Re: V6 TFT ADAPTOR by G8DJM
Dale
I did this as a quickie using the 5 for 99c or so Chinese premade modules, like these.
There's no reason why you cant just roll your own though, I'm not doing this as a project, more to help on how to get out of this predicament with the displays.
Regards David S
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Re: ubitx #v6 Screen Speed Mod, and interrupt driven encoder wheel mod
#v6
I too created a fork, not with Smitty's additions, but one that uses PlatformIO instead of the Arduino IDE. You can check out the code here: The changes are pretty minimal from the existing Arduino IDE sketch:
- Create a new PlatformIO project by creating a directory and then using "pio init" in it.
- Update the platform.ini with the board details
- Move the .ino to be "main.cpp"
- Added "Arduino.h" to the includes of main.cpp
- Removed glcdfont.c as everything gets compiled
- Backup the existing firmware
- Erase with "pio erase"
- Compile and flash with "pio run -t upload"
I really like PlatformIO because of the build automation being so nice and not having to click on menus and such. Besides installing the PlatformIO binaries, there isn't much too it, although I can see people not wanting to mess with it, though. I did this for my own sanity and wanted to pass the work along, hopefully it helps. Of course, using this is much easier than the above:
- git clone?
- git checkout?pio_pdq_gfx_update
- avrdude -p m328p -c arduino -P /dev/ttyUSB0 -b 57600 -U flash:r:flash_backup_file.hex:i? # backup
- pio erase
- pio run -t upload
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Re: Very low ssb output for v5
To answer your request for the voltage measurements, You can use the v4 values for the SSB transmit side, as there are only minor differences.? The audio receive and bandpass filters are the significant differences, with only the audio section being able to be measured with a volt meter. There is a change in the IF/SSB filter frequencies, however this again will not show up in voltage measurements. /g/BITX20/files/VU2ZAP/uBitx4%20voltages.xlsxTo help, download the v4 and v5 schematics to compare. If you compare the two, you will see that the Q6 mic preamp sections are the same. The most likely issue for low SSB transmit power after the BFO calibration is the mic gain.? There have been varying reports on the supplied mic performance.? Most have required a preamp to boost the signal.? On the three that I have built, I have found the provided mic to be inadequate to drive to full power without distortion.? Hopw\e this helps and have fun! 73 Evan AC9TU
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Re: Very low ssb output for v5
I would start with a BFO calibration.? The BFO will affect both receive AND SSB transmit, as the 11.092 MHz crystal filter and BFO need to be aligned in both directions.
The best way that I have found to set the BFO is to tune to a clear frequency with static, then use HF Signals web page to "listen" to the audio.? You would then go to the BFO calibration setting and adjust to get the "plateau" between the red lines.
Be sure to mark down the new setting before setting.? There is no way to save what is the current, other than to do a factory reset.
CAUTION:? The v5 stock firmware will go into transmit at 10 MHz if you go to the master calibration setting.? This should only be done with a dummy load connected.? Unfortunately, a dummy load may not generate enough white noise ("static") to do the BFO calibration.? If the rig does go into transmit, power down immediately.? Do not save the setting, as it will go back to a default that will not be correct.? Just be sure you are in the BFO calibration and you will be fine.
Note: Every time you go into a calibration, the old value is overwritten, and I do not know of a way to go back to a prior setting.? This is a limitation of the v5 stock firmware.? One of the reasons I went to the KD8CEC firmware, as there is a separate Memory Manager program that can be used to set and save the values, including a save to file option.
Above are my experiences, others may be different. Please use with caution and at your own risk.
73
Evan
AC9TU
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Re: Very low ssb output for v5
Hi Thomas,
The schematic can be found here: . It lists all of the test points etc, so you should be able to find all the points worth checking :)
Reed
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Very low ssb output for v5
CW output appears to be fine. The mic and its connection is not the problem. The info I need is a table of of test point voltages with the radio settings appropriate to measuring them. I have seen references to such a table but cannot find it. I also need some direction to help visually inspect the areas of the board that may be causing this problem.
The audio is a little tinny but acceptable. I switched the provided LM386 with a known good National Semiconductor LM386N-1 which improved weak audio. I feel that there is a fault in the board or a bad component, I have no access to a scope and/signal generator.
Thanks in advance for your help.
Tom? AB6TN
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Re: V6 TFT ADAPTOR by G8DJM
David, what IC is used in the schematic?? I have a few of those TFT displays that will need the level shifter.? Thanks, Dale
On Sun, Jan 12, 2020 at 4:07 PM < mm0bef@...> wrote:
Thanks again for this david. This should fix most of our problems. Great work.
Best Regards
Brian_____MMOBEF
_______________________________________
David's original message:
?David S
9:29pm???
Hi all.? A belated Happy New Year. There's been quite a few requests for help with the TFT for the V6, the ones available in the wild are hit and miss.? I've now got 5 of the 2.8 TFT obtained from 3 vendors over the last year or so.? They seem to be the worst thing out at raising ones blood pressure with frustration trying to get them to operate correctly.? Of the original 3 only 2 will ok correctly with the Blue Pill yet all of them are fine with a Teensy 3.2. I have also been watching with interest progress of the code for the V5 and then the V6 with a view to upgrading my early V3, more frustration with both types of display.? The TFT would be a great addition, so that's the way I'm going,? hence ordering some new versions. I've spent a troubled few days trying to coax one of the TFT's no go, the code assembles loads correctly,the display is wired up ok, I know it functions with the Blue Pill so back to basics.
I tested the TFT with a level converter, easy to do and magically it functions. So her's my thoughts to share with others it may help. You can find the schematic here??/g/BITX20/files/V6%20TFT%20Adapter
This is intended hopefully to assist with the problems encountered when trying to obtain a suitable TFT to use with the Ubitx V6 code.? Very many of these displays available from China are advertised as 3.3/5v (operation ?), they will run with either a? 3.3 or 5v supply but will only work with 3.3v logic signals. When wired as in V6, and running the code, the display will show only a blank white screen.
?
The idea is that this should act as an interface directly between the lead from the raduino and the actual display in use, no messing about with your Raduino.
Hope this is helpful to someone.
David S
--
--
Dale Hardin
KS4NS
Elberta, AL
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Re: Relative Power indication on Nextion display
Dan,
I¡¯m getting inconsistent results on the receive side as well. Sometimes it works, sometimes not. I wonder if there is a code path that latches The A7 port - to zero during transmit, high during receive.?
Mike
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Re: V6 TFT ADAPTOR by G8DJM
Some of these displays dont play well with the onboard 3.3v regulator. Bypassing it and using an external 3.3v regulator eliminates any potential problems there.
Regards
Brian_____MM0BEF
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Thanks Gary,
David has fixed the error. Some of these displays dont play well with the onboard 3.3 regulator. Bypassing it and using an external 3.3v regulator eliminates any potential problems there.
Regards
Brian_____MM0BEF
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David,
Looks like you have the L78L33 regulator wired incorrectly in the schematic.? You want Vin from 5V Raduino to generate 3.3V for the LV side of the level shifter.
Why supply the display module with 3.3V derived from the same 100mA regulator instead of using the? display board regulator?? I'd understand if trying to beef it up and have better cooling.
The level shifter from 3.3V to 5V (raduino) is not needed as the VOH meets VIH requirements.
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Re: V6 TFT ADAPTOR by G8DJM
And thanks from David G8DJM.
Regards
Brian_____MM0BEF
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Thanks for suggestion. Im going to use the logic level shifter suggested by David G8DJM with a 3.3v regulator.
I tried 1k in series with the data lines but that was not good enough so i was going to try voltage divider with 4k7 and 10k resistors but Davids suggestion is better for me
Regards
Brian_____MM0BEF
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Re: V6 TFT ADAPTOR by G8DJM
Dont know how i missed that. Thanks Terry.
Regards
Brian_____MM0BEF
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Re: V6 TFT ADAPTOR by G8DJM
Re the schematic, the 3.3v regulator is shown wired backwards.
--
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Thanks again for this david. This should fix most of our problems. Great work.
Best Regards
Brian_____MMOBEF
_______________________________________
David's original message:
?David S
9:29pm???
Hi all.? A belated Happy New Year. There's been quite a few requests for help with the TFT for the V6, the ones available in the wild are hit and miss.? I've now got 5 of the 2.8 TFT obtained from 3 vendors over the last year or so.? They seem to be the worst thing out at raising ones blood pressure with frustration trying to get them to operate correctly.? Of the original 3 only 2 will ok correctly with the Blue Pill yet all of them are fine with a Teensy 3.2. I have also been watching with interest progress of the code for the V5 and then the V6 with a view to upgrading my early V3, more frustration with both types of display.? The TFT would be a great addition, so that's the way I'm going,? hence ordering some new versions. I've spent a troubled few days trying to coax one of the TFT's no go, the code assembles loads correctly,the display is wired up ok, I know it functions with the Blue Pill so back to basics.
I tested the TFT with a level converter, easy to do and magically it functions. So her's my thoughts to share with others it may help. You can find the schematic here??/g/BITX20/files/V6%20TFT%20Adapter
This is intended hopefully to assist with the problems encountered when trying to obtain a suitable TFT to use with the Ubitx V6 code.? Very many of these displays available from China are advertised as 3.3/5v (operation ?), they will run with either a? 3.3 or 5v supply but will only work with 3.3v logic signals. When wired as in V6, and running the code, the display will show only a blank white screen.
?
The idea is that this should act as an interface directly between the lead from the raduino and the actual display in use, no messing about with your Raduino.
Hope this is helpful to someone.
David S
|
Excelent work and much appreciated. Been really struggling with this on a V5 and this will fix it.
Thanks again
Best Regards
Brian_____MM0BEF
|
Hi all.? A belated Happy New Year. There's been quite a few requests for help with the TFT for the V6, the ones available in the wild are hit and miss.? I've now got 5 of the 2.8 TFT obtained from 3 vendors over the last year or so.? They seem to be the worst thing out at raising ones blood pressure with frustration trying to get them to operate correctly.? Of the original 3 only 2 will ok correctly with the Blue Pill yet all of them are fine with a Teensy 3.2. I have also been watching with interest progress of the code for the V5 and then the V6 with a view to upgrading my early V3, more frustration with both types of display.? The TFT would be a great addition, so that's the way I'm going,? hence ordering some new versions. I've spent a troubled few days trying to coax one of the TFT's no go, the code assembles loads correctly,the display is wired up ok, I know it functions with the Blue Pill so back to basics.
I tested the TFT with a level converter, easy to do and magically it functions. So her's my thoughts to share with others it may help. You can find the schematic here??/g/BITX20/files/V6%20TFT%20Adapter
This is intended hopefully to assist with the problems encountered when trying to obtain a suitable TFT to use with the Ubitx V6 code.? Very many of these displays available from China are advertised as 3.3/5v (operation ?), they will run with either a? 3.3 or 5v supply but will only work with 3.3v logic signals. When wired as in V6, and running the code, the display will show only a blank white screen.
?
The idea is that this should act as an interface directly between the lead from the raduino and the actual display in use, no messing about with your Raduino.
Hope this is helpful to someone.
David S
|
Hello,
This email message is a notification to let you know that the following files have been uploaded to the Files area of the [email protected]
group.
Uploaded By:
David S <dsatn04@...>
Cheers,
The Groups.io Team
|
He has the same results either using a keyer or a straight key, although it isn't clear to me whether it is happening with the internal keyer and a set of paddles as opposed to an external keyer. He describes it as having to "turn it on" by sending a dit or a dah (they result in the same truncated did on the output) and then when the relay is engaged sending is normal. it sounds like it is sending something as the transmit relay engages, and again when it disengages, so even if he toggled the relay on before sending, he would get a burst of RF just like he does when it times out at the end.? I'll suggest he play with the CW delay, but it seems to output that RF whenever it times out, anyway.
He is a long-time CW op and currently an NCS on a CW traffic net.
=Vic=
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Dale Hardin KS4NS
Vic WA4THR