Re: Raduino schematic additions
The "wire up" page on the hfsigs webpage still says to ground the brown wire to calibrate. Ashhar, can I suggest that this be corrected.?
Regards
Simon VK3ELH
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Re: Recieve only with a non resonant antenna
Yes, receiving with any antenna is fine.? It will not harm anything.
On Jan 29, 2017 6:09 PM, < davidzdeb@...> wrote: I am assuming this is OK, but wanted to double check.? I do not have a resonant antenna set up yet.? Would it be OK to listen only on a random length longwire?
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Re: Capacitance higher in LC of VFO
It was Raj in Bangalore (who has what has to be among the coolest of call signs!)
On Friday, January 20, 2017 9:35 AM, Rajendra Kumar G G <vu2zap@...> wrote:
I am very pleased with myself!! got the drift down to +-20Hz, even blowing on the board changes it by 50Hz momentarily.
Changed C91-96 with C0G/NP0 SMD's and it was almost perfect! Choose 5% types.
I changed the trimmer C93 with a murata Green.
then:
Old rule of the thumb I followed..
Low inductance higher capacitance makes a stabler VFO!
I reduced the original 9.5uH yellow coil to about 6uH.
Added 120pF across C95
Then I paralleled 2-3 MV209's across D9. You can parallel them to suit your tuning range. 200 or 300 Khz!
You need a frequency counter for this mod.
73
--
Raj, VU2ZAP
Bangalore, India.
On Sunday, January 29, 2017 1:12 AM, John Backo via Groups.Io <iam74@...> wrote:
Bill Meara in his latest podcast mentioned that someone recently had talked here about a rule of thumb regarding VFO's. It was an Indian ham as I recall (but I can't remember his callsign either...and I searched for it!).
The most important thing stressed over and over in mounting traditional VFO's was to isolate the hand from the capacitor. There are numerous examples of this involving variable drives and non-metal spacers between the knob and the main capacitor. The reason is simple -- it is to minimize the effect of the hand on capacitance in the VFO circuit.
If a VFO has an LC circuit which is high in inductance and low in capacitance, the percentage effect of stray capacitance (including that from the hand) is increased. So, as a rule of thumb, VFO's should have an LC circuit which is relatively higher in capacitance and relatively lower in inductance. Stray capacitance has a much greater effect on stability than stray inductance...and the hand has no effect on inductance, of course! By doing this the stray capacitance tends to be swamped out as a factor in stability.
It is a rule derived from common sense and experience. All the older LC VFO's observed and compensated for this fact...especially the multi-band consoles which were in everybody's home until the mid-1950's, when the transistor radio and portables started to appear. I remember that. I tore a bunch of them apart and repaired many. I also remember the elaborate ways the tuning knob was isolated from the main capacitor in the VFO. It's still true today. The LC tank circuit in a VFO should be weighted towards capacitance and not inductance to minimize the effects of stray capacitance.
FYI
john
AD5YE
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isolating BNC jack from metal case
Hello,
Is it necessary to isolate the BNC jack if using a metal enclosure?
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Recieve only with a non resonant antenna
I am assuming this is OK, but wanted to double check.? I do not have a resonant antenna set up yet.? Would it be OK to listen only on a random length longwire?
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Re: Raduino schematic additions
Very nice. Randy. I think it was needed. FB
I note that if A2 does not work, it is easy to reassign it to A0 or A1. But that may need more revision in setup to configure those pins.
That may be what happened to those who used the brown wire initially...if it is configured high internally, grounding
it will short out the nano after a while. Of course, putting 12v on any pin will do the same thing...only faster.
john
AD5YE
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Re: Capacitance higher in LC of VFO
Ladies and Gentlemen -- The Master speaks. No bad English either.
Check out his webpage. It is truly a world-class source. Some of it is only in Brazilian...but that doesn't matter a whole lot.
Incidentally, the VFO that he is referring to is the dual-mcu DDS one from Hamradio India (version 4). A good choice for many.
PY0OOH and F8VOA have adapted this to the BITX excellently. (It's in the files).
john
AD5YE
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Hello, no offense intended, and I hope none was taken. I was simply saying that if you have advice on how to fix something that might benefit the group, it would be great if everyone here could understand it. Myself, I only speak a little German, and only because some of the older members of my family (all of whom are now deceased) spoke it, so I picked up a little bit of it. Can't make heads or tails of my great-grandfather's Lutheran Gesangebuch, though - that fraktur writing gives me a headache if I try to read it too long!
73, Rich KC8MWG
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I bought 2 raduinos., ya know, just in case. One worked, one did not. It just lit up, no display. I reprogramed it. Nothing. I could hear the board laughing at me as I tried? to desolder the nano from the break out board. Before giving up, I tried adjusting the trim pot on the board. Voila! I turned it all the way clockwise and my raduino now displays numbers and works just fine. I hope this helps some of you out there.
Mark ?KC1GNH
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Re: VFO & Digital Read out Does Not work (where do I get software for the
Bob,?
I know this is very simplistic, but have you adjusted the contrast pot under the display? Without it adjusted correctly you won't see anything but squares on your display. Just a thought. Joel? KB6QVI
toggle quoted message
Show quoted text
On Jan 29, 2017, at 3:05 PM, B S < saaint@...> wrote:
THANKS!
I just compiled and UPLOADED the attached program.? DOES NOT DISPLAY
see attached Photo
BOB
K6YN
Does this work on your Nano:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface
pins
LiquidCrystal lcd(12,?11,?5,?4,?3,?2);
void?setup()?{
??//
set up the LCD's number of columns and rows:
? lcd.begin(16,?2);
??//
Print a message to the LCD.
? lcd.print("hello,
world!");
}
void?loop()?{
??//
Turn off the display:
? lcd.noDisplay();
??delay(500);
??//
Turn on the display:
? lcd.display();
??delay(500);
}
From: dj0hf <dj0hf@...>
To: [email protected]
Sent: Sunday, January 29, 2017 4:04 PM
Subject: Re: [BITX20] VFO & Digital Read out Does Not work (where do I get software for the
Hi Bob,
the simple 'Hello World' sketch normally outputs to the serial port and so wouldn't show anything onthe green screen unless the appropriate libraries have been included and the program extended to include the output to the green screen.
So although it doesn't help you find the problem, your display may not be defective.
Good luck,
Ian
DJ0HF/G3ULO
Am 29.01.2017 um 21:29 schrieb B S:
Thank again for all the help!
I FINALLY got the complied RADUINO sketch to UPLOAD to my NANO..? When plugged into my radio it TUNES the receiver but there is still NO digital read out on the JHD162A green screen.
I downloaded a simple "HELLO WORLD" sketch from ARDUINO webpage and uploaded that sketch.? Still no reading on the green screen.
I am concluding that my screen is bad..? Is this a reasonable assumption?? ??
IS the JDH659a LCD Display module a direct replacement fit for the JDH162a LCD display?
BOB
K6YN. ?
These are all warnings. They have little to do with the running of the program. If it works, OK. If not, you need another configuration as already mentioned.
john
AD5YE
<DISPLAY.jpg>
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Device Manager is telling you the truth. The CH340G driver is loaded and connected to COM 5.
Now there are 3 problems left: 1) Will the program compile correctly? 2) Is the proper device selected? 3) Is the proper COM port selected and attached to avrdude?
Check compilation by using the up-arrow in the menu. This will compile the program but will not attempt to upload it. You can also make the messages show up so you can see what is going on. You can also try to compile the "blink" program and upload that. Note that the blink program only flashes a led -- it does not provide a driver for any lcd.
Check that the proper device is connected in the Tools menu. Select "nano" and be sure it is greyed out so that the IDE knows it. It will also show up in the main Tools menu. Click on it with the mouse a few times if unsure.
Right under that is another menu item for COM ports. Click on that and be sure that "COM 5" is an option. If so, select that.
Now try another compile and upload. If you are still getting timeout messages...well the answer is elusive but I have found that often it has to do with reset timing. Holding reset for a few ms. at the beginning of upload is vital to success. It was mandatory in the early Arduinos; avrdude is supposed to do that and the CH340 provides a proper interface. I have a suspicion that avrdude has not quite kept up with the times though and doesn't always assert that reset properly. You can do it if you wait until the message appears that compiling has finished and uploading is about to begin. Manually hold down the reset button until then, or shortly thereafter. It is tricky but it often works. This problem with the reset is everywhere in Arduino, and avrdude gives only a generic (unhelpful) message about it.
I suspect that this may be your fundamental problem. But there are a host of others. The IDE is a bit flaky as Jack and others have noted.
john
AD5YE
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Re: VFO & Digital Read out Does Not work (where do I get software for the
THANKS!
I just compiled and UPLOADED the attached program.? DOES NOT DISPLAY
see attached Photo
BOB
K6YN
toggle quoted message
Show quoted text
Does this work on your Nano:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface
pins
LiquidCrystal lcd(12,?11,?5,?4,?3,?2);
void?setup()?{
??//
set up the LCD's number of columns and rows:
? lcd.begin(16,?2);
??//
Print a message to the LCD.
? lcd.print("hello,
world!");
}
void?loop()?{
??//
Turn off the display:
? lcd.noDisplay();
??delay(500);
??//
Turn on the display:
? lcd.display();
??delay(500);
}
From: dj0hf <dj0hf@...>
To: [email protected]
Sent: Sunday, January 29, 2017 4:04 PM
Subject: Re: [BITX20] VFO & Digital Read out Does Not work (where do I get software for the
Hi Bob,
the simple 'Hello World' sketch normally outputs to the serial port and so wouldn't show anything onthe green screen unless the appropriate libraries have been included and the program extended to include the output to the green screen.
So although it doesn't help you find the problem, your display may not be defective.
Good luck,
Ian
DJ0HF/G3ULO
Am 29.01.2017 um 21:29 schrieb B S:
Thank again for all the help!
I FINALLY got the complied RADUINO sketch to UPLOAD to my NANO..? When plugged into my radio it TUNES the receiver but there is still NO digital read out on the JHD162A green screen.
I downloaded a simple "HELLO WORLD" sketch from ARDUINO webpage and uploaded that sketch.? Still no reading on the green screen.
I am concluding that my screen is bad..? Is this a reasonable assumption?? ??
IS the JDH659a LCD Display module a direct replacement fit for the JDH162a LCD display?
BOB
K6YN. ?
These are all warnings. They have little to do with the running of the program. If it works, OK. If not, you need another configuration as already mentioned.
john
AD5YE
|
Yes, Com Port is seen. And all libraries are installed. The sketch is compiling, but upload does not work. I already installed a nano, but will take some time to arrive. In the meantime I finish the case and the wiring. I have different kind of Arduinos laying around, because I have some flightcoontrolers for my multicopters, that are arduino based and also the ESCs that control the motors are arduino based. So I also have some different programers. Maybe it is a driver issue, because I have installed several FTDI drivers and they probably do not coexist very well. Tomorow I will try on another PC and we will see, if it works.
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Maybe a friend has a known good Arduino of some sort, try talking to that first from the Arduino IDE. ?And/Or get a couple Nano compatibles from some website. ?Cost can be down as low as $3 USD, and likely a good idea to have a spare Nano lying about even if this one does come back to life.?
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Re: Knob for that tiny volume pot?
Bill and Simon - make that a three-way contact BX40 to BX40! ? ?Hopefully, mine should arrive soon. Norm vk5gi McLaren Vale ? ?SA
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This problem of missing serial ports has been a plague in the Arduino world for most of ten years. It is even worse if using Arduino IDE on a Mac. A google search finds MANY reports and multiple fixes, but none that are AHA! definitive.?
Very irritating.
Helmut - Windows is seeing the device and loading the correct driver and creating a serial comm port 5. All good.
Have you included the library for the Si5351? Nothing will work until you add the library for the controller. The Nano has a boot loader installed and should not need use of a programmer.
toggle quoted message
Show quoted text
On Jan 29, 2017, at 12:25 PM, Jack Purdum via Groups.Io < econjack@...> wrote:
I have that same "no port showing up" problem every day. I've looked for a good reason for it, but can't figure it out. My fix: close down the IDE and then do a complete reboot of the system, from total power off to turning the computer back on. Then, the first thing I do is open the IDE and check the COM port. If none is selected, I select the COM port I have dedicated to the IDE. That usually solves the problem. Why? I don't have a clue. (If the COM port you select is in use with some other device, clearly that's not going to work. I had that kind of port conflict in the past, too.)
Let me know if it works for you.
Jack, W8TEE
From: Helmut OE4HDS <hs@...>
To: [email protected]
Sent: Sunday, January 29, 2017 1:38 PM
Subject: Re: [BITX20] Raduino dead?
On Sun, Jan 29, 2017 at 10:18 am, Jack Purdum wrote: Did you run the proper install program in the drivers subdirectory? ?Thanks Jack, I think there could be a possible cause for my problem. When I connect the Nano to an USB port, it shows up as COM5. So I just used COM5 in the Arduino ide. Is there anything else I have to do?
Got my old programer connected to the Nano, but get no Com port shown up. Have to use AVRDude, but hate to mess around with commandline paramaters. Have to look if I can find some GUI for it. Would prefere to just use the arduino ide though.
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Yes. I also tried to install arduino new from scratch.?
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Re: VFO & Digital Read out Does Not work (where do I get software for the
Does this work on your Nano:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12,?11,?5,?4,?3,?2);
void?setup()?{
??// set up the LCD's number of columns and rows:
? lcd.begin(16,?2);
??// Print a message to the LCD.
? lcd.print("hello, world!");
}
void?loop()?{
??// Turn off the display:
? lcd.noDisplay();
??delay(500);
??// Turn on the display:
? lcd.display();
??delay(500);
}
From: dj0hf <dj0hf@...>
To: [email protected]
Sent: Sunday, January 29, 2017 4:04 PM
Subject: Re: [BITX20] VFO & Digital Read out Does Not work (where do I get software for the
Hi Bob,
the simple 'Hello World' sketch normally outputs to the serial port
and so wouldn't show anything onthe green screen unless the
appropriate libraries have been included and the program extended to
include the output to the green screen.
So although it doesn't help you find the problem, your display may
not be defective.
Good luck,
Ian
DJ0HF/G3ULO
Am 29.01.2017 um 21:29 schrieb B S:
Thank again for all the help!
I FINALLY got the complied RADUINO sketch to UPLOAD to my
NANO..? When plugged into my radio it TUNES the receiver but
there is still NO digital read out on the JHD162A green
screen.
I downloaded a simple "HELLO WORLD" sketch from ARDUINO
webpage and uploaded that sketch.? Still no reading on the
green screen.
I am concluding that my screen is bad..? Is this a reasonable
assumption?? ??
IS the JDH659a LCD Display module a direct replacement fit
for the JDH162a LCD display?
BOB
K6YN. ?
These are all warnings. They have
little to do with the running of the program. If it
works, OK. If not, you need another configuration as
already mentioned.
john
AD5YE
|
Tried your initial programmer setting also?
Sent from my iPhone
On 29 Jan 2017, at 22:00, Helmut OE4HDS < hs@...> wrote:
toggle quoted message
Show quoted text
I tried everything. Rebooted my PC, uninstalled drivers, installed drivers. Whenever I want to install a driver from the drivers folder in the arduino folder, it tells me that the best driver is already installed It shows up as USB-SERIALCH340.
I will try on another PC. If that does not work, I give up. Already wasted way too much time.
|
Re: VFO & Digital Read out Does Not work (where do I get software for the
Hi Bob,
the simple 'Hello World' sketch normally outputs to the serial port
and so wouldn't show anything onthe green screen unless the
appropriate libraries have been included and the program extended to
include the output to the green screen.
So although it doesn't help you find the problem, your display may
not be defective.
Good luck,
Ian
DJ0HF/G3ULO
Am 29.01.2017 um 21:29 schrieb B S:
toggle quoted message
Show quoted text
Thank again for all the help!
I FINALLY got the complied RADUINO sketch to UPLOAD to my
NANO..? When plugged into my radio it TUNES the receiver but
there is still NO digital read out on the JHD162A green
screen.
I downloaded a simple "HELLO WORLD" sketch from ARDUINO
webpage and uploaded that sketch.? Still no reading on the
green screen.
I am concluding that my screen is bad..? Is this a reasonable
assumption?? ??
IS the JDH659a LCD Display module a direct replacement fit
for the JDH162a LCD display?
BOB
K6YN. ?
These are all warnings. They have
little to do with the running of the program. If it
works, OK. If not, you need another configuration as
already mentioned.
john
AD5YE
|
Joel Caulkins/N6ALT
