Set the offset to say -800000 and you should see a huge improvement.? You can play around and see what works best for you.? I have my SA IF set quite high (434.1MHz) to reduce the LO breakthrough at low frequencies, if you stay with an IF in the middle of the SAW filter range (433.92MHz) then something like -500,000 may work out better.? Positive values are also OK.? If you go too far then you will fall outside the range of the SAW filter on the TG board (if fitted), though this could possibly be to some advantage in reducing the signal level from the TG which really needs some attenuation to avoid overloading the receiver.
simpleSA version 0.12 will include support for an encoder to aid navigation and some additional marker features.
Can you confirm what version of the TFT-eSPI library you have installed?? The gain trace axis scale comes out green on my version, though I don't have the latest version of TFT-eSPI installed yet.
73
Dave M0WID
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Re: File /WA2FZW - M0WID ESP32 - ILI9341 Version of the TinySA/simpleSA_0_11.zip uploaded
#file-notice
Hello John P., thank you very much for all your work on the SimpleSA. I have finally built one using Glen's, VK3PE's, board designs and it is working very well, if you are just putting in one RF board. Yesterday I have finally fully assembled a second RF board for the tracking generator, done all the modifications described on carnut.info, i.e. cut the tracks on the main RF boards, added the connection to D2, shortened R31 etc.. It starts up correctly and also displays "Tracking IF initialized" and "Tracking LO initialized". In the "Sweep Low" mode it works fine, as long, as I am not enabling tracking through "Output/Tracking/On". As soon as I do that, the ground noise line will move from -80dBm to -50dBm, even if the input is just connected to the reference output or just open. It is the same, if I connect the input to the output of TG board, just a bit more ground noise around -50dBm. Setting "Output/Tracking/Generator" with Frequency set to 35MHz again, does not show an output signal, but just a pretty clean ground noise line at -50dBm.  Could it be, that the tracking generator functionality has not yet been fully implemented in the simpleSA_0_11 code? -- Joerg, ex-DB2OO
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Re: Can't Install TinySA-saver
#tinysa
Thanks Gyula, Your remark put me on the right track for another search. For anyone's reference: If you do a :
pip3 install pyqt5==5.14
before the python3 -m pip install . the procedure works perfectly. 73, Hans On Thu, Nov 19, 2020 at 09:55 PM, Gyula Molnar wrote:
I suggest you seek help from the nanovna-users group.
Booting the nanovna-saver under python under Debian, someone else had a problem with that.
Use the "Search" button in the area above the messages.
--
73, Gyula HA3HZ
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Re: Can't Install TinySA-saver
#tinysa
I suggest you seek help from the nanovna-users group.
Booting the nanovna-saver under python under Debian, someone else had a problem with that.
Use the "Search" button in the area above the messages.
--
73, Gyula HA3HZ
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Maybe slightly OT:
I'm trying to install the TinySA-saver utility on Debian 10, but I'm getting an error I can't solve.
I cloned the code from and following the instructions, I did
python3.7 -m pip install .
This greets me with an error
?? Complete output from command python setup.py egg_info:
??? Traceback (most recent call last):
????? File "<string>", line 1, in <module>
????? File "/usr/lib/python3.7/tokenize.py", line 447, in open
??????? buffer = _builtin_open(filename, 'rb')
??? FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-veacg6g9/PyQt5/setup.py'
???
??? ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-veacg6g9/PyQt5/
All required packages are installed (even the ones that you 'may' need.
Suggestions, anyone, please ?
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Re: Arduino based component tester
AVRs are usually speced to 20MHz,? a 25% improvement over a
standard Arduino
On 11/8/2020 1:32 PM, Dragan
Milivojevic wrote:
toggle quoted message
Show quoted text
If I remember correctly 32MHz but that was with an
oscillator
not a crystal. Going that high will introduce other issues,
search
on arduino forums ...
If
changing the resonator (crystal in Arduino TINY units) how
high can we?
go??
I have tried with 27 MHz but some AVR processors do not
like to run?
that
fast.
_._
The same way we used to overclock the CPUs in the
386 era, you replace the crystal :)
Question
is how one goes about overclocking an Arduino??
There?
seems
to be no obvious way to change the internal
clock rate from?
being
tied tightly to the crystal frequency.? Some
more adept processors?
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Re: Arduino based component tester
ATmega328p as found on Nano boards are only spec’d to 20MHz. ?The Arduino? boot loader needs to be modified and things like delay() won’t be right. 73, Gary WB6OGD?
toggle quoted message
Show quoted text
On Nov 8, 2020, at 10:33 AM, Dragan Milivojevic <d.milivojevic@...> wrote:
? If I remember correctly 32MHz but that was with an oscillator
not a crystal. Going that high will introduce other issues, search on arduino forums ...
If changing the resonator (crystal in Arduino TINY units) how high can we? go?? I have tried with 27 MHz but some AVR processors do not like to run? that fast.
_._
The same way we used to overclock the CPUs in the 386 era, you replace the crystal :)
Question is how one goes about overclocking an Arduino?? There? seems to be no obvious way to change the internal clock rate from? being tied tightly to the crystal frequency.? Some more adept processors?
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Re: Arduino based component tester
If I remember correctly 32MHz but that was with an oscillator
not a crystal. Going that high will introduce other issues, search on arduino forums ...
If changing the resonator (crystal in Arduino TINY units) how high can we? go?? I have tried with 27 MHz but some AVR processors do not like to run? that fast.
_._
The same way we used to overclock the CPUs in the 386 era, you replace the crystal :)
Question is how one goes about overclocking an Arduino?? There? seems to be no obvious way to change the internal clock rate from? being tied tightly to the crystal frequency.? Some more adept processors?
|
Re: Arduino based component tester
If changing the resonator (crystal in Arduino TINY units) how high can we? go?? I have tried with 27 MHz but some AVR processors do not like to run? that fast.
_._
The same way we used to overclock the CPUs in the 386 era, you replace the crystal :)
Question is how one goes about overclocking an Arduino?? There? seems to be no obvious way to change the internal clock rate from? being tied tightly to the crystal frequency.? Some more adept processors?
|
Re: Arduino based component tester
The same way we used to overclock the CPUs in the 386 era, you replace the crystal :)
Question is how one goes about overclocking an Arduino?? There? seems to be no obvious way to change the internal clock rate from? being tied tightly to the crystal frequency.? Some more adept processors?
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Re: Arduino based component tester
There have?been some on-line comments about settling time of the? Arduino ADC.? Simple way of compensating seems to be to sample? twice and use the second sampling.
Question is how one goes about overclocking an Arduino?? There? seems to be no obvious way to change the internal clock rate from? being tied tightly to the crystal frequency.? Some more adept processors? have internal clock multipliers that can be controlled by software, but? this does not seem to be the case with the relatively simple AVR? processor architecture?? Am I missing something here?
Arv _._
On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious.? The thing is almost instantaneous as it is.? The slow part is connecting the DUT.
Thanks, ? ? ? ? ? larry
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Re: Arduino based component tester
Hi Larry,
My comment was a little bit of humor to point to power consumption increase and heat with overclocking. Sometimes that can be troublesome so just a reminder to not step in something. I see that there is one, more serious reply from Dragan.
73,
Bill KU8H
bark less - wag more
toggle quoted message
Show quoted text
On 11/8/20 8:21 AM, Lawrance A. Schneider wrote: On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious. ?The thing is almost instantaneous as it is. ?The slow part is connecting the DUT.
Thanks, ? ? ? ? ? larry
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Re: Arduino based component tester
On Sun, Nov 8, 2020 at 07:43 AM, Bill Cromwell wrote:
It keeps your coffee mug warmer?
My question was serious. ?The thing is almost instantaneous as it is. ?The slow part is connecting the DUT. Thanks, ? ? ? ? ? larry
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Re: Arduino based component tester
Resolution in C&L measurements when using the sampling ADC method.
It's in the linked document ...
On Fri, Nov 6, 2020 at 08:53 PM, Dragan Milivojevic wrote:
even better when modded and overclocked
What do you gain by overclocking it?
Thanks, ? ? ? ?larry
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Re: Arduino based component tester
It keeps your coffee mug warmer?
73,
Bill KU8H
bark less - wag more
toggle quoted message
Show quoted text
On 11/8/20 12:13 AM, Lawrance A. Schneider wrote: On Fri, Nov 6, 2020 at 08:53 PM, Dragan Milivojevic wrote:
even better when modded and overclocked
What do you gain by overclocking it?
Thanks, ? ? ? ?larry
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Gyula Molnar