Re: V6 TFT ADAPTOR by G8DJM
Some of these displays dont play well with the onboard 3.3v regulator. Bypassing it and using an external 3.3v regulator eliminates any potential problems there.
Regards
Brian_____MM0BEF
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Thanks Gary,
David has fixed the error. Some of these displays dont play well with the onboard 3.3 regulator. Bypassing it and using an external 3.3v regulator eliminates any potential problems there.
Regards
Brian_____MM0BEF
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David,
Looks like you have the L78L33 regulator wired incorrectly in the schematic.? You want Vin from 5V Raduino to generate 3.3V for the LV side of the level shifter.
Why supply the display module with 3.3V derived from the same 100mA regulator instead of using the? display board regulator?? I'd understand if trying to beef it up and have better cooling.
The level shifter from 3.3V to 5V (raduino) is not needed as the VOH meets VIH requirements.
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Re: V6 TFT ADAPTOR by G8DJM
And thanks from David G8DJM.
Regards
Brian_____MM0BEF
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Thanks for suggestion. Im going to use the logic level shifter suggested by David G8DJM with a 3.3v regulator.
I tried 1k in series with the data lines but that was not good enough so i was going to try voltage divider with 4k7 and 10k resistors but Davids suggestion is better for me
Regards
Brian_____MM0BEF
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Re: V6 TFT ADAPTOR by G8DJM
Dont know how i missed that. Thanks Terry.
Regards
Brian_____MM0BEF
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Re: V6 TFT ADAPTOR by G8DJM
Re the schematic, the 3.3v regulator is shown wired backwards.
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Thanks again for this david. This should fix most of our problems. Great work.
Best Regards
Brian_____MMOBEF
_______________________________________
David's original message:
?David S
9:29pm???
Hi all.? A belated Happy New Year. There's been quite a few requests for help with the TFT for the V6, the ones available in the wild are hit and miss.? I've now got 5 of the 2.8 TFT obtained from 3 vendors over the last year or so.? They seem to be the worst thing out at raising ones blood pressure with frustration trying to get them to operate correctly.? Of the original 3 only 2 will ok correctly with the Blue Pill yet all of them are fine with a Teensy 3.2. I have also been watching with interest progress of the code for the V5 and then the V6 with a view to upgrading my early V3, more frustration with both types of display.? The TFT would be a great addition, so that's the way I'm going,? hence ordering some new versions. I've spent a troubled few days trying to coax one of the TFT's no go, the code assembles loads correctly,the display is wired up ok, I know it functions with the Blue Pill so back to basics.
I tested the TFT with a level converter, easy to do and magically it functions. So her's my thoughts to share with others it may help. You can find the schematic here??/g/BITX20/files/V6%20TFT%20Adapter
This is intended hopefully to assist with the problems encountered when trying to obtain a suitable TFT to use with the Ubitx V6 code.? Very many of these displays available from China are advertised as 3.3/5v (operation ?), they will run with either a? 3.3 or 5v supply but will only work with 3.3v logic signals. When wired as in V6, and running the code, the display will show only a blank white screen.
?
The idea is that this should act as an interface directly between the lead from the raduino and the actual display in use, no messing about with your Raduino.
Hope this is helpful to someone.
David S
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Excelent work and much appreciated. Been really struggling with this on a V5 and this will fix it.
Thanks again
Best Regards
Brian_____MM0BEF
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Hi all.? A belated Happy New Year. There's been quite a few requests for help with the TFT for the V6, the ones available in the wild are hit and miss.? I've now got 5 of the 2.8 TFT obtained from 3 vendors over the last year or so.? They seem to be the worst thing out at raising ones blood pressure with frustration trying to get them to operate correctly.? Of the original 3 only 2 will ok correctly with the Blue Pill yet all of them are fine with a Teensy 3.2. I have also been watching with interest progress of the code for the V5 and then the V6 with a view to upgrading my early V3, more frustration with both types of display.? The TFT would be a great addition, so that's the way I'm going,? hence ordering some new versions. I've spent a troubled few days trying to coax one of the TFT's no go, the code assembles loads correctly,the display is wired up ok, I know it functions with the Blue Pill so back to basics.
I tested the TFT with a level converter, easy to do and magically it functions. So her's my thoughts to share with others it may help. You can find the schematic here??/g/BITX20/files/V6%20TFT%20Adapter
This is intended hopefully to assist with the problems encountered when trying to obtain a suitable TFT to use with the Ubitx V6 code.? Very many of these displays available from China are advertised as 3.3/5v (operation ?), they will run with either a? 3.3 or 5v supply but will only work with 3.3v logic signals. When wired as in V6, and running the code, the display will show only a blank white screen.
?
The idea is that this should act as an interface directly between the lead from the raduino and the actual display in use, no messing about with your Raduino.
Hope this is helpful to someone.
David S
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Hello,
This email message is a notification to let you know that the following files have been uploaded to the Files area of the [email protected]
group.
Uploaded By:
David S <dsatn04@...>
Cheers,
The Groups.io Team
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He has the same results either using a keyer or a straight key, although it isn't clear to me whether it is happening with the internal keyer and a set of paddles as opposed to an external keyer. He describes it as having to "turn it on" by sending a dit or a dah (they result in the same truncated did on the output) and then when the relay is engaged sending is normal. it sounds like it is sending something as the transmit relay engages, and again when it disengages, so even if he toggled the relay on before sending, he would get a burst of RF just like he does when it times out at the end.? I'll suggest he play with the CW delay, but it seems to output that RF whenever it times out, anyway.
He is a long-time CW op and currently an NCS on a CW traffic net.
=Vic=
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Re: New uBITX Ver. 6 Assembled Today
After doing some tests and working with a local Elmer (thanks Bill) we have confirmed the v6 is transmitting we noticed the audio was weak and muffled so I¡¯m going to upgrade the mic and work on improving the antenna. Thanks for all the help and advice.
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On Jan 10, 2020, at 6:05 PM, Ted via Groups.Io <k3rta@...> wrote:
? Well, there is this........? an end-fed multibrand using a trap.
http://www.infotechcomms.net/downloads/Multi_band_EFHW.pdf
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What compiler are you using?\
Jack, W8TEE
On Sunday, January 12, 2020, 10:33:37 AM EST, Bob Bennett via Groups.Io <bobsmacbox@...> wrote:
I use the Raspberry Pi as one of my main computers for projects. It¡¯s my mini-desktop
--
Bob
NZ2Z
-- Jack, W8TEE
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I use the Raspberry Pi as one of my main computers for projects. It¡¯s my mini-desktop
--
Bob
NZ2Z
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Brian, to get mine to work I used 1k2 series resistors on all the data lines connected to the TFT and reduced the VCC to the TFT by connecting the 5V through a couple of series Si diodes. It would appear that some of these SPI TFTs work happily with a VCC of 5V and TTl data levels while others do not.
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I just let the laptops inbuilt mic do the work from the speaker. I connect a normal audio cable from laptop to the mic and let the usb cable do the ptt. The ubitx cables were designed to work without any special connectors. - f
On Sun 12 Jan, 2020, 12:33 PM Mike KD7ZPC, < memcki@...> wrote: Hi Paul,
I ran in to issues with the laptop's mic-in setup. The audio plug on the laptop tries to be too clever, and functions as either a mic or a headphone jack, and there's only the one. I had a USB soundcard dongle from a Christmas Light LED project, but the mic-in on that one was really a headset jack. That would short out the mic cord from the V6 so that it would go into transmit mode as soon as I plugged it in. I finally had to order an even cheaper sound dongle so that it had a simple mic-in and phono-out pair of jacks (If it's more than $8.00 on Amazon, it's probably too fancy. The one that works for me was $6 or $7. :-) ). I connected the V6 via USB, and the mic and phone from the V6 to the simple dongle, and then configured WSJT-X to use FT-817 CAT control and the correct audio in and out, and away it went.
I do seem to have to try a couple of times to get the software to connect to the com port each time after I've had the radio disconnected and the laptop in sleep mode, but that's been mostly just an irritation so far. I've been mainly operating WSPR so far but the set-up is the same up to the point you choose WSPR over FT8. You can generally find me running on 40M in the evenings.
Don, KM4UDX, who is pretty active on this group has been a really big help.?
Cheers!
~Mike W7SQL ex KD7ZPC
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Vic
He didn't say he was using strait key or paddle, but it seems he is describing normal behavior if the op doesn't compensate in straight key mode. I have made hundreds of cw contacts using my v4, but its different than the best qsk rigs with electronic TR like the qcx or k2 etc. I even have to adjust with my yaesu that uses a relay. There is a cw delay setting on v4 stock firmware, I found its default value works best for me.
73 curt
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Thanks...hope you enjoy it!
Jack, W8TEE
On Saturday, January 11, 2020, 10:54:57 PM EST, Bob Bennett via Groups.Io <bobsmacbox@...> wrote:
Thanks to all. I was able to update the ubitx with my Mac. I changed the usb connection from the mac and connected it direct to the Raduino card.
Again, thanks to all.
Now to work on the filters to see if I can get rid of the hash noise
And, Jack, your book came today ;-)
--
Bob
NZ2Z
-- Jack, W8TEE
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I do not have a V6, but a friend who is not on the group has and is having some issues with CW operation. This is a quote from his email to me. Have others ruin into this and is there a fix? I don't see this issue on my V4:
The V6 sends a short dot, maybe a 1/4 dot, when keyed; then there is a short space, maybe a 1/4 space; then it sends good code until you stop sending; then there is a short space, maybe a 1/8 space; then, finally, a short dot, maybe a 1/8 dot.? I can see it on my spectrogram.? (Maybe I can figure a way to capture the spectrogram and send it to you.)? So, it looks like the first character is being truncated, but that is really not the case; it's sending extra characters at the start and end of sending.? After you get passed the initial keying it sends very good code..? The extra character at the end of a series of characters can be lived with; however the extra character at the being makes is very difficult.? It's like in the army using the BC610 transmitter:? you had to turn the transmitter on and then send -- a sort of missing push to talk deal? It's like that with the V6 except that when you turn the V6 on it sends the extra small dot character..? It does this whether the first character begins with a dot such as "R" or a dash such as "Q".
?
This must be fixed before the thing can be used in any meaningful way on CW.
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Vic WA4THR
Mick
Bob Bennett