Date   

Re: Nextion display cutout and mounting. #ubitx #ubitx-help

Ian Reeve
 

Hi Eric,

There are certainly differences but I have successfully loaded the KD8CEC tft file to the screen and it all works.

I have also just increased the screen to a 3.5” from a 2.8”,again a basic screen and the appropriate tft file installed just fine.

 

Is yours a genuine Nextion as there are Chinese copies.

 

I used a brand new microsd card as I understand that there can only be the one file you need on it.

 

Good luck! This sort of activity is a steep leaning curve!

 

73

 

Ian M0IDR

 

 

 

Sent from Mail for Windows 10

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Eric Carter <e.o.carter1@...>
Sent: Saturday, June 8, 2019 10:13:26 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Nextion display cutout and mounting. #ubitx #ubitx-help
 
Hi Ian,

My display is a basic version. Unfortunately, I did not know the limitation of the basic units.. I originally purchased it for my Raspberry Pi 3 B+. That may also explain the difficulty I had in getting it to work with the Raspberry 3 B+ as well.  I will order an enhanced version.

Thanks for the advice.


Re: Nextion display cutout and mounting. #ubitx #ubitx-help

Eric Carter <e.o.carter1@...>
 

Hi Ian,

My display is a basic version. Unfortunately, I did not know the limitation of the basic units.. I originally purchased it for my Raspberry Pi 3 B+. That may also explain the difficulty I had in getting it to work with the Raspberry 3 B+ as well.  I will order an enhanced version.

Thanks for the advice.


Re: Nextion display cutout and mounting. #ubitx #ubitx-help

Vic WA4THR
 

I am using the 2.8 Nextion. Initially I had cut the opening to fit the glass surface and then noticed not just that the surface had unused area, but more important the illuminating LED was shining light from the right side. My solution was to get a bezel that covered more of the right side. In retrospect, it would have been better to cut the original opening smaller and shimmed the Nextion display to fit behind the panel exposing the same area that was allowed with the bezel.


Re: Nextion display cutout and mounting. #ubitx #ubitx-help

Ian Reeve
 

Hi Eric, Are you using the enhanced version.The basic version won't work.A tft file can be copied directly to a married card and installed but the basic version of the ft will return a error


From: BITX20@groups.io <BITX20@groups.io> on behalf of Eric Carter <e.o.carter1@...>
Sent: Saturday, June 8, 2019 9:49:40 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Nextion display cutout and mounting. #ubitx #ubitx-help
 
Hi Derek,

I have the Nextion 3.2" model NX4024K032_011R. I have not had any success updating the firmware to my display. I tried the TFT and HMI files. Do you have any suggestions as to what to try to resolve this?

Eric Carter 


Re: V5 audio Help !

Mike Kilpatrick <mike.kilpatrick@...>
 

I’m very new to all this but I’ve twice had the no audio except for encoder clicks. 

First time I found that I had actually lost RF input due to a faulty BNC antenna connector.  Wiggling the coax revealed this. 

The second time I don’t know what caused it but I recovered audio by reloading the V5 firmware. Sounds easy but a nightmare for me 😀

Now I can’t get the unit to retain calibration and BFO settings. 
I guess it really is educational 😀


On 8 Jun 2019, at 15:14, "chuckr@..." <chuckr@...> wrote:

Hi, as mentioned first symptoms was the sudden drop in audio to near nothing after an attempt to wire audio to the mike plug ( second round four pin connector) for digital use. All was working fine until this point , I think i may have caused the Vol-H to get grounded. I have reversed all that I was doing and all wiring etc. to where it was last working at which time the audio would adjust so loud that one would have to cover their ears. For a day or so the audio was  still barely there and you could still tune around . as time went and I tried two lm386 and now the audio is completely gone except for the low clicking of the encoder as it turns.
All i have for testing is a multi-meter. I have checked all wiring for continuity. The radio still tunes and transmits as when it was new a couple weeks ago. I know this info is lacking and not really very tech but I will try to answer / our questions etc.
Thanks much
chuck


Re: Output change.

Ashhar Farhan
 

turn down the RV1
- f

On Sat, Jun 8, 2019 at 8:32 AM Curt via Groups.Io <wb8yyy=yahoo.com@groups.io> wrote:
My v4 is a bit below 5w on 40m, but I digress.

First, consider accuracy of your power meter. I won't swear my wm2 is perfect. Some instruments seem to over estimate power a bit.

Possibly your v5 might be doing a couple extra watts. Don't have schematic in front of me, but there is a pot on the board to dial back drive. Hint it is not the 2 pots that adjust bias for clean ssb! Its the one other one. Make sure you tweak the correct pot. My android isn't good at multi tasking, you should figure this out.

Curt


V5 ubitx Calibration

Mike Kilpatrick <mike.kilpatrick@...>
 

Newbie to uBitx and at 74 years young new to arduino also.
I have a V5 ubitx.
Having trouble calibrating frequency & BFO.
I can adjust the frequency listening to another receiver and I can adjust the BFO to clarify SSB signals.  Problem is I can't work out how to retain the settings.  I've tried using the push button on the encoder and also the mic PTT but the settings always revert to what they were before I start adjusting.   
Any help would be much appreciated


ubit-x V5 calibration #bitx20help

Mike Kilpatrick <mike.kilpatrick@...>
 

Newbie to uBitx and at 74 years young new to arduino also.
I have a V5 ubitx.
Having trouble calibrating frequency & BFO.
I can adjust the frequency listening to another receiver and I can adjust the BFO to clarify SSB signals.  Problem is I can't work out how to retain the settings.  I've tried using the push button on the encoder and also the mic PTT but the settings always revert to what they were before I start adjusting.   
Any help would be much appreciated


Re: V5 audio Help !

chuckr@hostu.org
 

Hi, as mentioned first symptoms was the sudden drop in audio to near nothing after an attempt to wire audio to the mike plug ( second round four pin connector) for digital use. All was working fine until this point , I think i may have caused the Vol-H to get grounded. I have reversed all that I was doing and all wiring etc. to where it was last working at which time the audio would adjust so loud that one would have to cover their ears. For a day or so the audio was  still barely there and you could still tune around . as time went and I tried two lm386 and now the audio is completely gone except for the low clicking of the encoder as it turns.
All i have for testing is a multi-meter. I have checked all wiring for continuity. The radio still tunes and transmits as when it was new a couple weeks ago. I know this info is lacking and not really very tech but I will try to answer / our questions etc.
Thanks much
chuck


Re: no audio

Arv Evans
 

Sam

Confused here.  You said you do not have an oscope, so what is it that is making weird lines?

If injecting audio at the mixer output did not produce audio at the regular output then you have
probably isolated the problem to between the mixer and the audio output.  Follow the audio
path on the schematic and inject audio (use a 0.1 mfd cap for DC isolation) at each stage
in the signal path from mixer output to audio output.  At the point where you start hearing audio
measure DC voltages and look for any that are different from normal values.  If voltages near the
fault are all normal then you will probably need to look for an open in the circuit path (cold solder
joint or possibly a bad component). 

Arv


On Fri, Jun 7, 2019 at 8:31 PM Sam Tedesco <stedesco619@...> wrote:
I have most test equipment. Except for an oscope. All it ever does is make weird lines! 


Re: V5 audio Help !

Arv Evans
 

I will try to help.  Since I have not been following your specific thread, can
you bring me up to speed.  The topic indicates you are using a V5 uBITX.
What have you tried thus far?  Did it ever work?  If it once worked, what did
you do last before it stopped?  Does the tuning work (changeable frequency
display on the LCD)?  What type power supply are you using?  What is the
power supply output voltage.

Arv K7HKL
_._


On Fri, Jun 7, 2019 at 7:57 PM chuckr@... <chuckr@...> wrote:
No audio at all now. Is there no longer any help available? Please !


Re: Output change.

Curt
 

My v4 is a bit below 5w on 40m, but I digress.

First, consider accuracy of your power meter. I won't swear my wm2 is perfect. Some instruments seem to over estimate power a bit.

Possibly your v5 might be doing a couple extra watts. Don't have schematic in front of me, but there is a pot on the board to dial back drive. Hint it is not the 2 pots that adjust bias for clean ssb! Its the one other one. Make sure you tweak the correct pot. My android isn't good at multi tasking, you should figure this out.

Curt


Re: Updated to a larger Nextion screen

Mark Hatch
 

Ian

i actually took the extreme step of mounting a 1.5a 7805 on the case.  And then I ran some wires to the Raduino (removing the original one).  Had no choice since the 5” Nextion draws 500ma. 

73
Mark


Re: no audio

Sam Tedesco
 

Tried injecting audio. No go. I might have to venture before the mixer. I'm lost on this one


Output change.

cf_fizban
 

I have an upcoming qrp sprint that had a max of 5w for ssb. Is there an easy way to back the power output down to this and back after the two hours? I am running a v5 bitx with the updated firmware that uses the manager and will be working 40m ssb only.


Re: V5 audio Help !

chuckr@hostu.org
 

No audio at all now. Is there no longer any help available? Please !


Re: Nextion 5/Enhanced for KD8CEC 1.2?

Mark Hatch
 

Definitely will share it!

However, may be a few months....  After I complete the screen work, I have to go after fixing the spurs and harmonics, then AGC, then amp, then maybe JackAl.  My todo list is too long. :-)

Mark


Re: no audio

Evan Hand
 

Sam,
can you fill us in on what test equipment you have?  I would start by measuring voltages on the RX tags listed in th3 schematic.  I would then try supplying a signal to the audio section (sometime the hum from touching th3 test point is enough). 

If I am reading your comments correctly, I think you may have a short somewhere in the RX power supply.  ESP if all of the audio sections are down. That was wh6 testing the voltages first, the going to audio signal injection to see where the signal is lost. 

Good luck, and happy hunting:)
73
Evan
AC9TU


Re: Nextion 5/Enhanced for KD8CEC 1.2?

JT Croteau <jt.tobit@...>
 

Mark, please share your ESP32 circuit when ready.  Thanks


On Fri, May 31, 2019, 00:28 Mark Hatch <mark2382@...> wrote:
Jack (of JackAl fame), suggested that I might look at replacing that standalone signal analyzer Nano with a ESP32. At $10 for amazon prime for 250mhz + 1.3mb flash and Arduino IDE compatible.... Well, being delivered tomorrow. :-) Yet another project to learn from. :-)

73
Mark
AJ6CU

BTW: Now got horizontal and vertical scaling of spectrum analyzer working on 5". Lots of cosmetics yet....


Re: no audio

Arv Evans
 

Sam

Difficult to troubleshoot remotely without more information, but if there is no local
oscillator signal into the BFO mixer there would be no audio output from that stage. 
You might connect your external audio amplifier to the output of the BFO mixer to
see if there is audio there.  The level will be low, but audio should be heard on
strong signals. 

Arv
_._


On Fri, Jun 7, 2019 at 1:38 PM Sam Tedesco <stedesco619@...> wrote:
I tried isolating the amp only. Nothing. I tried a radio shack amplified speaker on just the audio section of the main board...pre and post amp. Nothing. I tried isolating only the front panel. Nothing. Receive is gone. ???

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