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Re: CNC encoder for ubitx
Jack,
That would be very cool. But darn, I¡¯d have to subscribe to CQ. If they go for it let me know and I¡¯ll subscribe. I¡¯ve been wondering about a better encoder. Something like 200 PPR so a dial rotation would come out at 2KHz at 10 Hz. I bought one on eBay but it is for industrial counting of things and not smooth enough for a VFO. So most def, I am interested in such a column. And I like your topic immensely, Joe N9JR |
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Re: micro bitx kit from 2018
#ubitx
I would be interested in this topic. I put together one that I got a couple of years ago (a v4).
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Re: CNC encoder for ubitx
Jack At the risk of giving away some content that may have been better saved for your column, I was talking about the pseudo dumb terminal that is part of the Arduino IDE.? To the best of my knowledge there is no command that be sent by the attached Arduino to clear this pseudo-terminal screen. My solution is to have the Arduino code send a series of "\n" commands to the dumb terminal emulator.? At 9600 or above this happens so fast that existing screen content is simply scrolled off the screen and disappears without even a flicker.? Code has been added to BitLash to allow it to poll and write to various ports in modes that provide ham radio type interfaces (i.e. SWR, PWR, REV, FWD, MODE, FREQUENCY, FREQUENCY STEP SIZE, FREQUENCY STEP RATE, VFO-A, VFO-B, VFO-C, VFO-D, and so on).? BitLash can be rebuilt to be both attached computer with, or without CAT controls for various type of CAT...even the Schr?dinger's version! ? As you know, many of those here have only recently started to teach themselves C-language.? My typical mistakes may be of interest to them as they make similar mistakes and have related questions.? Others are like me, old codgers with poor memories, and need all the help we can get. Arv _._ On Fri, May 14, 2021 at 2:51 PM Jack, W8TEE via <jjpurdum=[email protected]> wrote:
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Re: Strange drop in sensitivity on V6
#ubitxv6
Evan,
The AGC board I installed is at this link which shows how it is conjnected to the uBITX PCB. 73, Justin B. KI5GKD |
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Re: CNC encoder for ubitx
Jack, W8TEE
Hi Arv: All of those would be interesting, but I don't know anything about BitLash other than what it is. Usually, a device being used as a screen (e.g., 16x2 display or TFT color display) will have doc sheets telling what the commands are for a clear screen (and other things, like cursor positioning). Reading push buttons or a keyboard is really the same thing, only a keyboard usually has more switches that the microcontroller has pins, so some kind of interface is normally used. The current project I'm working on (an SDT) uses one pin to control 16 switches, saving me 15 pins for other uses. Those are the kinds of things I want to highlight. I do have to keep in mind that I need to provide a solution in a fairly small number of paragraphs. Still, I think it would be nice to have a place where software topics can be discussed. If it does happen, I would also like to present the ideas/solutions of others, too. Jack, W8TEE
On Friday, May 14, 2021, 4:30:42 PM EDT, Arv Evans <arvid.evans@...> wrote:
Jack Of course I would be interested.? I might even be able to contribute some problems and maybe some solutions for the column. Things that immediately come to mind:
Arv? K7HKL _-_ On Thu, May 13, 2021 at 8:49 PM Jack, W8TEE via <jjpurdum=[email protected]> wrote:
--
Jack, W8TEE |
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Re: Question about voltage regulator
Might help _._ On Fri, May 14, 2021 at 5:51 AM Jonas Sanamon <sanamon@...> wrote:
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Tuning
All,
So the reason I wanted to upload sketches is as follows: I find the tuning of the uBITX troublesome. Say I'm at the top of 40M and I want to get down to the CW segment: I spin the knob, and down she goes. But before I get to where I'm going, it shifts into this "hyper-tune" mode, and all the sudden I'm down at 6MHz. I'd like it to act more like my old SB-34 transceiver. This has a mechanical vernier mechanism. The "fine" vernier area is about 15 kHz wide. You tune fairly fast to get more or less where you're going, you pass it, and then when you reverse the knob, it starts tuning really slow. As long as you're in the slow-tune area, it tunes fine & slow. When you get to the end of the 15kHz fine tune area, it starts tuning fast again. By "fast", I mean a convenient speed for scanning across the segment, looking for signals. By "slow", I mean a speed that's good for zero-beating an SSB signal, or zeroing in on a CW signal. I have no use at all for the "hyper speed" tuning mode. If I wanted to move a MHz or more, I'd just change bands or punch in the frequency. - Jerry KF6VB |
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Re: CNC encoder for ubitx
Jack Of course I would be interested.? I might even be able to contribute some problems and maybe some solutions for the column. Things that immediately come to mind:
Arv? K7HKL _-_ On Thu, May 13, 2021 at 8:49 PM Jack, W8TEE via <jjpurdum=[email protected]> wrote:
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Re: Parasites noises
Hello,
I¡¯ve read a lot about the isolation of analog and digital masses and their star connection. For me and for the digital masses, I see at least 4. The arduino, the SI535, the Nextion and the encoder. Knowing that my Arduino and my SI5351 are on individual tulip support for each leg, it¡¯s easy to isolate them (desolder the tulip for each leg) and connect them alone together and after to the ground. What do you think about it. Is it the design of the Ubitx with the card in front? If you have any other ideas., tell me. cdt |
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Re: Upload sketch
Woo hoo! It worked!
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Show quoted text
I also changed the code a bit - added an extra printout just to convince me that it had actually uploaded. I was fooled because the IDE didn't display anything like "upload finished". And the LCD display didn't change. - Jerry KF6VB On 2021-05-14 09:40, Jack, W8TEE via groups.io wrote:
Jerry: |
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Re: Strange drop in sensitivity on V6
#ubitxv6
Even and Ashhar - The middle leg of D5 produces a small "squeal" (about the same level as that of pin 3 of the amp) as well so maybe everything is OK.? As soon as I find my USB cable I'll re-calibrate the S-meter and consider it done.? Not really set up to do any fine soldering up here so any testing that requires soldering on the board will have to wait until this fall when I'm back in civilization! :-)
Thanks for the help and sanity check. 73, Justin B. KI5GKD |
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Re: Upload sketch
Jack, W8TEE
Jerry: What happens if you try to run the following code: char message[128]; void setup() { ? // initialize serial: ? Serial.begin(9600); } void loop() { ? int charCount; ? ? // if there's any serial available, read it: ? while (Serial.available() > 0) { ??? charCount = Serial.readBytesUntil('\n', message, sizeof(message) - 1); ??? if (charCount > 0) { ????? message[charCount] = '\0';????? // It's now a string... ????? Serial.println(message); ????? break; ??? } ? } } Just type a short sentence into the serial monitor's textbox and press Enter. Jack, W8TEE
On Friday, May 14, 2021, 12:30:38 PM EDT, jerry@... <jerry@...> wrote:
Now on a different PC.? Results the same.? Yes, the CH340 driver is loaded.? Anybody know what's the baud rate? ? Playing with the Serial Monitor at 9600 baud, I type "hello" into the "send" box and it responds with a string of non-ascii characters - actually, the upside down question mark that Spanish people put at the beginning of a question. ? ? ? ? ? ? ? - Jerry On 2021-05-14 08:59, Evan Hand wrote: > Jerry, > > I would go to the Windows Device Manager (right-click on the Windows > Start Icone) and verify that the CH340 driver is connected and the com > port assigned.? It should show up under Ports (Com & LPT). > > Also, note that you need to have the Nano connected BEFORE you open > the IDE for communication.? Not all software will recognize an added > drive after it is opened. > > 73 > Evan > AC9TU > > > Links: > ------ > [1] /g/BITX20/message/88331 > [2] /mt/82826925/243852 > [3] /g/BITX20/post > [4] /g/BITX20/editsub/243852 > [5] /g/BITX20/leave/10189903/243852/952924773/xyzzy -- Jack, W8TEE |
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Re: Upload sketch
On 2021-05-14 09:26, Jack, W8TEE via groups.io wrote:
I'm late to the conversation, but I'm assuming you've installed the*** Yes, I have that. - Jerry Jack, W8TEE |
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Re: Upload sketch
Now on a different PC. Results the same. Yes, the CH340 driver is loaded. Anybody know what's the
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Show quoted text
baud rate? Playing with the Serial Monitor at 9600 baud, I type "hello" into the "send" box and it responds with a string of non-ascii characters - actually, the upside down question mark that Spanish people put at the beginning of a question. - Jerry On 2021-05-14 08:59, Evan Hand wrote:
Jerry, |
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Re: Upload sketch
Jack, W8TEE
I'm late to the conversation, but I'm assuming you've installed the CH340 or CH341 device driver, right? Jack, W8TEE
On Friday, May 14, 2021, 11:21:16 AM EDT, jerry@... <jerry@...> wrote:
All, ? I am trying to upload the "reedbn" alternate firmware to my ubitx V6. After downloading it from github, loading it into the Arduino IDE and successfully compiling it, the upload fails with "stk500_recv(): programmer is not responding".? Or it just stops without displaying anything. ? I believe I have the right serial port - the ubitx display redraws itself when the upload attempt starts, or when I try the serial monitor. Settings are "Board: Arduino Nano", "Processor: Atmega 328P( old bootloader )", "Programmer: AVR ISP". ? Probably something simple...help?? Thanks in advance, ? ? ? ? ? ? ? ? - Jerry KF6VB On 2021-05-14 06:48, Robert DiPippo, k1wyc via groups.io wrote:
> How about doing what is as done in many Yaesu and Icom transceivers > put a 7808 in series with the 7805 that will set the voltage change at > 4 volts then 3 volts which will make the regulators run cooler. Also > additional protection. > > Thanks > > Bob, k1wyc > On 5/14/21 8:26 AM, Rafael Pinto [PU1OWL] wrote: > >> Hi >> >> I have a lot of regards about replacing the 7805 by a switching >> module. If the 7805 is damaged, little or no output voltage would be >> present, but if the active switch a switching module is damaged, >> then the 12V would be connected straight to the 5V rail through the >> inductor, potentially killing the raduino, and even a computer >> connected to its USB port. Also, a step-down switching module >> generates a lot of noise on the 12V rails in the RF range. >> >> Remember: a step-down is constantly "shorting" the input, and a >> step-up is constantly "shorting" the output. Unless you use a >> coupled inductor? ?uk design, there is no way to have no RF being >> generated by a SMPS in one of its rails. >> >> That said, on the other hand, the 7805 needs some kind of >> protection, as pointed out by Gerard, and I believe it can be as >> simple as a schottky diode. >> >> Rafael - PU1OWL > > -- > Connecting the classroom to the world via technology ?? > > > Links: > ------ > [1] /g/BITX20/message/88320 > [2] /mt/82803165/243852 > [3] /g/BITX20/post > [4] /g/BITX20/editsub/243852 > [5] /g/BITX20/leave/10189903/243852/952924773/xyzzy -- Jack, W8TEE |
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Re: Upload sketch
Jack, W8TEE
Also, under the Tools --> bootloader Atmega328P, you will likely need to select the "Olde bootloader" option if you are using a clone. Jack, W8TEE
On Friday, May 14, 2021, 11:59:53 AM EDT, Evan Hand <elhandjr@...> wrote:
Jerry, I would go to the Windows Device Manager (right-click on the Windows Start Icone) and verify that the CH340 driver is connected and the com port assigned.? It should show up under Ports (Com & LPT).? Also, note that you need to have the Nano connected BEFORE you open the IDE for communication.? Not all software will recognize an added drive after it is opened. 73 Evan AC9TU -- Jack, W8TEE |
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Re: Strange drop in sensitivity on V6
#ubitxv6
Justin,
The fact that you are away from AC power lines (I am assuming that is the reason for the solar panels) would mean that any tests that rely on AC hum may not work.? The loud "squeal" when you touch pin 3 (Ashhar Farhan got the pins backward) could be from the loudest noise source in your cabin: the solar panel controllers.? The solar panels could drown out any of the 60 cycle fields from the inverters.? The fact that you can transmit and receive means that it is working.? The reduction in receive signal may be from the AGC losing connection.? Try jumpering around the AGC, or better yet is to remove and jumper to see if the signal goes up. 73 Evan AC9TU |
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Re: Upload sketch
Jerry,
I would go to the Windows Device Manager (right-click on the Windows Start Icone) and verify that the CH340 driver is connected and the com port assigned.? It should show up under Ports (Com & LPT).? Also, note that you need to have the Nano connected BEFORE you open the IDE for communication.? Not all software will recognize an added drive after it is opened. 73 Evan AC9TU |
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Re: Upload sketch
At least on Linux, this sometimes happens to me. No real solution - just
turn on the arduino and upload the firmware fast (between 1 to 3s). It works for me. Rafael On 5/14/21 6:21 PM, jerry@... wrote: All,V6. After downloading it from github, loading it into the Arduino IDE andbeing generated by a SMPS in one of its rails.-- |
Trystan G0KAY
Gerard
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