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UBITX COLOUR TOUCH DISPLAY CONTROLLER V.2.72U Released
#ubitx
Joe
Good Afternoon All, VU2SPF - Dr. SP Bhatnagar(INDIA) and VE1BWV Joe Basque (CD) are pleased to announce The initial public release of the UBITX Colour Touch Display Controller v2.72u
This is essentially the same as the one for BITX, but modified to work with the UBITX
The new software provides a Colour Touch Display Controller with a no menu approach to control your ubitx .
More info: http://vu2spf.blogspot.ca - for latest code Videos on You tube - search for vu2spf or vu2spf ubitx Facebook Bitx 20 Features: 1. Low cost for parts - Suggested parts - 1 atmega2560 - approx $8.00US, 1 Addafruit dds Si5351 - $10.00 - 2.8 TFT touch colour display $12.00 US
2. All bands, band selectivity, USB LSB -Works well with digital modes
3. All Display buttons are touch control - and no menus
4. Any button can have a physical button and a TFT touch or any combination.
5. 100 memory channels
6. Tunable BFO's
7. 3 VFO'S - A B and MEM
8. USB / LSB
9. TX timeout control
10. Touch TX button and or physical TX control - for ptt mike or digital modes (vox input low)
Next : New Feature - Working on adding Cat Control.
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UBITX COLOUR TOUCH DISPLAY CONTROLLER V.2.72U PHOTOS
#ubitx
Joe
From atmega 2560 - 3 cables for clocks and 6 pin harness to ubitx 2 cables for SI5351 Lower left are 2 voltage down converters - 1 adjusted to 9v for the atmega
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Re: uBITX AM BCI Filter
#ubitx
Mike Woods
Thanks Nick
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I will put up the further details on the news item on uBITx.net I am sure that your mod will be widely adopted for those of us who are aflicted by nearby AM broadcast stations. Mike
On 3/02/18 11:40 PM, Nick VK4PLN wrote:
--
Mike Woods mhwoods@...
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Re: BitX40 v1.27.7 SPOT mode
Thanks, Allard. I'm thinking perhaps to eliminate the +50 in my version since I am displaying an extra digit in normal mode. Do you know where (what line) that rounding takes place?
73, =Vic= WA4THR
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
John Backo
USB requirements are rather stringent. Unless
the 12 MHz crystal has changed radically in frequency, it should be pretty much left alone. (If it has changed or if it interferes, the best solution is to replace the whole thing). Easy enough to determine: try using the USB interface. If it communicates, all is ok. Usually in the arduino, as in most uC's, most RFI problems are traced to the external (16 MHz) crystal, or leakage into the power supply. If one is not ready to replace the unit, the best solution is a new crystal; it can be any of a number of frequencies. What changes is the timing span. Alternately, one can try to shield everything -- especially the leads going to other parts of the rig. Sometimes, the lcd is noisy and not much can be done about it except to change the programming to change the update method. But usually, that is a KHz and not a MHz problem. In this case I would not discount it, however, since the problem is audio sidebands. john AD5YE
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Re: BitX40 v1.27.7 SPOT mode
Ah, that explains!
toggle quoted messageShow quoted text
In your case you'd need to round to the nearest 10 Hz. at line 481: ultoa((frequency + 50), b, DEC); // construct the frequency string change to: ultoa((frequency + 5), b, DEC); // construct the frequency string 73 Allard PE1NWL
On Sat, February 3, 2018 20:34, Vic WA4THR via Groups.Io wrote:
Thanks, Allard. I'm thinking perhaps to eliminate the +50 in my version
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Re: #ubitx Current draw when transmitting?
#ubitx
It's in the right range. The draw and output depend heavily on frequency. You can see the draw I measured key down into a dummy load at different frequencies in this post https://groups.io/g/BITX20/message/40043
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Re: #ubitx Current draw when transmitting?
#ubitx
Okay, so I am not going bonkers over the changes in amperage. Something else that I noticed, psk31 on 40m pulls 1.5 amps, but feld-hell pulls only 0.8 amps...any idea why?
-- ---------- N5WLF, Greggory (or my nickname, Ghericoan) General Class, Digital Radio Hobbyist
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Re: First Arduino sketch loaded
James Lynes
Met Bjarne in a Birds of a Feather session at an OOPSLA(Object Oriented Programming Systems and Languages) conference in the Pacific Northwest. just to further name drop, I also met Ester Dyson at the same conference. Her Release 1.0 newsletter was always a great source to where the software industry was going. Objective C always made more sense to me than C++.
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Re: #ubitx Current draw when transmitting?
#ubitx
Thomas Sharka
SSB only draws current when you speak into the microphone or in the case of digital, transmit a frequency.
On Saturday, February 3, 2018 5:53 PM, Ghericoan <boakawizkid@...> wrote: Okay, so I am not going bonkers over the changes in amperage. Something else that I noticed, psk31 on 40m pulls 1.5 amps, but feld-hell pulls only 0.8 amps...any idea why? -- ---------- N5WLF, Greggory (or my nickname, Ghericoan) General Class, Digital Radio Hobbyist
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Re: uBITX woes, feeling disheartened.
#ubitx
@AC8XZ
hello all First poster; k3 suppose to have voltage all the time? on rec first set of pins have none. second set/3 have 11.8 v last one no voltage. on trans.1st third and fourth set of pins have11.8v. I can hear ke clicking when I hit ppt. AC8XZ
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Re: uBITX woes, feeling disheartened.
#ubitx
Jerry Gaffke
I have no idea what your sets of pins are.
toggle quoted messageShow quoted text
Read this post to understand the relay pin numbering, and how the rail labeled "TX" gets connected to 12v when you press the PTT switch to transmit. https://groups.io/g/BITX20/message/40808 When receiving, the relay contacts are as show in the schematic. Pin 8 of K3 is not getting power during receive, so it is zero volts and the relay is not energized. M1 and M3 are low level received audio, and should be close to zero volts. The antenna at K3-12 is connected to K3-14 from which the received signal continues on through K1 and into the receiver. The antenna also has a low level signal, and you will see close to zero volts on those pins too. When transmitting, the TX 12v rail powers the K3 relay coil by putting 12 volts on pin 8. M1 and M2 get disconnected when the relay is energized, in hopes of somewhat reducing the PTT audio pops. The antenna is connected to the IRF510 power amp through K3-12 and K3-16, there will be perhaps 30 volts RMS of RF signal on pins 12 and 16 while transmitting, though the signal is centered on ground due to the transformer at T11, your DC voltmeter won't accurately show what is going on there when transmitting. The meter will likely read around zero volts, though the strong RF transmit signal could conceivably damage some meters.
On Sat, Feb 3, 2018 at 05:53 pm, @AC8XZ wrote:
hello all First poster; k3 suppose to have voltage all the time? on rec first set of pins have none. second set/3 have 11.8 v last one no voltage. on trans.1st third and fourth set of pins have11.8v. I can hear ke clicking when I hit ppt. AC8XZ
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
John <passionfruit88@...>
Further tests and head scratching.
Since I replaced the Arduino and mounted it on female headers I decided to do more tests to try to answer some of the leads and questions in the thread.
I used some 20cm (8 inch) female-male connectors and connected the Arduino remotely from the Radiuno so that I had access to the 12Mhz crystal next to the CH340G chip underneath the Arduino board.
The radio has been re-calibrated and shows a difference of less than 10Hz on a 10M beacon and on an 80m CW training transmission from our WIA here in Sydney, so I suspect it is pretty accurate in frequency.
I then re-did a BFO adjustment both on the factory side (low side) of the 12Mhz filter and on the other side. By observing the audio spectrum I adjusted the BFO so that the passband was as close as I could tell 500Hz to 2400Hz.
I then in each case moved the first and 2nd VFO to shift the alignment of the two crystal filters and noted the change in signal strength between the factory default and the peak.
Results:
1. Factory side of BFO adjustment results in a BFO frequency of 11,996.6Khz while the opposite side of the pass band results in a BFO of 11,999.5Khz. So as expected there is a difference of around 3KHz between a low side and high side BFO. And the centre of the filter appears to be at around 11,998Khz which I suspect is pretty normal. Please comment if you think it is not.
2. The tuning clicks and tones within the pass band have definitely disappeared as mentioned in a previous post.
3. The tones outside of the passband are still there for some values of the BFO and shift by 550Hz for each change of 100Hz of the BFO. Note that the receiver is usable as the tone free BFO values result in a passband that is more or less 500-2400Hz.
4. Going with the BFO on the high side of the filter produces similar results. I just noted that the passband seems less steep on the low audio frequencies when in this configuration. Of course in that case LSB becomes USB and vice-versa.
5. Now the part I can't understand: while listening to a fixed signal (the CW training transmission on 80M) AND positioning the BFO frequency so that strong tones would be heard and seen on the spectrum at 13,379Hz, I touched the three crystals in turn: the 16Mhz Arduino one, the 12Mhz CH340G one, and the 25Mhz VFO one.
The first two did not produce any difference in Rx signal or tones. Touching the 25Mhz one produced a shift in the received signal audio frequency BUT NOT in the tones frequency.
This does not make sense to me as if the si5351a clock was to shift, any beat of harmonics should produce a shift in frequency.
And yet if I adjust either the BFO frequency OR the 1st and 2nd oscillators frequencies I get a shift in tones frequency.
So if the tones were geneated after the filter or in the audio circuit I can't see how they would shift in frequency when I change some oscillators frequencies. And if they were generated before the 12Mhz filter they should shift and the 25Mhz crystal shifts!
Any idea why that is?
6. I used the code below to shift the alignment of the first xtal filter and the 12Mhz xtal filter. I noted improvements in signal level (I assume the Rx amplification chain is more or less linear) of 3 to 6dB. So less that the 8dB I reported before but still not negligible.
The peak seems with a first and second VFO about 2 to 3Khz above their default values.
The shift is reset to zero each time the Arduino is reset and is not saved in EEPROM at present.
It would be interesting to see if some other units show the same changes in signal strength.
I noted that some shifts would produce tones and these tones would shift in frequency too, and by 4,000Hz for each change of 1,000Hz of first and second VFO frequencies. (as opposed to 550Hz for each 100Hz of the BFO). I made the following changes in the ubitx_20 file:
A. I inserted the following after the line "unsigned long frequency, ritRxFrequency, ritTxFrequency; //frequency is the current frequency on the dial"
//VK2ETA test spur, change first IF and Second IF to shift the first IF but keep the rig Rx frequency the same
unsigned long firstIfShift = 0;
B. The setFrequency method became:
void setFrequency(unsigned long f){
uint64_t osc_f;
setTXFilters(f);
if (isUSB){
//VK2ETA first IF shift
// si5351bx_setfreq(2, SECOND_OSC_USB - usbCarrier + f);
// si5351bx_setfreq(1, SECOND_OSC_USB);
si5351bx_setfreq(2, SECOND_OSC_USB + firstIfShift - usbCarrier + f);
si5351bx_setfreq(1, SECOND_OSC_USB + firstIfShift);
}
else{
// si5351bx_setfreq(2, SECOND_OSC_LSB + usbCarrier + f);
// si5351bx_setfreq(1, SECOND_OSC_LSB);
si5351bx_setfreq(2, SECOND_OSC_LSB + firstIfShift + usbCarrier + f);
si5351bx_setfreq(1, SECOND_OSC_LSB + firstIfShift );
}
frequency = f;
}
C. The doRIT method became:
void doRIT(){
unsigned long newFreq;
int knob = enc_read();
unsigned long old_freq = frequency;
//VK2ETA first IfShift
unsigned long old_shift = firstIfShift;
if (knob < 0)
// frequency -= 10l;
firstIfShift -= 1001;
else if (knob > 0)
// frequency += 100;
firstIfShift += 1000;
// if (old_freq != frequency){
if (old_shift != firstIfShift){
setFrequency(frequency);
updateDisplay();
}
}
To use it: select a preferably fixed tone signal like a broadcast station. Press the encoder and select RIT ON. Turn the dial and note the change in signal strength. Sorry I don't have a display of the 2nd VFO frequency at present. Each step is a shift of 1000Hz in VFO frequency.
All the best,
73, John (VK2ETA)
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
I know I'm late to this party but you cannot swap crystals on nano board without first using a atmel programmer to burn the fuse bits that tell what freq it will be using or you will brick your nano.... also if the ftdi or whatever usb chip is using 12mhz, you could get the sparkfunPro 16mhz/8mhz board that does not use usb but instead uses usb to serial cable to upload. Be warned 16mhz board is 5 volt and 8 mhz is 3.3 volt. I only use the Sparkfun Pro 16 for my projects. Another note if you go with the ATMega32U4 boards they have built in usb.... Maybe this will help someone or maybe not.... James Lawrie Sent from my Galaxy Tab A
-------- Original message -------- From: Arv Evans <arvid.evans@...> Date: 2/3/18 09:38 (GMT-06:00) To: BITX20@groups.io Subject: Re: [BITX20] #ubitx-help Strong Audio Tones in and outside audio receive passband Jerry Interesting observation that the 12 MHz USB clock oscillator is on nearly the same frequency as the uBITX IF and BFO. If the BFO is offset to the high side of the IF passband it could well be within audio range of the USB clock frequency. If this is the problem then it might be possible to pull the USB clock crystal down with a small parallel capacitor. That should not make a significant change in USB clock timing but could take it out of range of the receiver IF and BFO frequencies. Some experimenting is probably necessary to tell how far to pull the crystal. It would not be good to accidentally put it within the IF filter passband. Arv K7HKL _._ On Sat, Feb 3, 2018 at 1:47 AM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: I assume you mean changing the Arduino crystal, not cap.
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Re: Toroids winding information
#ubitx
What Cesar has not told us other than he has some great antique guns is
that he has
toggle quoted messageShow quoted text
6600 function generator. He also has a pico scope. I've been trouble shooting via whatsapp which is faster than group emails! The last test done was to feed 500mv to T10 at 7.15MHz and check output - NIL. Any ideas Jerry! Raj
At 03/02/2018, you wrote: Cesar,
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
matjaz
hello Ian
I have problem too use software 0.27 for uBitx.
To load in arduino nano use Xloader and your hex file.
But when conect power , first have on display mesage about version and then
CW 7.15000.
Encoder dont work and all button nothing.
What i was made wrong.
The conection on indidds. pdf file
best regards and 73
Matjaz
my call S56ZVD
From: Ian Lee
Sent: Friday, February 02, 2018 12:45 AM
To: BITX20@groups.io
Subject: Re: [BITX20] uBITX Firmware (CEC) 0.30 released (Test
version). #ubitx Thanks for your information.
i fixed you found bug now, and 1 more fixed. thanks again.
If you have any oddities, please email me anytime.
Ian KD8CEC 2018-02-02 8:27 GMT+09:00 K2ZSD - L. Ince <K2ZSD@...>:
-- Best 73 KD8CEC / Ph.D ian lee kd8cec@... www.hamskey.com (my blog)
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Re: BITX QSO Afternoon/Night, Sunday, February 4, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
Just a reminder!
I'm probably not going to make it on for either session today. The flu shot apparently didn't work! Have fun! -- John - WA2FZW
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
Ian Lee
Matjaz
Thanks for interresting. I saw the schematic you attached. It seems to have only an encoder and a function key. I do not test it, but I guess. so My guess might be wrong. My guess is that the CW key is malfunctioning. The CW key
(A6?) must with pullup resistor. If you connect any resistor around A6 and VCC, it will work normally. (This is similar to the original source.) And I released 0.34. The latest version adds more fun features. Ian KD8CEC 2018-02-04 20:05 GMT+09:00 matjaz via Groups.Io <matjaz_zejn@...>:
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
Ian Lee
Philip I am going to put uBITX into the case finally this week.Until now it was open for testing. I will cut off the power line of USB like you. And to fix the Arduino Nano reset problem, i will also attach one capacitor. Thanks for information. Ian KD8CEC 2018-02-03 7:30 GMT+09:00 Philip <philip.g7jur@...>:
I am going to try disconnecting the 5 Volts on the USB, as it is power up the display via the USB lead.
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Re: uBITX Firmware (CEC) 0.30 released (Test version).
#ubitx
Ian Lee
Bill Thanks for using this firmware. At first I wanted to make uBITX a real radio, so I started to put only the most basic functions. As I worked on it, I got a lot more fun with the opinions of the users. uBITX Manager is more fun if you use it together. Thank you. Ian KD8CEC 2018-02-02 12:26 GMT+09:00 bill richardson <ng1p.bill@...>:
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