Two more things to add to Gary's comments: 1) On some Nano clones, if the Compile phase works but it "locks up" on the Upload, Check the Tools menu to see if you have a Processor choice as seen here:
????? Note the second choice "Old Bootloader". For some clones, you need to select that option, although the default is the first option.
2) I spent almost two hours trying to figure out why I couldn't Compile/Upload a sketch, because the same sketch had worked just ??? fine the day before. It turned out that the cable no longer worked. I replaced it with a new one and I was back in business. I just ??? assumed the cable was OK. I've got more bite marks on my butt from faulty assumptions than I care to acknowledge.
Jack, W8TEE
On Thursday, January 24, 2019, 9:44:28 AM EST, Gary Anderson <gary.ag5tx@...> wrote:
Mike,
From your comment, I can't tell if you were successful or still having problems.
You successfully compile and link.?
Issue is with the loader. Loader thinks you have Nano on COM4 (COM4 selected as port in the Arduino IDE).
But the nano may be on a different COM port.
Using the device manager or the like in your OS, see what is actually on the Com Port.? It may not show up as a Nano, but something like "USB-SERIAL CH340"
... Assume you have the CH340 drivers installed.
Also on USB cables.? Some you have around may just be charging cables (no data). This won't work for obvious reasons, once you understand that.
However i have a handful of real data cables that work great with other devices that don't play well with the Nano that was shipped from HF Sigs.
I had to dig around to find a cable that works with my particular nano.
Rgds,
Gary
|
Mike,
From your comment, I can't tell if you were successful or still having problems.
You successfully compile and link.?
Issue is with the loader. Loader thinks you have Nano on COM4 (COM4 selected as port in the Arduino IDE).
But the nano may be on a different COM port.
Using the device manager or the like in your OS, see what is actually on the Com Port.? It may not show up as a Nano, but something like "USB-SERIAL CH340"
... Assume you have the CH340 drivers installed.
Also on USB cables.? Some you have around may just be charging cables (no data). This won't work for obvious reasons, once you understand that.
However i have a handful of real data cables that work great with other devices that don't play well with the Nano that was shipped from HF Sigs.
I had to dig around to find a cable that works with my particular nano.
Rgds,
Gary
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
Only three relays need to be replaced KT/1/2/3
Raj
At 24-01-19, you wrote:
toggle quoted message
Show quoted text
I will also say you will have to
perfect your desoldering skills to remove all 5 relays :)? I thought
I knew how to desolder before I started... but clearly I was deluding
myself.
I nearly gave up but watched a couple youtube video's and so someone much
better than I doing it and managed to learn the way to do it with a
simple suction vac and desoldering braid.. though I was really wishing I
had one of those hakko electric vacuum desoldering tools :)
On Tue, Jan 22, 2019 at 06:55 PM, Dave Space wrote:
- I actually did replace all of the relays with axicom relays.? I
bought some parts to build an external filter to see how that does (not
due to arrive for a while).? I'm transmitting SSB when doing the
test.
- I also bought the parts to replace L5 and L7 not due to arrive for a
little while either.? Any chance the mod suggested for the v5 board
would solve this harmonic?
|
Re: Spurs/Harmonics fixes for v4 based on v5 board design?
I did want to say the Axicom relays I'm not sure if they helped a lot at least with my less than adequate ability to measure at the moment with the rtl-sdr or scopt fft.
IMD seemed down a little within 0.75 MHZ away but the big harmonic at 21MHZ didn't seem to change.
I will also say you will have to perfect your desoldering skills to remove all 5 relays :)? I thought I knew how to desolder before I started... but clearly I was deluding myself.
I nearly gave up but watched a couple youtube video's and so someone much better than I doing it and managed to learn the way to do it with a simple suction vac and desoldering braid.. though I was really wishing I had one of those hakko electric vacuum desoldering tools :)
toggle quoted message
Show quoted text
On Tue, Jan 22, 2019 at 06:55 PM, Dave Space wrote:
I actually did replace all of the relays with axicom relays.? I bought some parts to build an external filter to see how that does (not due to arrive for a while).? I'm transmitting SSB when doing the test.
I also bought the parts to replace L5 and L7 not due to arrive for a little while either.? Any chance the mod suggested for the v5 board would solve this harmonic?
On Tue, Jan 22, 2019 at 06:43 PM, Jerry Gaffke wrote:
21.5mhz is the third harmonic of 7.15mhz, we can expect some trouble there,
though -20dBc is worse than I recall seeing on measurements posted here for other uBitx's.
Moving to the axicom relays might help this considerably, or any of the other mods
proposed for fixing the ubitx board layout issues in the transmit low pass filters.
Or could just add an external low pass filter between rig and antenna
when operating on 40 meters to fix this.
I'd guess you are transmitting in CW mode, which may be driving the final too hard.
You might try reducing the drive to the final at RV1, see if that helps.
Make a mark first so you can remember how it had been set originally.
Jerry
On Tue, Jan 22, 2019 at 05:43 PM, Dave Space wrote:
So I remeasured my ubitx this time with my oscilloscope FFT.? Not sure how accurate those are?
It shows a lot less spurs but does still show a spur only -20db down when transmitting at 7.150MHZ somewhere around 21.5MHZ or so (I didn't zoom in too far so plus or minus ~500khz .? (I tested connected to the scope through coax -40db attenuator).
It tends to confirm of the rtl-sdr which saw one about -30db down or so.? I didn't notice the large amount of IMD within 750khz range as I did with the RTL-SDR though there was a lot of noise (might have to up the averaging to see if I can filter that out).
|
Hi Vic
I have made the bezels Vic I have flat ones for the 2.8 and 3.2" nextion. They are 3D printed. The Indian kit that I got used didn't have a bezel.
If you want one I will send it to you. These were printed a bright orange then lightly sprayed with black dollar store paint. They look like dark wood grain.
The larger bezel is on thingiverse if you have a 3d printer.
|
Put the BITX40together with the 10-turn pot. Worked for
a few minutes and then phoey. At first I heard some 40Mactivity and was enthusiastic but then got some turn-on ver notice and after that I got a 40M running list of up-down frequencies. No more audio, no more reaction to the 10-turn
pot. The board and Raduino were nt touched.
On a whim, I changed the 10-turn pot for the one that came with the kit and the kit and still no audio. The skipping around in frequency is still there. I do not want to chase my tail around trying to find the problem. I expected a working radio like the uBitx was
when I put it in a box. I will sell the BITX40 for $60 shipped stateside. It's in
a "box" with the platform and front/back panels. Nosides or top. Only modification to the kit overall is that used a UHF connector instead of the BNC connector. NO mods to the board or the Raduino... It's all there ready to play with but I am at my age not ready to play with it. Anyone stateside interested? Will include the 10-turn pot, the unused BNC connector snd? the unused mic/ptt cables which were not connected. The mic parts will
also be included, the mic was not assembled...
Bob ¡ª KK5R
On Tuesday, January 22, 2019, 6:40:52 PM EST, Bob Lunsford via Groups.Io <nocrud222@...> wrote:
Just got the BITX40 today. I had the uBitx before and sold it to
a man who wanted to run digital. It was a dream to put together,
no problem whatsoever.
But the picture on the wire-up page for the BITX40 does not
show the same thing for the Raduino that I got today. I do not
want to assume too much but it seems the 5-pin connector
plugs into the 16-pin connector but it's not clear if it's to be
put in on one or the other end. The 16-pin connector is
labeled P3. Off to one end of the board is U3 which is a
3-pin regulator, it seems. I think I know where the 5-pin
connector goes but want to make sure...
Bob ¡ª KK5R
--------------------------------------------
Subject: Re: [BITX20] ubitx 40 Connecdtion
Date: Tuesday, January 22, 2019, 6:12 PM
Bob,
?BITX and BITX40 are different radios.? Which
do you have?
--
www.bitxmap.com
|
?I did a quick search for LM386 audio amps and came up with this one. ? ?the more you buy, the lower unit price gets. ?Not a bad deal, with free shipping.
?I think it'll cost me a bit more to assemble such an item, even though I have a boatload of LM386 chips.
?its the caps and control, plus board that makes it that way.
?Though doing my own, I can set the gain from 20 to 100, and in between of course.A reasonable board to add audio if yours is blown....
|
toggle quoted message
Show quoted text
On Thu, Jan 24, 2019 at 4:30 PM Mvs Sarma < mvssarma@...> wrote: some cases, seller would supply along with Case. See this case from India. Nextion is shown for showing clarity? and not supplied. Thease are from vu3pop from India. I had seen them in Lamakaan amateur radio club annual eyeball meet 19/20 Jan2019
On Thu, Jan 24, 2019 at 3:14 PM Vic WA4THR via Groups.Io <vhklein= [email protected]> wrote: I am interested in the bezel around the Nextion display in the white case. Did it come with that case or did you get it somewhere?
=Vic=
|
Re: Error in Ubitx Mic Amp circuit?
It depends on the value of the cap. Electrolytics have larger values and should be better on low frequencies, but others may be used. You may want to replace it, but you may want to lower R63 to have more gain. I lowered to 24ohm. However to increase average SSB power I have added a compressor, SL6270C at the mic input so I can just whisper with any dynamic mic and have a QSO instead of trying to increase average power talking speaking louder and likely producing more distortion.
Il 14/gen/2019 18:06, "Uwe , DF1UB" < jento23@...> ha scritto: Hi,
is there an error in the circuit of the mic amp or just the wrong Cap build in?
the cap C63 at the collector of Q6 should be 1? polarized, but on the board is a ceramic C.Is this the fault of low mic signal?
|
toggle quoted message
Show quoted text
On Thu, Jan 24, 2019 at 4:30 PM Mvs Sarma < mvssarma@...> wrote: some cases, seller would supply along with Case. See this case from India. Nextion is shown for showing clarity? and not supplied. Thease are from vu3pop from India. I had seen them in Lamakaan amateur radio club annual eyeball meet 19/20 Jan2019
On Thu, Jan 24, 2019 at 3:14 PM Vic WA4THR via Groups.Io <vhklein= [email protected]> wrote: I am interested in the bezel around the Nextion display in the white case. Did it come with that case or did you get it somewhere?
=Vic=
|
some cases, seller would supply along with Case. See this case from India. Nextion is shown for showing clarity? and not supplied. Thease are from vu3pop from India. I had seen them in Lamakaan amateur radio club annual eyeball meet 19/20 Jan2019
On Thu, Jan 24, 2019 at 3:14 PM Vic WA4THR via Groups.Io <vhklein= [email protected]> wrote: I am interested in the bezel around the Nextion display in the white case. Did it come with that case or did you get it somewhere?
=Vic=
|
Good Morning, ? How would a person go about ordering one of these little gems?? ? ? 773, Rocco ¨C WU2M ? Sent from for Windows 10 ?
toggle quoted message
Show quoted text
From: KE2GKB via Groups.IoSent: Thursday, January 24, 2019 12:56 AM To: [email protected]Subject: Re: [BITX20] 2 New kits in stock! ? Some more info on the AGC.
It has been designed to slot right onto the uBitx V3 and V4 board with one trace cut and the scraping of solder mask off 3 traces. Instructions on location and placement will be provided with the AGC.
It lines up So you can solder it directly to the board with no RF leads or coax needed! The only wire to be ran is a single audio line from the VOL-H side of the volume control to the board. The board includes a Choke to help keep RF out of the audio amp. There is also an S-Meter tap after the audio amplifier on circuit. Does need per unit calibration but has been proven to work rather nicely!
Below is a pretty render for your enjoyment.
|
If you will only use the Raduino with a bitx remove the other 11 pins to prevent miswiring. Don¡¯t ask how I know this is a bad thing. ?
Mike Ai4ns?
|
Aargh. And after I read your instructions, I still did it.?
Thanks everyone?
On Wed, Jan 23, 2019 at 10:17 PM Jack Purdum via Groups.Io <jjpurdum= [email protected]> wrote:
You cannot have any library in the Arduino libraries subdirectory that contains the string "-master" at the end of the primary file name. Although written for the JackAl system, the download at titled "Installing the Software", which is a zip file, should help you understand how to install the libraries properly. When unzipped, read the document titled Library Installation Instructions.docx. It explains how to install both Arduino and Teensy libraries and why they are installed as they are. You need to obey the rules stated therein. If you do, I think you compile problems will go away.
Jack, W8TEE
Attached is the log of my multiple attempts to upload a sketch to the Nano. I only see the power led lit on the nano. What am I doing wrong?
mike
ai4ns
|
I am interested in the bezel around the Nextion display in the white case. Did it come with that case or did you get it somewhere?
=Vic=
|
Some more info on the AGC. It has been designed to slot right onto the uBitx V3 and V4 board with one trace cut and the scraping of solder mask off 3 traces. Instructions on location and placement will be provided with the AGC. It lines up So you can solder it directly to the board with no RF leads or coax needed! The only wire to be ran is a single audio line from the VOL-H side of the volume control to the board. The board includes a Choke to help keep RF out of the audio amp. There is also an S-Meter tap after the audio amplifier on circuit. Does need per unit calibration but has been proven to work rather nicely! Below is a pretty render for your enjoyment. 
|
Re: spurs & harmonics, whew!
please check the concerned band?? LPF (Post? linear). Analyse the filter components , for values , if you have any L C
meter on hand.
?
On Wed, Jan 23, 2019 at 11:52 PM Curt via Groups.Io <wb8yyy= [email protected]> wrote: I am going with Gordan Gibby's daughter board that just hosts 3 relays, mostly because my local club kitted this solution - and other than cutting traces there is little rework to the main board.? I need about 10 dB reduction of harmonics on 40 and 30 meters, and less on 80 and 20 meters to be in compliance.? (As there is reported variation in the Axicom relay approach, and different rigs require a different boost in rejection, it seems to not be the ideal approach to me - and I sense in quantity our approach costs less).?
I tried using a 45 MHz xtal filter between the bidirectional amplifier and mixer - every different way I could think of.? I even left both the series resistor and cap in place on the mixer side - no matter what I do I get a reduction of 40m CW transmit down to about 2 watts -- while no other band is affected.? At least one other rig in our batch is acting like this.? So when the final mixer is biased for CW 'direct PLL making RF' - it does not cooperate with changes on the IF port.? Have not yet tried LC filtering - don't know what it will do.? I need about 10 dB here also to filter the unwanted mixer spur on some of the higher bands.?
No other issues with my v4 transceiver.? SSB works nicely using an old electret microphone originally used with a 2m HT.?
Curt
|
one can plug in the headphones before switching on and never use more than 10% or so of the volume control,and the chances of chip burning would be reduced.
I recollect , people are accustomed to13.8V, later think that 14 or 14.5 is marginally small.
we fail to understand the stress taken by TDA2822
On Thu, Jan 24, 2019 at 3:28 AM Jerry Gaffke via Groups.Io <jgaffke= [email protected]> wrote: Perhaps Bill's point was that pushing a stereo plug into a stereo jack
can somehow momentarily short one of the signals to ground.
A 4 ohm resistor between uBitx main board and the headphone jack would solve this
if that's of concern.
But I think all cases of momentary shorts blowing a TDA2822 involved a WX brand TDA2822.
We'll see if Raj corrects me on this one too.
Jerry, KE7ER
On Wed, Jan 23, 2019 at 12:41 PM, Jerry Gaffke wrote:
Maybe best to just make sure there isn't anything with a mono 3.5mm plug on it within easy reach.
|
You cannot have any library in the Arduino libraries subdirectory that contains the string "-master" at the end of the primary file name. Although written for the JackAl system, the download at hamradiodesigns.com titled "Installing the Software", which is a zip file, should help you understand how to install the libraries properly. When unzipped, read the document titled Library Installation Instructions.docx. It explains how to install both Arduino and Teensy libraries and why they are installed as they are. You need to obey the rules stated therein. If you do, I think you compile problems will go away.
Jack, W8TEE
On Wednesday, January 23, 2019, 11:06:21 PM EST, Mike Short <ai4ns.mike.spam@...> wrote:
Attached is the log of my multiple attempts to upload a sketch to the Nano. I only see the power led lit on the nano. What am I doing wrong?
mike
ai4ns
|
i suppose you are accustomed with arduino ide, Mike the files should be in a folder named as same ? the .ino file inside. ?once you plug in the nano, ? go to tools and configure the nano, and its com port. if the port is not recognized, perhaps you have to use the Ch340G driver.
later the port becomes visible. You may tick the right com port as indicated by your laptop. ?select programmer : arduino ide If these things are gone thro, ?perhaps no issue could be there.
all the best Mike ?regards sarma ?vu3zmv
?At times you have to select? atmeega328 old bootloadder .
Attached is the log of my multiple attempts to upload a sketch to the Nano. I only see the power led lit on the nano. What am I doing wrong?
mike
ai4ns
|
Raj vu2zap
_Dave_ AD0B
Bob Lunsford
.jpg)
Vic WA4THR