Date   
Re: Help #arduino

Jack, W8TEE
 

On Monday, August 19, 2019, 9:12:39 AM EDT, Raj vu2zap <rajendrakumargg@...> wrote:


So far I don't think anyone has written code for that display.

You can use lots of  different displays but you will have write your code/sketch.

Raj

At 19-08-19, you wrote:
>I am han radio from cuba. I build the Ubitx and working fine. The questions is
>I can use GLCD 32160 to put un my Ubitx




Re: power supply

Doug W
 

why not just use your shack power supply with a fuse?
--
www.bitxmap.com

Re: Help #arduino

Ashhar Farhan
 

It is a pity that the teensy forums are blocked from indian ip addresses. Paul is quite unresponsive on emails too. I had written a few times to him for help with in getting teensy into one of our space missions. I needed to know if the components used were space worthy. I was really keen.No replies ensued. 
After that, we just went ahead and scratch built an ATMEGA328P based system.


On Mon 19 Aug, 2019, 6:56 PM Jack Purdum via Groups.Io, <jjpurdum=yahoo.com@groups.io> wrote:
On Monday, August 19, 2019, 9:12:39 AM EDT, Raj vu2zap <rajendrakumargg@...> wrote:


So far I don't think anyone has written code for that display.

You can use lots of  different displays but you will have write your code/sketch.

Raj

At 19-08-19, you wrote:
>I am han radio from cuba. I build the Ubitx and working fine. The questions is
>I can use GLCD 32160 to put un my Ubitx




Re: Help #arduino

Jack, W8TEE
 

I've written to Paul privately several times, and I think I got a response once. However, he does seem to be very responsive to questions posed on his Forum. Try posing your question here:




Jack, W8TEE


On Monday, August 19, 2019, 9:39:16 AM EDT, Ashhar Farhan <farhanbox@...> wrote:


It is a pity that the teensy forums are blocked from indian ip addresses. Paul is quite unresponsive on emails too. I had written a few times to him for help with in getting teensy into one of our space missions. I needed to know if the components used were space worthy. I was really keen.No replies ensued. 
After that, we just went ahead and scratch built an ATMEGA328P based system.


On Mon 19 Aug, 2019, 6:56 PM Jack Purdum via Groups.Io, <jjpurdum=yahoo.com@groups.io> wrote:
On Monday, August 19, 2019, 9:12:39 AM EDT, Raj vu2zap <rajendrakumargg@...> wrote:


So far I don't think anyone has written code for that display.

You can use lots of  different displays but you will have write your code/sketch.

Raj

At 19-08-19, you wrote:
>I am han radio from cuba. I build the Ubitx and working fine. The questions is
>I can use GLCD 32160 to put un my Ubitx




Re: power supply

Evan Hand
 

dgclifford,

I would look into a buck boost supply that can supply 3 amps.  This would work with both power supply options.  The potential disadvantage is the possible HF interference from the switching nature of the device(s).  I had read here that some included an LC filter after the supply to overcome this disadvantage.

The buck boost would allow a constant 12 vdc to the rig.  Though the finals are not that fussy (could run the 19.5 vdc direct from the laptop supply) the main board is.  It really should stay around 12 volts unless you start adding heat dissipation to the Raduino regulator.  I found that higher than 12.5 volts the regulator got very hot.  I am supplying 13.5 volts, I added a heat sink to the regulator, AND dropped the voltage to the main board  through 2 1n4001 diodes.  The diodes are not in the circuit to the finals.  

If you run higher voltage to the finals, you will need to beef up the heat dissipation.  Most have just added a fan to run when transmitting to conserve power.  Not needed if you feed the rig with 12 vdc as designed.  You could wire the circuit to run the fans when on the laptop supply and not when running from battery to conserve power.

There are quite a few buck boost supplies on the web.  A lot of bear bones with adjustable voltage are available for under $2 each in small quantities (2-8).  The devices with built in displays run more.

The above are my recommendations, and may be in error.  I would verify and test.

73
Evan
AC9TU

Re: power supply

Ian Reeve
 

The ubitx  or bits does not need more than 2 amps but crucially no more than 12v for the supply voltage.The supply you have can be used as long as it can be reduced to 12 v or slightly less, 13.8 volts is too much.I use a 12 v battery or a 19 or 20 volt computer laptop supply which tend to be well regulated and noise free.A suitable voltage regulator than be bought easily to reduce down to 12v.If you can find a 12v laptop supply you have a neat reliable solution.



From: BITX20@groups.io <BITX20@groups.io> on behalf of Doug W <dougwilner@...>
Sent: Monday, August 19, 2019 2:28:17 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] power supply
 
why not just use your shack power supply with a fuse?
--
www.bitxmap.com

Re: Reduced power on 40 meters. #ubitx #v5

n8yg
 

Relays are working properly..before the filter at tp7 the signal on the scope is reduced, so must be first few components of the 40 meter filter are wrong to drag it down that much.  I will poke around some more there. I was hoping there would be some history on this (thanks). I want to get 40 working so I can check out signal reports with ssb and the ssm2167 chip integrated..works great on 80.
73 Brad

Re: Help #arduino

Evan Hand
 

Thank-you Jack.  As usual always helpful.

73
Evan
AC9TU

Re: Reduced power on 40 meters. #ubitx #v5

 

Hi,

Was the spur problem of the previous versions, reliably fixed on v5?  I seem to remember the solution sometimes causing issues with low output on 40m.

73,


Mark.

Re: Help #arduino

Ashhar Farhan
 

Jack,
My IP address is blocked on the forum. I can't seem to get through.

On Mon 19 Aug, 2019, 9:01 PM Evan Hand, <elhandjr@...> wrote:
Thank-you Jack.  As usual always helpful.

73
Evan
AC9TU

Re: Help #arduino

Jack, W8TEE
 

Farhan:

Tell me what you'd like posted there and I'll do it for you, if you think that would help.

Jack, W8TEE

On Monday, August 19, 2019, 11:44:27 AM EDT, Ashhar Farhan <farhanbox@...> wrote:


Jack,
My IP address is blocked on the forum. I can't seem to get through.

On Mon 19 Aug, 2019, 9:01 PM Evan Hand, <elhandjr@...> wrote:
Thank-you Jack.  As usual always helpful.

73
Evan
AC9TU

Re: Help #arduino

Doug W
 

On Mon, Aug 19, 2019 at 10:44 AM, Ashhar Farhan wrote:
My IP address is blocked on the forum. I can't seem to get through.
Try a web proxy  https://www.hidemyass.com/en-us/proxy
 
--
www.bitxmap.com

Re: Help #arduino

MadRadioModder
 

The only weak spot I see is the ADC chain.  It’s 14 bits but while the spec says there are two… there is actually only one and its muxed.  But it can resolve differential signals because of the way it’s set up.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Jack Purdum via Groups.Io
Sent: Monday, August 19, 2019 8:04 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Help #arduino

 

Hi Evan:

 

As many of you probably already know, PJRS, the makers of the Teensy family, just added the Teensy 4.0 and it is a beast! Some features include:

 

– ARM Cortex-M7 at 600 MHz
1024K RAM (512K is tightly coupled)
2048K Flash (64K reserved for recovery & EEPROM emulation)
– 2 USB ports, both 480 MBit/sec
– 3 CAN Bus (1 with CAN FD)
– 2 I2S Digital Audio
– 1 S/PDIF Digital Audio
– 1 SDIO (4 bit) native SD
– 3 SPI, all with 16 word FIFO
– 3 I2C, all with 4 byte FIFO
– 7 Serial, all with 4 byte FIFO
– 32 general purpose DMA channels
– 31 PWM pins
– 40 digital pins, all interrrupt capable
– 14 analog pins, 2 ADCs on chip

–  RTC

 

plus more. Paul was very careful when he selected his Beta testers for it, and most were frequent contributors to his Forum and the authors of major libraries. They been beating on it for almost a year, so I think the core should be pretty stable. The footprint is actually smaller than the 3.6 and the cost is, too...$19.95. It's overkill for many projects, but the depth of that resource pool opens a whole new world in many arenas!

 

Jack, W8TEE

 

On Sunday, August 18, 2019, 11:20:55 PM EDT, Evan Hand <elhandjr@...> wrote:

 

 

The short answer is yes, if you add the screen features you want to the Arduino firmware.  I am not aware of any such firmware available.  There is also a shortage of I/O in the stock Raduino. 

I would suggest that you first look at the Nextion display work that can be found here: http://www.hamskey.com/. 

Dr. Lee has written software and screen designs to work with the Nano that came with the uBitx.  With all the added features, there is very little room for more modifications in the Nano code.  You do need to purchase a Nextion display with touch screen capability. https://nextion.tech/  Be sure to verify the screen size and the enhanced version with touch capabilities to work with the KD8CEC software.  I used both the 2.4 and 3.2 inch enhanced versions.  Available from multiple vendors.

There is the also JackAl add on board that did change the processor to one with more memory and speed.  That is available here: https://qrpguys.com/jackal-for-%CE%BCbitx  This has higher capabilities, at a higher price.  Be sure to note that the listed price for the board does not include every thing that you need to make it work.

You can go the route of converting the Nano code to a larger/more powerful processor like the Teensy on the JackAL board or other newer Arduino based system.  Regardless, that will be a significant effort.  Would be curious to see any results that you come up with.

73
Evan
AC9TU


Virus-free. www.avg.com

--

…_. _._

Question #ubitx

Jon Schumacher
 

Greetings,

I read the article in this months QST.  I am intrigued and am contemplating making an order.

BUT!!!

I have a friend who likes to build kits.  He bought a version 3 kit and a box to go with it a year or 2 ago and never touched it. He offered it to me for a great price.  I am leaning towards just getting the latest and greatest.

Any thoughts??

Jon - N8UL

Re: Question #ubitx

Doug Hall
 

Yes, order the v5 board and get the latest and greatest. There were a number of worthwhile improvements between v3 and v5.

I'm having a lot of fun with my v5 uBITX.

73,
Doug K4DSP


On Mon, Aug 19, 2019 at 11:14 AM, Jon Schumacher wrote:
Greetings,

I read the article in this months QST.  I am intrigued and am
contemplating making an order.

BUT!!!

I have a friend who likes to build kits.  He bought a version 3 kit and
a box to go with it a year or 2 ago and never touched it. He offered it
to me for a great price.  I am leaning towards just getting the latest
and greatest.

Any thoughts??

Jon - N8UL

Re: Question #ubitx

Evan Hand
 

I think that you need to answer that question for yourself.  If you go back and read some of the threads in this group for Spurs and Harmonics, you will see that there are a number of modifications that you would need to make to bring the version 3 (v3) into FCC compliance.  So if you like to modify things, the v3 will give you a lot of opportunities beyond adding things.  You may also be equipment challenged to verify if you have tamed the spurs, any second receiver with some measurement system should be able to help with the harmonics, or just use SSB and not CW.

There are also comments about key clicks and audio issues with the v3 on this group.

If you want to learn allot and jump into kit modding, get the v3.  If you want to build a fairly compliant semi kit and add improvements of functionality (touch screen, AGC, S meter, ect..), buy the new v5.  Your choice.

FWIW
73
Evan
AC9TU

Re: Question #ubitx

Jon Schumacher
 

Thanks.  This is exactly what I was looking for.  If I dive in, i'll go V5.

Re: ubitx s-meter swr-meter help #bitx20 #bitx40 #bitx40help #arduino #calibration

circular.simetry@...
 

thank you very much now i understand. 73 all the best

homebrew ubitx roofing filter #bitx20 #bitx20help #bitx40 #bitx40help #filters

circular.simetry@...
 

hello i have finished building the ubitx CM2KMK version and i have problems with the 45mhz crystal filter. the only filters i have in my inventory are the following--
22M03       45,1mhz     from a motorola GM300
49S10B     49,95 mhz   from a kenwood TK760
FL-210       21,8 mhz       from Icom M59
I have tested all of them by changing the frequency acording to each crystal in the source code.The best results so far i get with the 21.8mhz filter FL-210.
iI think the problem is matching the impedance with the two coils L5 and L7 i used 12 turns on T37-6 .
Please if someone have any documentation about the filters or knows what impedance they have i wil be very thankfull.
Thanks in advance ! 73de yo4huj

Re: Help #arduino

Tom, wb6b
 

On Mon, Aug 19, 2019 at 06:26 AM, Jack Purdum wrote:
but this article looks like it could help:
What an interesting site. The site that host the article you linked:
https://www.electronicwings.com
Has a lot of interesting projects and articles. It is amazing how well the experimenter/maker/hobbyist world is doing, with so many sites devoted to technology for experimenters. The projects now days were just science fiction dreams 30+ years ago.

Tom, wb6b