Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
- BITX20
- Messages
Search
|
Re: Firmware questions
Jack, W8TEE
I don't think you'll find one that's an exact match. I think Jim Sheldon, W0EB, made some kind of PCB that allowed a Teensy to plug into a Nano socket, but I'm not sure. Jack, W8TEE
On Friday, April 23, 2021, 2:02:10 PM EDT, jerry@... <jerry@...> wrote:
Thanks Jack, ? ? I suppose I should have been more specific - a more powerful board that would fit in the same form factor and at least more or less plug in.? Although amazing things can be done with little green jumper wires :). ? ? I actually have a couple of ESP32 WROOM cards right here on the desk. ? Thanks for the table. ? ? ? ? ? ? ? ? ? ? - Jerry KF6VB On 2021-04-23 09:13, Jack, W8TEE via groups.io wrote:
> Jerry: > > Almost any other microcontroller will have more of everything: flash, > SRAM, and clock. This is true for the STM32, ESP32, and Teensy. All > are programmable in the Arduino IDE after installing the proper > software patch for the IDE. The table below is from _Beginning C for > Microcontrollers_ and gives you some idea of the resource > > RESOURCES > > ARDUINO NANO > > ARDUINO > > MEGA 2560 PRO MINI > > TEENSY 4.06 > > BLUE PILL > > (STM32F103) > > ESP32 NODEMCU WROOM 327 > > Processor bits > > 8 > > 8 > > 32 > > 32 > > 32 > > Flash1 (bytes) > > 32K > > 256K > > 2048K > > 64K - 128K > > 1.3M5 > > SRAM (bytes) > > 2K > > 8K > > 1024K > > 20K > > 380K5 > > EEPROM (bytes) > > 1K > > 4K > > 64K2 > > ?3 > > ?3 > > Processor Clock Speed > > 16MHz > > 16MHz > > 600MHz > > 72MHz > > 240MHz4 > > I/O pins > > 14 > > 54 > > 40 > > 26 > > 25 > > Interrupts > > All 14 mappable, 2 external > > 6 > > All digital pins > > All 26 mappable > > All 25 mappable > > Timers > > 3 (2 8-bit, 1 16-bit) > > 6 > > 16 > > 14 > > 4 > > SPI > > 1 > > 1 > > 3 > > 1 > > 2 > > I2C > > 1 > > 1 > > 3 > > 1 > > 2 > > DAC resolution (bits) > > 10 > > 10 > > 12 > > 12 > > 12 > > Analog pins > > 8 > > 16 > > 14 > > 5 > > 15 > > Price > > $3 > > $8 > > $20 > > $5 > > $10 > > base available for each. > > Jack, W8TEE > >? On Friday, April 23, 2021, 11:54:24 AM EDT, jerry@... > <jerry@...> wrote: > > Hello! > >? I downloaded the ubitx source code off github, and successfully > compiled and uploaded it to the radio.? As a > "Hello World" experiment, I changed "LSB" to "PSB" on the display. > Then > changed it back. :) > >? The Nano seems to be pretty maxed out.? 93% of program ROM used. > Are > there any more powerful boards available out there?? More rom, faster > clock? > >? Screen update is pretty slow.? The rig would be more pleasant if it > was faster, especially the frequency display. > Anybody know what's the bottleneck? > >? Are there any unused I/O pins on the Nano?? Such could be used to do > a > bit of profiling - you output pulses at > strategic spots in the code, and watch them with a scope. > >? ? ? ? ? ? ? ? - Jerry KF6VB > > -- > Jack, W8TEE > > > Links: > ------ > [1] /g/BITX20/message/87862 > [2] /mt/82314369/243852 > [3] /g/BITX20/post > [4] /g/BITX20/editsub/243852 > [5] /g/BITX20/leave/10189903/243852/952924773/xyzzy -- Jack, W8TEE |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: Firmware questions
Has anybody tried dropping in a Teensy?
toggle quoted message
Show quoted text
- Jerry KF6VB On 2021-04-23 11:02, jerry@... wrote:
Thanks Jack, |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: Firmware questions
Thanks Jack,
toggle quoted message
Show quoted text
I suppose I should have been more specific - a more powerful board that would fit in the same form factor and at least more or less plug in. Although amazing things can be done with little green jumper wires :). I actually have a couple of ESP32 WROOM cards right here on the desk. Thanks for the table. - Jerry KF6VB On 2021-04-23 09:13, Jack, W8TEE via groups.io wrote:
Jerry: |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
Do you guys really have to get so bitchy about such a trivial matter ???
toggle quoted message
Show quoted text
You seem to forget this is NOT just an American oriented group there are many others from outside the States who have no clue whatever who MPJA are they just hit the delete button and say nothing........surely those who don`t like the mails can do the same. Dave G4JBE?? ... UK On 23/04/2021 18:33, Bill Cromwell wrote:
Too late Max, |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
My feeling is if the specials can be used with the BITX20 one should be able to post them.
toggle quoted message
Show quoted text
I subscribe to Electronic Goldmine as well as MPJA . They have daily specials which one may miss if you casually browse so notifying others can be useful. Mike N2MS Since you like them so much why don't you sign up for them yourself? |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
Too late Max,
toggle quoted message
Show quoted text
Having ordered from them I am already signed up. Wanna hear about other places I am signed up or don't you experiment? Just use the ignore thing. If you learn how to make filters you can automatically delete *all* messages from me, Bob, and some of the others and never have to see any of us again. Have a nice day and... 73, Bill? KU8H bark less - wag more On 4/23/21 1:04 PM, Max via groups.io wrote:
Since you like them so much why don't you sign up for them yourself? |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: Cw Finals seem very warm and power output lower
Have you checked the SWR on the CW portion of the band? If it's higher than in the SSB portion then that might explain it. I was measuring the current on my uBITX and noticed it drew aprox ~200ma more when I had it connected to an antenna with an SWR of 1.3:1 versus a dummy load that showed an SWR of 1.1:1 . Max KG4PID
On Friday, April 23, 2021, 09:26:32 AM CDT, Chuck Eglhaut <ceglhaut@...> wrote:
Been working some CW and V6 seems to be running a lot warmer than it did on SSB and I ran FT8 but didn't notice the cas getting as warm as it was now. could the finals be going. What check looked at is there test points to look at? Chuck |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
Since you like them so much why don't you sign up for them yourself? Max KG4PID
On Friday, April 23, 2021, 11:43:12 AM CDT, John Cunliffe W7ZQ <n2nep@...> wrote:
I enjoy those links, keep them coming. If some people don't know how to set up filters in their e-mail that should not keep you from posting them.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
Hi,
toggle quoted message
Show quoted text
We don't even have to bother about configuring a filter. Right click on the message and then choose to *IGNORE* the entire thread - that includes all of the messages past, present, and future in the same 'conversation/thread/subject'. Never see it again unless you search for it. I do it to WSPR and FT(x) threads all the time. If I decide I want to see them I can "unhide" them. I do (ab)use the modes sometimes. It is so easy that even *I* can do it:) 73, Bill KU8H bark less - wag more On 4/23/21 12:43 PM, John Cunliffe W7ZQ wrote:
I enjoy those links, keep them coming. If some people don't know how to set up filters in their e-mail that should not keep you from posting them. |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: MPJA Specials
If they say MPJA in the subject line with no RE: in front, they need to hit DELETE or buy a new keyboard, if not willing to admit they are not computer-savvy. It's like some who see all upper case and call it shouting when the writer may just have a vision problem. Some are merely short-sighted... 1-1/2 negative and the rest positive comments ... and I was prepared to leave the group? Bob ¡ª KK5R
On Friday, April 23, 2021, 12:43:31 PM EDT, John Cunliffe W7ZQ <n2nep@...> wrote:
I enjoy those links, keep them coming. If some people don't know how to set up filters in their e-mail that should not keep you from posting them.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: Firmware questions
Jack, W8TEE
Jerry: Almost any other microcontroller will have more of everything: flash, SRAM, and clock. This is true for the STM32, ESP32, and Teensy. All are programmable in the Arduino IDE after installing the proper software patch for the IDE. The table below is from Beginning C for Microcontrollers and gives you some idea of the resource
base available for each. Jack, W8TEE
On Friday, April 23, 2021, 11:54:24 AM EDT, jerry@... <jerry@...> wrote:
Hello! ? I downloaded the ubitx source code off github, and successfully compiled and uploaded it to the radio.? As a "Hello World" experiment, I changed "LSB" to "PSB" on the display.? Then changed it back. :) ? The Nano seems to be pretty maxed out.? 93% of program ROM used.? Are there any more powerful boards available out there?? More rom, faster clock? ? Screen update is pretty slow.? The rig would be more pleasant if it was faster, especially the frequency display. Anybody know what's the bottleneck? ? Are there any unused I/O pins on the Nano?? Such could be used to do a bit of profiling - you output pulses at strategic spots in the code, and watch them with a scope. ? ? ? ? ? ? ? ? - Jerry KF6VB -- Jack, W8TEE |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Firmware questions
Hello!
I downloaded the ubitx source code off github, and successfully compiled and uploaded it to the radio. As a "Hello World" experiment, I changed "LSB" to "PSB" on the display. Then changed it back. :) The Nano seems to be pretty maxed out. 93% of program ROM used. Are there any more powerful boards available out there? More rom, faster clock? Screen update is pretty slow. The rig would be more pleasant if it was faster, especially the frequency display. Anybody know what's the bottleneck? Are there any unused I/O pins on the Nano? Such could be used to do a bit of profiling - you output pulses at strategic spots in the code, and watch them with a scope. - Jerry KF6VB |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: UbitX V.5 Test point
I always start by testing the CW output to verify that the power amp is working.? If no power on CW then most likely it is a Q90 failure.? To test Q90 measure the voltages on each of the three stubs.? The values are listed in a spreadsheet that is stored in the files section of this board.? Search for vu2zap (Raj is the person who took and posted the voltages).? Note the test conditions that are listed in the spreadsheet, and be sure to have a dummy load (or tuned antenna) to the radio when transmitting.? Q90 voltages should be tested in SSB mode with no audio into the mic.
/g/BITX20/files/VU2ZAP 73 Evan AC9TU |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
uBITX V6 LIMITING POWER OUTPUT
Dear All, ??? Good Day.I am using uBITX V6 for 11 months and I am getting good reports. Now I want to add a linear amplifier so that I can work? more distant stations. For using the linear, I have to limit the output power from the BITX within 5 Watts. ???? 1.From few posts and you tube video, it is understood that the output can be controlled by adjusting the drive to PA finals. In this regard, I think that, the input voltage to UBITX (in stead of 12V) can be reduced which will also result in minimising the output power.If this option can be adopted, what is the safe minimum voltage that can be applied to the input of BITX radio? ? 2. Further, in CW mode, I am getting spikes in power output at the commencement of each transmission.As per suggestions in various posts in the group, I fitted few CLIP ON FERRITE R.F.CHOKES at few points, cables etc. But the problem persists. So even after adjusting the drive to PA, the spike/surge? in power output from UBITX can harm the Linear. Is there any other option to eliminate the spike in CW? ??? I request the group members/experts to give valuable guidance. ???? With best regards and thanks in advance, ??? MUTHU ??? VU2LMN +919443114779 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Re: ubitx v6 cat-only operation firmware
Yes, the firmware replaces the one shipped (and indeed, my fork is
toggle quoted message
Show quoted text
derived from original firmware Farhan's code). Basically a rip-off, leaving just the revised CAT and si5351 functions. Rafael On 4/23/21 3:33 AM, Pierre FK8IH wrote:
My question is : does the firmware you are elaborating can totally |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Bob Lunsford
Brian Bowling
to navigate to use esc to dismiss