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Re: uBitx V6 GNDREF Connection #v6 #ubitxv6 #ubitx-help

Evan Hand
 

I went back and checked the v3, v4, v5, and v6 schematics.  All are the same with only 2 GNDREF points on T2 and T4.  In the case of T4, it would need to be at the same level as the rest of the board ground in order for the radio to work (Both of the IF amps need it for either input or output).  For T2, the antenna connection is drawn connected to the common ground, not GRNREF.  Based on this, I do not see any distinction between them.  It may have been a holdover from a pre-v3 design, or a simple typo with the copy-paste function when Ashhar Farhan created the schematics.  I have not taken my units apart to look, however, I am confident that the shield connection of the antenna goes to the common ground for the board.

May I ask the reason for your question?  It is better to know how the answer would be used to ensure that we can give you the information that you want.

73
Evan
AC9TU


Re: Nextion Display on uBITX #ubitx #nextion

Evan Hand
 

Reed,

Thank you for the summary and all of the posts you make on this board.  I can say I read everyone from you and get insights from all.  

I do have 3 Nextion uBITX, 2 v4, and 1 v5 with various size screens.  Your comments as far as the Nextion devices are correct, and I agree that you should start with the stock stuff, get it going, and then start the upgrade journey from there. 

Again Thank You!
73
Evan
AC9TU


Re: uBiTX #v6 - First steps after assembly #v6

Urs, dl1kdx
 

Hi Reed,

here my test results valid for stock Nano and replacement:

1. Booting the Nano gives 1320 Hz tone out of the speaker.
2. Rotating the Encoder leads to scratching noise on the speaker.
3. Short pressing (< 3 secs) the Encoder has no impact on audio.
4. Long pressing (> 3 secs) gives 440 Hz tone for 5 secs with a delay of 3 secs.

So it would mean the rotating part of the encoder is faulty? Unfortunately I don't have a spare one on me.

73 de Urs


Re: V6

Reed N
 

Requires a very small amount of assembly. See https://www.hfsignals.com/index.php/ubitx-v6-assembling-the-full-kit/


Reed


Re: uBiTX #v6 - First steps after assembly #v6

Reed N
 

Hi Urs,

I've added some colors to the raduino schematic. The black/brown/orange/yellow of the encoder is on top, and while the speaker wire is also brown, I've colored the cw_tone trace purple. It's probably not great to drive the speaker by itself directly from the microcontroller, since it has such a low resistance, so if you can throw a 125k resistor in series with the speaker to limit the current on the D6 pin to 40mA, your nano will thank you.


Reed


Re: uBiTX #v6 - First steps after assembly #v6

Urs, dl1kdx
 

Rotary Encoder wiring:

Black - GND
Red - Button
Brown, Yellow - Phase A, B

Right?


Re: Nextion Display on uBITX #ubitx #nextion

Reed N
 

Hi Aaron,

Disclaimer: I don't have a Nextion screen, but have done my fair share of research on them.

First, some history. The v5 and older uBiTX models only had a 2-line text LCD, so this wonderful community decided to step it up a notch and add a nice touch screen (the Nextion), and KD8CEC's software added a bunch of additional functionality, like the memory manager. This was all possible because all of the screen rendering and graphical resources were stored on the Nextion itself, so the Arduino Nano just had to know how to send and receive serial commands. The Nextion is actually programmed separately, and has it's own coding and microprocessor to run the menus, and turn the raw touch inputs into meaningful desired action inputs. Furthermore, there are larger and smaller Nextion screens available, so if you want a different size, you can have it. If you're getting the stock v6 case, this probably isn't something important to you, since it'd would be difficult to resize the screen opening.

The uBiTX v6 added an ILI9341+XPT2046 touch screen. However, unlike the Nextion, this screen does NOT store ANY of the graphical resources, and does NOT store or render stuff automatically. This means that the Arduino Nano has to, in addition to running the radio, drive the screen output, and receive and process the raw touch inputs. The Arduino Nano was released in 2008 (source: https://blog.arduino.cc/2008/05/15/arduino-nano-all-in-one-design-for-breadboard-use/), so at 12 years of age, it's fair to say it's long in the tooth as far as microcontrollers go, especially when trying to drive a color touch screen with 320*240*8*3=1,843,200bits of data to present. For comparison, the newest Arduino Nanos have just 262,144 bits (32,768 bytes) of flash memory, and only 30720 bytes of that is available for normal use! It's actually quite remarkable that the Arduino Nano works as well as it does in the uBiTX v6 - big kudos to Ashhar for making it work. That said, the relative lack of flash space and general processing power on the Arduino Nano means that you literally can't make the screen presentation match the speed or style of the Nextion, nor can you fit as many features, since those take up programming space too. I was able to squeeze in a bit more functionality in my branch (see full thread: https://groups.io/g/BITX20/topic/r1_4_0_software_release/73992676), but ultimately there's just not enough space for all the features a person might want.

I'd recommend you give the stock software and then my software a go first. It costs you nothing, and if it's good enough for what you need, great! If not, then there are a couple options worth considering:
1) Buy a Nextion and install the KD8CEC software on the Arduino Nano. This solution is tried and true, and you can find several posts on here with people who have already done this conversion with their v6's
2) Buy a better microcontroller option. JACKAL is a Teensy 3.6-based upgrade path, with some additional hardware features too. TSW has their Teensy 4.0 adapter board, which leaves your system mostly stock. Both of these options include software that takes advantage of the much more powerful microcontrollers to give you additional features, and revised screen graphics. You can also spin up an ESP32 for the task like Ramón EA4GZI, although at the present you'll have to sort out the wiring yourself.


Reed


Re: uBiTX #v6 - First steps after assembly #v6

Urs, dl1kdx
 

Hi Reed,

thanks for your great advice. I will figure it out and give update later.

To clarify the connectivity:
1. Speaker connects straight to D6 and GND.
2. Encoder's A & B connects to A0 & A1.
3. Encoder's button to A2.
4. Encoder to GND.

Could you please name the encoder's colors according to the pics above?

73 de Urs


Re: Nextion Display on uBITX #ubitx #nextion

Rene
 

Hallo Aaron, ik heb mezelf ook een Nextion 3.2-scherm besteld. Door veel problemen met mijn Bitx V6 en druk bezig met constructies aan mijn huis kan ik momenteel geen tijd aan de radio besteden. Wat ik heb gelezen en wat ik heb gezien en begrepen, is de software en dingen die u op het scherm efficiënter kunt zien. Ziet er ook beter uit. Dus over een maand of 2 i am gonna try to instal this screen. Also i believe that cat control by usb is working good. There is more then enough to find on rhis forum and on HF Signals. 
Greetz,
Rene
Netherlands


Re: uBiTX #v6 - First steps after assembly #v6

Reed N
 

Hi Urs,

You could be right about the raduino board being bad, but I'm not totally sure. One more thing you could try as a sanity check would be to directly connect the nano's D6 and ground to the speaker (for feedback) and A0, A1, A2 to encoder's A, B, and button connectors (and also connect the encoder to ground). Running the input debug sketch with JUST the encoder and speaker should eliminate any issues with the raduino board, and with the speaker, you should be able to immediately hear stuff when you turn the knob. You could also try this with another encoder, if you happen to have one in your junk box.


Reed


V6

bahhub@...
 

Hello

Is this ready to use radio or i have to assemble it,?

73


Re: Ubitx V6 CW Read Display

Reed N
 

Hi Dave,

The master branch at https://github.com/reedbn/ubitxv6 is still a good option. On the right hand side of the page, there's a "Clone or download" menu, and a "download ZIP" option when you expand it.

I appreciate the generous offer of the template, but I'm fully sighted, and I've been contacted by a few other visually impaired hams on here. If you're willing to part with the extra one, I'd prefer it go to somebody who could truly benefit from your brother's hard work. If you or your brother can share a picture of the template installed on your radio in your shack, that would make my day. And if you're willing, share the CAD file with this group so that other operators can make their own too!


Reed


Re: uBitx V6 GNDREF Connection #v6 #ubitxv6 #ubitx-help

Reed N
 

It is my understanding that GNDREF is designed to be a floating ground used by most of the transformers in the system. It is not connected to the input GND, or necessarily related to GND in any particular way. I haven't done the analysis to sort out exactly what would happen if it were connected to GND, but I suspect there would be some high voltages passed through that could damage stuff.


Reed


hfsignals safety

Reed N
 

Looks like the cert is valid for admin.hfsignals.com and hfsignals.com, but NOT www.hfsignals.com, and thus creates a nice big warning. Pretty sure this is an issue with the cert setup, and not an actual website hack.


Reed


Nextion Display on uBITX #ubitx #nextion

Aaron K5ATG
 

I ordered my uBITX V6 from HFSigs. Just wondering. I have seen some change the display over to a Nextion display. What are the benefits of having a Nextion display over the default TFT display? 


Ubitx V6 CW Read Display

David Barber
 


Reed:

I am now at the point to where I can download & install your CW Read display version of V6 on my UBitX V6. What is the ZIP file choice I need to download to make this happen? 

I have a plexiglass templet to place over the V6 screen with 17 openings to match up with each displayed button.  The templet was designed with cad software by my brother. Not sure what kind of  machine he used in connection with the cad program to make the Templet.  With some success, I have used the templet under the default V6 firmware.  

As a a person who is blind, I look forward to hear the V6 display read via CW. I will let you know how it works for me. 

By the way, I do have an extra templet that I can send you. Let me know? 

Many thanks for the wonderful CW read Display effort to benefit persons who are blind. 

73 Dave WD8AJQ

5

On Feb 6, 2020, at 12:18 PM, Reed N <greenkid336600+groupsio@...> wrote:

Hi Dave,

If you download the software from my repo using the URL you posted, you will have the current master branch, which you will then need to install on the radio. That branch includes Morse code readback feature. It's not 100% polished, but it is working. After starting up the radio, hold the tuner button down and you'll hear it turn on. This is different than Ashhar's code, where holding the button enters the menu, because there's a dedicated menu button on the touch screen UI that most users can use, and for a fully blind person, having to navigate a menu structure they can't see to turn on the option would be nearly impossible.

I haven't changed any of the CAT control to my knowledge, so if your device has a USB port you can connect the radio to, and an app that "speaks" CAT, then it should work. I don't have an iPhone, so I can't say if such cables or apps exist.

As a side note, for future reference, it's generally best to create a new thread for questions like these, since this has nothing to do with Stefan's audio problems.


Reed


uBitx V6 GNDREF Connection #v6 #ubitxv6 #ubitx-help

 

Hi all,
GND and GNDREF connections appear on the V6 schema. How are they different from each other? Should GNDREF be connected to the earth, GND battery minus, or can the two be tied together and connected to both ground and battery minus?
--
TB3EN. 73's


uBIX V5

Mike Short <ai4ns.mike.spam@...>
 

I have a V5 that I was building for a nearly blind ham. I have had it for months and with work stuff I won’t be able to finish it for a long time. Can someone finish alignment checks, etc for me? I have an old scanner case I was going to put it in as well. 

Mike
AI4NS 


Re: uBIX V3

Bill <1lasportsman@...>
 

John
Thanks for offer I think I have it sold local
But will keep you in mind if it falls thru
Bill


On May 19, 2020, at 12:37 PM, johnrof@... wrote:

OM, if your remaining disabilities will allow you to operate the rig, I would be happy to stuff it into a box and wire it up for you.  

Sincerely, John N6II


Re: uBIX V3

John Pearson
 

OM, if your remaining disabilities will allow you to operate the rig, I would be happy to stuff it into a box and wire it up for you.  

Sincerely, John N6II