Hi Bob, ?????????? ive found the same on my V6 and am very pleased with it now ive eventually got into the settings to change it from straight to paddle key .now on the hunt for a nice add on cheapishadjustable external cw filter.Dave G0AYD..
On Mon, 13 Jan 2020 at 16:52, Bob Bennett via Groups.Io <bobsmacbox= [email protected]> wrote: In my case, using a dual paddle, it takes about a second for the initial dit or dah. After that operation os OK as long as you maintain your rhythm. If your pause is too long, the next dit or dah is delayed that second again.?
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Bob
NZ2Z
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Re: Ubitx V6 Nextion 2.8" Display Modification
I don't have a good answer for why he didn't base the v6 software on the CEC version, but the screen choice is absolutely cost driven. Nextion screens, while not all that expensive, are MUCH more expensive than the TFT that comes in the kits, which keeps costs lower.? I think it's the right choice.
Reed
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me too and thanks for the help
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In my case, using a dual paddle, it takes about a second for the initial dit or dah. After that operation os OK as long as you maintain your rhythm. If your pause is too long, the next dit or dah is delayed that second again.?
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Bob
NZ2Z
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Re: Very low ssb output for v5
Evan, please study thevpost? PA? lpf for 40m band. Let us take sch values as correct. Tro take out the coils one by one? ( you can do without removing the board) and check for inductance and do some trimming. The 40m band power increases. All the best Sarma vu3zmv
On Mon, 13 Jan 2020, 10:57 am Evan Hand, < elhandjr@...> wrote: 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.xlsx
To 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: Ubitx V6 Nextion 2.8" Display Modification
One more note. In the CEC setup on the display you and lower the brightness of the display to further lower the current draw. Doing this I¡¯m now down to just 200ma. Also you can set a timer o turn on the back light after 3 minutes. With the backlight off I¡¯m seeing 170ma of current draw (this is measured at the power plug of the V6) again with power (5v ) removed from the Nextion the current drops to 150ma.
With all the great work that KD8CDC has done I wonder why the V6 uBitx just didn¡¯t go with the 2.8 Nextion and the CEC firmware? It¡¯s just such a nice and more complete setup with a better foundation to continue to build on version recreating the wheel.
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On Jan 11, 2020, at 6:19 PM, bill richardson via Groups.Io <ng1p.bill@...> wrote:
? I did this mod to my V6 and with the Nextion display my current draw dropped from 350ma to 250ma (TFT draws 100ma more!) also I wired a on off switch so I could remove 5v from the display. With the display off I¡¯m seeing just 150ma. I will also add the 5v regulator is running much cooler. I like the option of shutting off the display to save on battery life.
One other thing I did differently was instead of using a angled display plug I just simply solder to the back side of the board (keeps the wires out of the way) I also drilled the Nextion mounting holes a little wider so all 4 mounting screws are in place on the front of the display.
73 thanks for the great mod. Bill ng1p? On Jan 6, 2020, at 5:29 PM, bill richardson via Groups.Io <ng1p.bill@...> wrote:
? Sounds excellent. I may do what you did. I¡¯m looking at ways to save on current and I really like the CDC code. If you remove the 5v from the display I assume the radio will still operate? With your hookup it would be easy to add a switch. On Jan 6, 2020, at 4:50 PM, wb2cba@... wrote:
? Hi Bill,
Before the mod I checked each display¡¯s datasheet to compare power consumption and ?both draws around 60 to 65 ma of current.
I didn¡¯t actually measure the current draw on the raduino board 7805 regulator but it does feel hot with both displays, stock and nextion. May be it is a good idea to swap the heatsink with a notch bigger one.
I used the rig continously for almost 3 hours yesterday for qso¡¯s and nothing smoked up so I think it¡¯s surviving the heat ?:)
Barb, WB2CBA
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The short answer is yes.? However it is the same basic process as the v4 2 line display.? On the Home screen, when you press the encoder button, you get a yellow 20x2 text box come up that has the same function as the original non-graphic screen.? One of the selections in the menu scroll is to turn on calibration, like the original firmware.? The one difference for v5 sets is that the master calibration went back to zero beating a known am signal.
There is a screen that will display the current settings for the calibration.? I have not found a way to chage them other than through the "yellow pop up."
Hope that helps.
73
Evan
AC9TU
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Hi can you calibrated from nextion screen?
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Re: V6 TFT ADAPTOR by G8DJM
Thanks, I just ordered two sets (10) from the ebay US site for $2.66. Doesn't make sense to roll your own.? Dale
On Mon, Jan 13, 2020 at 2:51 AM David S < dsatn04@...> wrote: 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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Dale Hardin
KS4NS
Elberta, AL
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Re: Version 4 unbuilt for sale.
Hi, ????? I have an unbuilt complete version 4 for sale.Mini stroke stops me starting this.?75.00 plus post. Contact me off group daveg0ayd@... willing post anywhere as long as you pay the postage costs. Dave G0AYD.QTHR QRZ .COM.
ALSO BITX 40 VERSION 3 BOARD NO RADUINO..?40 PLUS POST. Again contact me off site daveg0ayd@... and will post anywhere you pay postage..
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Hi Gary
Yes sorry the regulator backwards, my bad eye's and late at night I missed that, all fixed and the new version uploaded.
Why use an additional regulator.? It's the backlight that draws most of the current that remains on the 5v rail through a 22 R, I wanted to minimise the possibility of "operator error" having people break out the 3.3v from the Nano.?I've got a Ubitx V3 MM0BEF has a V5, neither has the same wiring loom as the V6 but even that does not have 3.3v on the display cable.
This was not intended to be a project, just a guide for people who are having the issue of sourcing? Displays either as replacement for the V6 or to upgrade earlier versions.? I cant see any source where your sure your going to get a Display that works correctly.no messing.
HTH.
Regards
David S
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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
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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
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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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Bob Bennett
Dale Hardin KS4NS