Re: Datkight Radio: Who's Building?
Its metric, I just assumed that.
I did the PTO using a older way plastic tube and meachnicals.
Lacking a handy printer it was the easy solution.
Allison
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Please use the forum, offline and private will go to bit bucket.
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Re: uBITX v6 -AGC and S-Meter
Aaron,
Dr. Lee developed two different S meter methods.? One uses an LM386 amp feeding the available "A7" input that does not require a separate Nano.? The other is, as you stated, using a second Nano that provides an S meter and other signal processing capabilities.
Here is a link to a page showing how to select the suitable capacitor for the LM386-based S meter that does not require a second Nano:
There are links to the circuits on this page.? I recommend using the Memory Manager software to set up the S meter values.
73
Evan
AC9TU
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I guess you could do this for the mode selection as well.
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Anthony, I don't know if you meant to respond to my inquiry or someone else's. I was thinking about a Lock button, much like on the uBITx V6 with the Nextion display shown on this link?. Something that would prevent the sBITx from transmitting even when the mic, keyer, or accidental text was typed in the UI for digital mode. I like the idea of the scroll for band selection. How hard would it be to create a fan out of the bands? Excuse my attempt to create this with a drawing....  Once the band selection button was selected, the optional bands would fan out from the main button and then collapse once selected. Andrew
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Re: Gtk-WARNING: cannot open display (./sbitx)
So I¡¯ve established that the sBitx boots up with the same SD card using the Raspberry Pi 4 or an old Raspberry Pi 3 that I had on hand. But using the Raspberry Pi 4 that came with the unit the sbitx.sh process does not start properly regardless of whether it is started by clicking on the sbitx icon or from the command line. Yet the RPi 4 *was* working two weeks ago. And furthermore when I swapped in my old RPi 3 the sbitx process started when it would not with the original RPi 4. Last but not least when I swapped the RPi 4 back in the problem¡ªthe sbitx.sh process starts but halts in mid execution (Gtk WARNING¡ªserver connection refused) remains. So a bad connection is unlikely.
Long story short, the Raspberry Pi 4 shipped with the unit has had some sort of failure in the first 100 hours. I¡¯d like to thing that there is some sort of firmware setting that would solve the problem. Has anyone any ideas? I was ready to share some microphone adaptations I had just finished but I am currently at an impasse.
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Re: Nextion 2.8 display for sale
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Re: Suddenly no receive on my sBitx - what are steps required to resolve this?
There is an assumption of software over hardware for failures.
There is a version of? software with a timing fix for the TX but it does not solve
all of the problems but it does help.?
Likely you may have to do board level repairs (mainboard) to replace finals and possibly
u3.? There may be other things as well.? A number of people have seen blown finals
and random other misbehavior of the transmitter section.? Its being worked but be aware
the solution(s) may involve circuit changes and code.
Allison
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Please use the forum, offline and private will go to bit bucket.
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Using the multifunction knob for scrolling through the bands makes great (and logical) sense for that function. I should have guessed that would be the approach.?
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As to band table display.? My preference is a general up/down button pair
that gets applied to the currently active function (highlighted)
Band would be that function and a scrollable list with current being displayed.
The current scheme eats a lot of screen space.
The other way is if you hit currently indicated band the table as it exists appears
on screen and after selection disappears with a indicator of band selected.
The general idea is a way to bring up choices pick one then go back to the cleaner screen.
The ICOM IC7300, 7610 use that type of scheme as well as some toyota cars for things
like music system and controls.
Allison
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Please use the forum, offline and private will go to bit bucket.
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a pilot idea with tablet or pc
cdt
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Three possible locks came to mind..
Band edge for the ham bands (no tx if outside),
Keyboard inhibit of other functions while "typing".
VOX or audio TX disable while other audio sources are in use (like web browser on a page with music or talking).
?
Allison
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Please use the forum, offline and private will go to bit bucket.
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Nextion 2.8 display for sale
For sale: ?Nextion 2.8" Enhanced "K" series display. ?I have enlarged the holes to fit the uBitx case, made a wiring harness for it, and powered it up to make sure it is working. ?However, I have decided not to install it as I am very happy with the N8ME/VU3GAO firmware for CW. ?
$30 shipped in CONUS. ?Please contact me privately if interested and for more information.
73 Howard K4LXY
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Re: Datkight Radio: Who's Building?
Another tip is to print the PTO form scaled to 110%. I got the brass nuts at Home Depot, they didn't fit the original size.
73, Mike AF7KR
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Re: Datkight Radio: Who's Building?
I dead bugged (ugly) version on a sheet of G10 copper clad sheet.
FIRST and foremost use 4.9152 or 5.0688mhz crystal to avoid WWV issues at 5mhz.
Second lay it out in a fairly straight line for RF as it keeps inputs and outputs apart.
Especially true for the TX amplifier chain.
Allison
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Please use the forum, offline and private will go to bit bucket.
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Re: Suddenly no receive on my sBitx - what are steps required to resolve this?
Its TX oscillation (yellow red screen) in the TX.
USual case is finals blow and then possible U3 filaure.
Your troubleshooting a hardware issue.
Allison
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Please use the forum, offline and private will go to bit bucket.
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Re: Sbitx #165 received today, thoughts.
Generally, for linux lowering the number of processes can improve response.
The process table is large as seen from terminal running top.? A lot of the
processes are for things like running the GUI and other multitasking and
multi-threaded operations.?
Tentec has good QSK at least on the 4 radios I have (Argo 505, Triton, 6n2, Eagle)
but generally the processing between the user and the RF is small, fast and
RTOS (likely custom) based were there is a MPU.? The first two are totally analog.
Just my $.02 all the hardware for SSB and data are really in the way for CW and?
inefficient.? Good CW alone can take far less hardware and power for the
same output.? Of course everything else is retained because a good RX is still
important.? The whole idea of OOK is simple, until its added to a system that
isn't.
Allison
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Please use the forum, offline and private will go to bit bucket.
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The scrolling would be bidirectional via the use of the upper rotary control (what you normally use to adjust volume or any other multiple selection button that has focus).
At this point, any GUI changes I propose and code I¡¯m going to have as optional, preferably controllable by the user at runtime and not compile-time #DEFINEs. ?I¡¯m considering everything experimental. ?We¡¯re probably going to have to play with several GUI designs until we know what may become the mainstream GUI. ?And of course, Ashhar has the final word :-) ?I¡¯m just a contributor.
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On Oct 2, 2022, at 10:15, PeteWK8S via < pmeier@...> wrote:
¡°?I¡¯ve been considering an option in software to change the multiple band buttons to one button that scrolls through the bands, much like the MODE button does with modes¡±
Please reconsider this consideration. :-) No one I know has been happy with any radio that forces you to scroll through all?the bands to get to your choice. It¡¯s understandable to want (or need) to conserve screen real estate. At least consider making the scrolling bi-directional.? Pete WK8S?
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Re: Datkight Radio: Who's Building?
Mark, Use crystals? that are not 5MHZ. You can purchase crystals that are slightly above 5 and some below 5mhz. WWV will be a pain, depending how strong WWV is into your QTH. ? ? Sent from for Windows ?
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From: Steve BarkesSent: Sunday, October 2, 2022 12:18 AM To: [email protected]Subject: Re: [BITX20] Datkight Radio: Who's Building? ? We have a dozen folks or so in our club¡¯s ¡°Builders¡± group that are building the Daylight Radio.? We¡¯ve completed the PTO, BFO Crystal Oscillator, and the Crystal Filter.? Next up is the 7MHZ Receiver Input Filter.? We¡¯ll build the receiver first, and then move to the transmitter. ? We all are building Manhattan style.? Dave Hassall, WA5DJJ is leading the group. ? Steve Barkes W5RRX ? ? Just curious how many here are building, or planning to build, Farhan's Daylight Radio.
How far along are you and do you have any tips for those of us just starting?
It looks like a fun project and something different from most of the recent projects I've done. I recently read Bill Meara's Soldersmoke book and it got me motivated to tackle a project like this. I haven't built anything like it for a long time. Hopefully it'll be a nice learning (or re-learning) project.
My plan is to do it modularly either dead bug or Manhattan style...probably the VFO first then the receiver section and then the transmitter if everything goes well. Any advice along those lines would be appreciated.
73...???? Mark??? AA7TA
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Sketch too large... remove the bootloader
I've was at 99% flash usage on my custom firmware, which picks-n-chooses from others and mashes in my own mods.
Assuming you're modding & need some space & don't want to give anything up...? you can free 2K bytes if you'll give up the Arduino Bootloader.? As long as you use ICSP (usbTiny, etc.) to do the programming, rather than letting the Arduino IDE upload the sketch, the bootloader isn't needed.? My toolchain has always been to export a HEX file, then use AVRDUDE directly to program Flash & burn EEPROM separately, so I've always used a usbTiny programmer to upload the images.??
You have to modify the appropriate BOARDS.TXT, copying the Nano section & modifying the memory limit & some flags; instructions on the Internet are pretty easy to find, just google "Arduino sketch remove bootloader"
The 30720 limit disappears & you have the entire 32768 flash space to yourself - 2K free feels like heaven.
As an bonus, it boots faster, too.
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¡°?I¡¯ve been considering an option in software to change the multiple band buttons to one button that scrolls through the bands, much like the MODE button does with modes¡±
Please reconsider this consideration. :-) No one I know has been happy with any radio that forces you to scroll through all?the bands to get to your choice. It¡¯s understandable to want (or need) to conserve screen real estate. At least consider making the scrolling bi-directional.?
Pete WK8S?
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John Terrell, N6LN
Gerard
