Re: Nextion Displays >> warning
Wrote: Joe
I'd be interested in what you will do with all that real estate on the 7"!?
A waterfall/bandscope immediately comes to mind.? (Way beyond my skill set to implement)
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Re: Removing insulation from fine wires
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Re: NEXTION UPDATES FOR 7 AND 5 INCH - --ADAPTED FOR KD8CEC VER 1.095
Any idea when the Nextion 3.2 version for KD8CEC version 1.095 will be available?
Thanks for the work that you and Allen put in on this!
Bill
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Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up
Hi gang,
Got egg all over my face on this one! Been a tech and even taught electronics for the US Army for over 8 years before I retired from that career in 1981. Hooked this thing up, got all the software right but in the hookup to the Raduino's original display connector, I was off by 1 pin. I had power, ground and the Yellow (RX line to the Nextion) hooked where they were supposed to be. Had the TX line FROM the Nextion hooked to pin 5 of the Raduino's connector and since pin 5 on that connector is grounded on the Raduino, it's absolutely no wonder the uBITX could not receive commands from the Nextion!!!!
MY BAD!!!!! All is working as it should and the 3.2" display controls the rig just fine.
Amazing the problems a minor wiring error can cause when you are so sure you got it right that you don't re-check the connections!
Nice work on everything to all those who are involved in this project.
The only problem I can find is that the software is actually offsetting the CW Transmit carrier by the Sidetone frequency. This should actually leave the CW transmit carrier EXACTLY on the indicated frequency on the display. To properly use CW on any transceiver, the receiver frequency (not shown on the display though) should be moved into the filter's passband by the desired listening tone (usually the sidetone frequency). This has been the true way to do it ever since transceivers first came out (The Collins KWM-1 comes to mind). If you offset the transmit frequency, you wind up with two stations chasing each other either up or down the band depending on which sideband is used in CW receive. This COULD wind up with both stations walking right out of the band if they weren't watching what they were doing and that might get them in trouble with their respective governments.
I call on everyone writing firmware for the uBITX to take a close look at how they are implementing the CW vs Dial Frequency calibration. I think you will find that anyone having complaints of them not working right will find that the TX frequency is being offset rather than the RX.
Ron, W2CTX and I had this conversation early on in our development efforts for the W0EB/W2CTX firmware and though it took a while to convince Ron that it was the proper way to go, he came round and our calibration, when done according to the instructions will put the CW transmit frequency right on the money when you tune the received CW audio tone to match the uBITX sidetone setting. Of course not everyone (including me) has perfect pitch, so this might vary a few cycles due to individual hearing, but it will certainly be very close compared to the way it works out when the TX carrier is offset.
I've said my piece and I hope it gets the attention of Ashhar Farhan and Dr. Ian Lee as Ashhar's original software use TX offset for CW and so apparently does Dr. Lee.
Not meaning to be nasty to them, far from that. I have the interest of the entire ham community, especially CW operators that use the uBITX, in mind and the proper use of the mode.
Again, KUDOS to those developing the Nextion control - It appears to be working very well (now that I fixed my stupid wiring error).
Jim Sheldon, W0EB
(www.w0eb.com)
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------ Original Message ------ From: "Jim Sheldon" <w0eb@...> To: [email protected]Sent: 7/9/2018 2:47:20 PM Subject: Re: [BITX20] NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up I used the .hmi file and uploaded it from the editor. The .tft is the same file just already compiled and installed via the SD card. Either should be identical.
Jim
On Jul 9, 2018, at 2:17 PM, Mark M <junquemaile@...> wrote:
If the display is a Nextion and you loaded the TJC file (I assume you mean you loaded the tft file into the display), that might be the problem. I don't know the difference but I'd think there's a reason that there are two sets of files. FWIW, I have both a 2.4 and a 3.2 Nextion and both work fine with their respective tft files.
Mark AA7TA
On 7/9/18 10:42 AM, Jim Sheldon wrote:
New to the Nextion scene too, but I have had a 3.2" Nextion display for a while now and have been trying to make sense out of the editor. I think I finally have that figured out. I just loaded Ian's 1.095 software with the 3.2" TJC GUI. ...
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The LM386 can be improved. Here are some great mods to the chip we love to hate
Gordon,
The v4 audio works fine but a little low on gain. Farhan has inadvertently forgotten to add that extra component required.
The mod is extremely simple, anyone can do it. At low volumes you can distinctly hear the improvement and increase
in volume.
The change was made so that uBitx will not depend on chips that are obsolete or parts that may become..
I sincerely dislike the LM386!
Raj
At 10-07-18, you wrote:
>Raj, that is a solution, but isn¡¯t it fairly simple just to use a low parts count LM 386 amplifier for all this?? ?It seems to me that making such a widely available part work properly would be the better long-term solution, able to work with multiple output impedances, temperatures voltages etc.? Am I missing something? > On Jul 10, 2018, at 02:01, Raj vu2zap <rajendrakumargg@...> wrote: > > The volume increases a lot if you do the quiescent current adjust mod that I have > described before. > > Cut track between D15 and D16.. solder a multiturn vertical preset between the > two diodes and zero the preset resistance and slowly increase the preset till > the volume of background noise stops increasing. Check if final audio transistors > are hot, if hot reduce the preset.. > > Raj > > At 10-07-18, you wrote: >> My v4 ubitx has low audio if I try to use a speaker, with headphones it is reasonable. > > > >
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raj,
is there any other way of increasing the quiescent current by just changing the value of components? that might be an easier mod. something that i can even ask the production to do.
- f
On Tue, Jul 10, 2018 at 11:31 AM, Raj vu2zap <rajendrakumargg@...> wrote: The volume increases a lot if you do the quiescent current adjust mod that I have
described before.
Cut track between D15 and D16.. solder a multiturn vertical preset between the
two diodes and zero the preset resistance and slowly increase the preset till
the volume of background noise stops increasing. Check if final audio transistors
are hot, if hot reduce the preset..
Raj
At 10-07-18, you wrote:
>My v4 ubitx has low audio if I try to use a speaker, with headphones it is reasonable.
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Re: Bitx arduino reprograming
Elmar,
None of us were born knowing how to do this.? I will try to explain with more detail to see if we can get you through this.? Let us first see if your computer is recognizing the nano.? This will help determine if you have the correct driver.
First go to your device manager.? In Windows 7 go to control panel, then systems and security, and finally device manager.? Most likely you will have one of the two situations described below.
Find a heading labeled Ports (COM & LPT).? Do you see Arduino Nano listed?? If so, write down the port number shown after it.
If you did find the Nano in that section you have the driver.? Now go to the Arduino IDE (the program you installed to compile and load sketches) and check the following under the Tools tab at the top:? For board make sure it shows Arduino Nano, select it from the list by clicking the arrow.? For port make sure it shows the port number you found in your device manager.? Once you have the board and port selected you should be able to upload the sketch.
If in your device manager the Nano does not show up under ports it is probably under Other Devices.? If that is the case you do need to install the driver.? That is also a relatively easy step but that will be for another post if you need it.
Let us know what you find.
--
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Inexpensive eBay Amplifier Kits
Anyone have success or other experience pairing a BITX (B40 or ?B) with one of those eBay amplifier kits, like this one?
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Re: [uBITX] How to adjust CW sidetone volume?
#ubitx
Rod
?as soon as my hearing returns I am going to make an adjustment to help with sidetone volume. I have no experience with surface mount resistors.? I want to put a pot in there so i can adjust.? Have you tried that? and suggestions?
thanks john
NM2R
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Gordon,
The v4 audio works fine but a little low on gain. Farhan has inadvertently forgotten to add that extra component required.
The mod is extremely simple, anyone can do it. At low volumes you can distinctly hear the improvement and increase
in volume.
The change was made so that uBitx will not depend on chips that are obsolete or parts that may become..
I sincerely dislike the LM386!
Raj
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At 10-07-18, you wrote: Raj, that is a solution, but isn?€?t it fairly simple just to use a low parts count LM 386 amplifier for all this? It seems to me that making such a widely available part work properly would be the better long-term solution, able to work with multiple output impedances, temperatures voltages etc. Am I missing something? > On Jul 10, 2018, at 02:01, Raj vu2zap <rajendrakumargg@...> wrote: > > The volume increases a lot if you do the quiescent current adjust mod that I have > described before. > > Cut track between D15 and D16.. solder a multiturn vertical preset between the > two diodes and zero the preset resistance and slowly increase the preset till > the volume of background noise stops increasing. Check if final audio transistors > are hot, if hot reduce the preset.. > > Raj > > At 10-07-18, you wrote: >> My v4 ubitx has low audio if I try to use a speaker, with headphones it is reasonable. > > > >
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Re: uBITX raduino no if output help please
I had a similar problem Mike,
I came back to town after a few weeks and found the raduino misbehaving. It would not program from
the PC but would display normally.. I finally reset it and that bricked it!
Replaced the nano and all is well.
Raj
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At 10-07-18, you wrote: Hi all, I have been away from the uBITX groups and pages for a while. My uBITX has developed a problem some time ago and I have just got around to trying to sort it out.
It seems the raduino is at fault. I am not getting any IF frequencies out of it. The 25mhz crystal is oscillating and the LCD is indicating frequencies etc, but no measureable IF outputs from the raduino board. it still has the original firmware from the early production uBITX kits. What is my best course of action? reflash the raduino firmware or is it more like a hardware issue?
thanks in advance.
--
Mike VK3XL
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Re: No CW Key Jack Wiring (Check My Work)
#ubitx
Instead of omit the keyer, i use a switch to activate and use the CW as a constant carrier signal for antena tunning. It's easier than say Helooooooooooooooooooo!
73
David, CA3DPV
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Raj, that is a solution, but isn¡¯t it fairly simple just to use a low parts count LM 386 amplifier for all this? It seems to me that making such a widely available part work properly would be the better long-term solution, able to work with multiple output impedances, temperatures voltages etc.
Am I missing something?
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Show quoted text
On Jul 10, 2018, at 02:01, Raj vu2zap <rajendrakumargg@...> wrote:
The volume increases a lot if you do the quiescent current adjust mod that I have
described before.
Cut track between D15 and D16.. solder a multiturn vertical preset between the
two diodes and zero the preset resistance and slowly increase the preset till
the volume of background noise stops increasing. Check if final audio transistors
are hot, if hot reduce the preset..
Raj
At 10-07-18, you wrote:
My v4 ubitx has low audio if I try to use a speaker, with headphones it is reasonable.
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Re: AB5N, Bob Nagy U-Tube Video
Hi Mike,
Hams are in all walks of life and every one of us have divergent, other interests besides our professions - or how we earn our livings - and our ham radio hobby. We make some attempt at staying "on topic" in the forums and that tends to hide all those interesting other faces we all have. At the same time, those other faces are exactly what drags us off topic so often :) That is not all bad:)
73,
Bill KU8H
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On 07/10/2018 01:07 AM, Mike aka KC2WVB wrote: Bill,
We were a bit different when we were boys presumably, in the late 50's
and early 60's. You loved electronics and I loved carpentry and never
gave electronics more than a passing glance.
When I was 5 or 6 I tried to talk my grandpa into the two of us building
an airplane but he turned the concept down for a later go. However I did
build a boy size stage coach and later a small canal boat around the age
of 11 or 12. So, carpentry and no electronics has been in my blood for a
very long time and the only thing I like as well is the field I went
into which is pure mathematics which I can bore the scrap out of most
people if they allow me to start on the topic but I do find electronics
a fun hobby none the less.
--
bark less - wag more
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Re: LED Power Output Indicator
#ubitx
Lee
I put it up on ubitx.net , but I have now corrected the diagram
for you!? Glad you are now getting more power up the spout!
Mike ZL1AXG ubitx.net
On 10/07/18 8:17 AM, Lee wrote:
Oh-Oh.? I figured
out why my led was so bright.? The circuit was eating up my
output.?? The diagram my? PSK31 ham friend sent me is wrong.? It
showed the bottom of the circuit grounded.? Nope, they needed to
be connected together but not grounded.?? I found a similar
circuit which uses a capacitor instead of the resistor.? I now use
a 2 volt green diffused LED which is easy to see but not as bright
as the original but it does not load the output as before.
Here is a working circuit and whoever posted it on could they put up
the corrected circuit.
--
Lee - N9LO? "I Void Warranties"
?
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Re: Crystal CW filter with Version 4 uBITX boards?
#ubitx
Doesn't look bad.
For the record, I have not duplicated the in and output transformers for the extra xtal filter. So I only use L1 to L4 and let them transform both frequencies.
Yesterday I had a? mistype, I use 8 xtals and not 10, my wide filter is the normal one from the original schematic.
Alex
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Re: uBITX raduino no if output help please
Hi Mike, I used to live just over the back of you in Eden Grv.? (I have now moved just down the road to the Lakes area ) ??
Is it only the IF outputs not working or is it also the VFO output not working?
Glenn
vk3pe
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On Mon, Jul 9, 2018 at 10:48 pm, <vk3xl@...> wrote:
Hi all, I have been away from the uBITX groups and pages for a while. My uBITX has developed a problem some time ago and I have just got around to trying to sort it out.
It seems the raduino is at fault. I am not getting any IF frequencies out of it. The 25mhz crystal is oscillating?and the LCD is indicating frequencies etc, but no measureable IF outputs from the raduino board. it still has the original firmware from the early production uBITX kits. What is my best course of action? reflash the raduino firmware or is it more like a hardware issue?
thanks in advance.
--
Mike VK3XL
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Re: Bitx arduino reprograming
Hi Jack,
thank you for help and Infos.
sorry I can use the pc but can¡¯t work with him.
have no idea how I can realise all this stuff.?Theorie and practice are often different.
Now I am pretty disappointed about myself. Perhaps my son (which is much more interested in computing)
can find a solution with your helpful hints and tips.
Kind regards, Elmar.
?
Gesendet:?Dienstag, 10. Juli 2018 um 00:28 Uhr
Von:?"Jack Purdum via Groups.Io" <jjpurdum@...>
An:[email protected]
Betreff:?Re: [BITX20] Bitx arduino reprograming
?
I don't know if this is your problem, but you may not have the device drivers install for your system. Look in the drivers subdirectory off the main directory (e.g., C:\Arduino1.8.5\drivers) and look for the drivers program dpinst-amd64.exe. Try running that. You must then reload the Arduino IDE to activate the new driver. When you look in the Tools --> Board menu item, your Arduino should be selected. Using the menu Tools --> Port, you should see some COM port selected. If so, try to recompile your program.
?
Jack, W8TEE
?
On Monday, July 9, 2018, 6:05:24 PM EDT, Elmar V?ller <dl2qa@...> wrote:
?
?
Hello,
have Followed the Installation Instructions?-amounters/bitx40)
and hopefuly load all well.
problem is, i am complete unexperienced with pc stuff.
I get?the Message: Upload to board fail com1
Spend a lot of Time but no success .
73,Elmar.
?
Gesendet:?Montag, 09. Juli 2018 um 22:02 Uhr
Von:?"Doug W" <dougwilner@...>
An:[email protected]
Betreff:?Re: [BITX20] Bitx arduino reprograming
what exactly have you tried and what exactly were the results?? it will be easier to help you if we know what is going on.
--
?
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Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up
Digole make a 'smart' TFT also.? Not as smart though as the Nextion from what I have seen, but useful nonetheless in other projects.?? There is no IDE like Nextion, just a large number of commands.?
glenn
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On Mon, Jul 9, 2018 at 08:59 pm, Joe wrote:
Bob,
The code is unique to Nextion displays only.. The nextion display is one of the only intelligent displays having its own microprocessor, memory etc..
?
Joe
On Tue, Jul 10, 2018 at 12:49 AM Bob Bennett via Groups.Io <bobsmacbox= [email protected]> wrote: I have an old TFT_320QVT layng around. I wonder if the code for the Nextion is generic for other touch displays or is it unique to Nextion?
Bob nz2z
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The volume increases a lot if you do the quiescent current adjust mod that I have
described before.
Cut track between D15 and D16.. solder a multiturn vertical preset between the
two diodes and zero the preset resistance and slowly increase the preset till
the volume of background noise stops increasing. Check if final audio transistors
are hot, if hot reduce the preset..
Raj
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At 10-07-18, you wrote: My v4 ubitx has low audio if I try to use a speaker, with headphones it is reasonable.
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Robert Ogburn
Jim Sheldon
Arvo W0VRA
Raj vu2zap