I have mostly done by plugging them the wrong way. - f
I've never killed one. What are you doing to kill them? I've had most models starting with the model 2B and even those are still running.
Max
On Tuesday, August 9, 2022, 12:34:23 PM CDT, Ashhar Farhan < farhanbox@...> wrote:
I have killed too many Pis to count. Back in the Raspberry Pi warehouse, the little zero Pis are warned about me. People hide their compute modules when I am in town. But I have never blown one due to heat. - f??
Heat sinks do very little for the pi. A small fan however works wonders.
Max KG4PID
On Tuesday, August 9, 2022, 10:12:00 AM CDT, James Conaway < jwc7992@...> wrote:
Neil,
Did you have heat sinks installed on the pi chips. I forgot to
install mine and will be installing them today.
James NU5E
On 8/9/2022 3:13 AM, Ashhar Farhan
wrote:
Neil,
At 5v, it starts complaining of low voltage. The
raspberry pis i have used have done well at 5.5v. I have also
noted that the official power supply provides 5.4 volts.
- f
On Tue, Aug 9, 2022, 1:12 PM
Niels Jalling < niels@...>
wrote:
Farhan
Why 5.4V ???? Official Raspberry Pi 4 says 5.1V supply
voltage.
My sBitx RPI4 died yesterday!! No boot and constant green
light
I measured the voltage from LM338, it was 5.42V,
de oz9ny, niels
|
I've never killed one. What are you doing to kill them? I've had most models starting with the model 2B and even those are still running.
Max
On Tuesday, August 9, 2022, 12:34:23 PM CDT, Ashhar Farhan <farhanbox@...> wrote:
I have killed too many Pis to count. Back in the Raspberry Pi warehouse, the little zero Pis are warned about me. People hide their compute modules when I am in town. But I have never blown one due to heat. - f??
Heat sinks do very little for the pi. A small fan however works wonders.
Max KG4PID
On Tuesday, August 9, 2022, 10:12:00 AM CDT, James Conaway < jwc7992@...> wrote:
Neil,
Did you have heat sinks installed on the pi chips. I forgot to
install mine and will be installing them today.
James NU5E
On 8/9/2022 3:13 AM, Ashhar Farhan
wrote:
Neil,
At 5v, it starts complaining of low voltage. The
raspberry pis i have used have done well at 5.5v. I have also
noted that the official power supply provides 5.4 volts.
- f
On Tue, Aug 9, 2022, 1:12 PM
Niels Jalling < niels@...>
wrote:
Farhan
Why 5.4V ???? Official Raspberry Pi 4 says 5.1V supply
voltage.
My sBitx RPI4 died yesterday!! No boot and constant green
light
I measured the voltage from LM338, it was 5.42V,
de oz9ny, niels
|
Ashhar,
Thank you for sending the steps for me to follow. You have a lot of folks with questions to answer. There are probably just a few who use PSK31, so just put my questions lower in your priority list.
I followed your steps and got a decode of a mode identification message that had been sent at the beginning of a message,
It was?Before RSID <<2022-08-09T15:38Z BPSK31 @ 14070000 + 1530>>?That was the only message that decoded intelligibly. I also tried monitoring 40 meters but did not get any go decodes there either. And I did narrow the bandwith so that it was centered on the signal.
As you suggested, I touched the CLOSE button and switched to the Fldigi window. Before switching to Fldigi, I had centered the red line on the center of the signal that I wanted to decode. When I switched to Fldigi, I noticed that the two red cursor lines were to the right (higher in frequency) than the center of the signal on the Fldigi waterfall. The offset frequency displayed below the waterfall in Fldigi was the same as the frequency displayed in the pitch box in sBITX. While in Fldigi, I could not change the offset frequency. I switched back to sBITX and by trial and error, I adjusted the pitch control. Switching back and forth between sBITX and Fldigi, I continued to lower the pitch frequency until the cursor lines in Fldigi enclosed the strongest part of the signal. Unfortunately, I still did not get an intelligible decode. I understand that there may not be a direct correlation between the red pitch line on the sBITX waterfall and the red cursor lines on the Fldigi waterfall, but I thought I'd experiment to see if I could get a good decode. I also tried raising the IF level but that didn't help either.
I will continue experimenting and let you know if I observe any other behaviors that might be helpful.
Thanks for your continuing support!?
--
Stephen, KO4CVU
|
Re: An Alternative for the Traditional Rotary Encoder
Great find! Gizzmos like that can sure make like easier.
Max
On Tuesday, August 9, 2022, 11:30:54 AM CDT, Dennis Zabawa <denniszabawa@...> wrote:
I found a neat replacement for the traditional rotary encoder: The Adafruit ANO Directional Navigation and Scroll Wheel Rotary Encoder, Product ID: 5001, combines a rotary input device, similar to the original clicking scroll wheel interface on the first iPods, with five user pushbuttons. I am building up a controller for a BITX40 board that utilizes this device.? The display is a 20x4 LCD display. I am controlling frequency input using the Left/Right buttons to shift an input cursor and the UP/DOWN buttons or the scroll wheel to change the value of a frequency digit. A press of the center button brings up my main menu with options for the following:
- Invoking a TUNE function
- Controlling a Kit-Projects, BITX40, AGC board - I use two relay to replace the supplied toggle switch
- Controlling a SOTABEAMS, Laserbeam-Vari, Audio DSP board
I use the UP/DOWN buttons or the scroll wheel to point to a menu option and the CENTER button to invoke it The TUNE function starts by injecting an audio tone into the mike input, keying the PTT and starting a 20 second countdown timer.? The TUNE cycle ends with a timeout or a press of the CENTER button. The AGC screen offers a choice of FAST, SLOW or OFF and is selected as above. The initial DPS screen offers a choice of setting the DSP Center Frequency (CF) or Bandwidth (BW)?and is selected as above. Depending on whether CF or BW was selected, the screen scrolls through all valid values for the parameter, using the UP/DOWN buttons or the scroll wheel, and the CENTER button to select it This packs a LOT of functionality into a device measuring 32MM in diameter. DISCLAIMER: I have no personal or financial interest in Adafruit - I am just a a satisfied customer Dennis KG4RUL
|
I have killed too many Pis to count. Back in the Raspberry Pi warehouse, the little zero Pis are warned about me. People hide their compute modules when I am in town. But I have never blown one due to heat. - f??
Heat sinks do very little for the pi. A small fan however works wonders.
Max KG4PID
On Tuesday, August 9, 2022, 10:12:00 AM CDT, James Conaway < jwc7992@...> wrote:
Neil,
Did you have heat sinks installed on the pi chips. I forgot to
install mine and will be installing them today.
James NU5E
On 8/9/2022 3:13 AM, Ashhar Farhan
wrote:
Neil,
At 5v, it starts complaining of low voltage. The
raspberry pis i have used have done well at 5.5v. I have also
noted that the official power supply provides 5.4 volts.
- f
On Tue, Aug 9, 2022, 1:12 PM
Niels Jalling < niels@...>
wrote:
Farhan
Why 5.4V ???? Official Raspberry Pi 4 says 5.1V supply
voltage.
My sBitx RPI4 died yesterday!! No boot and constant green
light
I measured the voltage from LM338, it was 5.42V,
de oz9ny, niels
|
Heat sinks do very little for the pi. A small fan however works wonders.
Max KG4PID
On Tuesday, August 9, 2022, 10:12:00 AM CDT, James Conaway <jwc7992@...> wrote:
Neil,
Did you have heat sinks installed on the pi chips. I forgot to
install mine and will be installing them today.
James NU5E
On 8/9/2022 3:13 AM, Ashhar Farhan
wrote:
Neil,
At 5v, it starts complaining of low voltage. The
raspberry pis i have used have done well at 5.5v. I have also
noted that the official power supply provides 5.4 volts.
- f
On Tue, Aug 9, 2022, 1:12 PM
Niels Jalling < niels@...>
wrote:
Farhan
Why 5.4V ???? Official Raspberry Pi 4 says 5.1V supply
voltage.
My sBitx RPI4 died yesterday!! No boot and constant green
light
I measured the voltage from LM338, it was 5.42V,
de oz9ny, niels
|
Thank you, USB to USB, meaning from the sound card to the computer I assume.
On Tue, Aug 9, 2022, 11:07 AM Michael Golden < pldnmayor@...> wrote:
Real easy!? Get an external sound card for your computer, headphones into ubitx mic, computer mic into ubitx external sound.? USB to usb.? Configure want-x and done.? I plan on making a video in a week on this.? But if you have a specific
issue let me know.
Hello group is there some info available, on how to set up the v-6 for ft 8 ? Also has anyone tried to run ft8 on an android device using the v-6?
|
An Alternative for the Traditional Rotary Encoder
I found a neat replacement for the traditional rotary encoder: The Adafruit ANO Directional Navigation and Scroll Wheel Rotary Encoder, Product ID: 5001, combines a rotary input device, similar to the original clicking scroll wheel interface on the first iPods, with five user pushbuttons. I am building up a controller for a BITX40 board that utilizes this device.? The display is a 20x4 LCD display. I am controlling frequency input using the Left/Right buttons to shift an input cursor and the UP/DOWN buttons or the scroll wheel to change the value of a frequency digit. A press of the center button brings up my main menu with options for the following:
- Invoking a TUNE function
- Controlling a Kit-Projects, BITX40, AGC board - I use two relay to replace the supplied toggle switch
- Controlling a SOTABEAMS, Laserbeam-Vari, Audio DSP board
I use the UP/DOWN buttons or the scroll wheel to point to a menu option and the CENTER button to invoke it The TUNE function starts by injecting an audio tone into the mike input, keying the PTT and starting a 20 second countdown timer.? The TUNE cycle ends with a timeout or a press of the CENTER button. The AGC screen offers a choice of FAST, SLOW or OFF and is selected as above. The initial DPS screen offers a choice of setting the DSP Center Frequency (CF) or Bandwidth (BW)?and is selected as above. Depending on whether CF or BW was selected, the screen scrolls through all valid values for the parameter, using the UP/DOWN buttons or the scroll wheel, and the CENTER button to select it This packs a LOT of functionality into a device measuring 32MM in diameter. DISCLAIMER: I have no personal or financial interest in Adafruit - I am just a a satisfied customer Dennis KG4RUL
|
Re: #sbitx user interface layout changes proposla
#sBitx
Some user interface observations and some thoughts
And first - thanks for such a great radio and great fun.? Was planning to build the T41 with a nephew but that went astray and am sure glad to have the sBitx and playing with it more than the KX3 and 7300.
Observations:
1) Keyboard is really important but selectively used
2) Keyboard as is is too small and challenging
3) Keyboard takes up valuable real estate
4) Function button are needed and cool but adjusting is tricky - for instance adjusting the pitch frequently results in turning the record capability on and off as you slide around trying to adjust pitch
5) Function buttons are small
6) Any alternative around burying functions into hidden pull up menus is frustrating and eventually requires a pHD in the Radio manual to become a proficient operator - KX3 complaint
Suggestions to consider:
1) Remove the keyboard and expand the function buttons considerably including a button three times larger on the left that says "Keyboard"
2) Bringing up the keyboard actually brings up a near full-size keyboard with a large button on the left that says "Hide Keyboard"
3) Divide up and separate all the function buttons into two groups based on whether they are push to operate (AGC and Bands) versus adjusting like Volume, Pitch etc...
4) On the left put adjusting buttons with a good separation of screen between the next group on the right which is the push to operate functions
5) In the middle of the two groups but a sliding adjustment bar that is used to adjust the left hand functions
6) The sliding adjustment bar could change color to match the function button selected or could have a bright color and the function name above it when that function is active
Just some thoughts to use as you see fit....
Best
Jim
K5KKB
|
Re: #sbitx user interface layout changes proposla
#sBitx
+1 on K3NG's comments
also
? a main advantage of having a waterfall is click to tune
? command macro language ie: /cmd FT4 - sets frequency to 40 m FT8, AGC off, low and high filters set, WATTS 10, mode FT8
--
? 73
??? Bob? KD8CGH
|
Neil,
Did you have heat sinks installed on the pi chips. I forgot to
install mine and will be installing them today.
James NU5E
On 8/9/2022 3:13 AM, Ashhar Farhan
wrote:
toggle quoted message
Show quoted text
Neil,
At 5v, it starts complaining of low voltage. The
raspberry pis i have used have done well at 5.5v. I have also
noted that the official power supply provides 5.4 volts.
- f
On Tue, Aug 9, 2022, 1:12 PM
Niels Jalling < niels@...>
wrote:
Farhan
Why 5.4V ???? Official Raspberry Pi 4 says 5.1V supply
voltage.
My sBitx RPI4 died yesterday!! No boot and constant green
light
I measured the voltage from LM338, it was 5.42V,
de oz9ny, niels
|
Real easy! ?Get an external sound card for your computer, headphones into ubitx mic, computer mic into ubitx external sound. ?USB to usb. ?Configure want-x and done. ?I plan on making a video in a week on this. ?But if you have a specific
issue let me know.
toggle quoted message
Show quoted text
Hello group is there some info available, on how to set up the v-6 for ft 8 ? Also has anyone tried to run ft8 on an android device using the v-6?
|
Hello group is there some info available, on how to set up the v-6 for ft 8 ? Also has anyone tried to run ft8 on an android device using the v-6?
|
Re: Ubitx v3 & v5 - low vol on start +high pitch in speaker but not headphones
Raj,
Thanks for that suggestion! Will give that a try the next time I am in the guts of the radio.?
73
Mark
|
Re: sBITX transmit problem - low analog drive signal?
#sBitx
Thanks for the reply.
Yes to both.
--
? 73
??? Bob? KD8CGH
|
Re: sBITX transmit problem - low analog drive signal?
#sBitx
Bob, Some parts if the manual are outdated. But there being no output is weird. Do you have an oscilloscope or an RF probe in the shack? - f
On Tue, Aug 9, 2022, 6:52 PM Bob Benedict, KD8CGH < rkayakr@...> wrote: Trying again with this lack of RF out in CW and digital and appears to need overdriven in SSB to get RF output. (/g/BITX20/message/94533). I wonder if the drive signal is being reduced or not properly amplified? There appears to be ten divisions on drive spectrum scope scale. The operating manual suggests mic gain be adjusted to span 6 in SSB. As you can see from the attached images for SSB with audio at about 6 divisions there is no output. When driven hard there is output. The generated CW signal, like the moderate SSB signal produces no output.
Moderate SSB, no output
Loud audio in, RF output
CW, no RF output - same result with digital modes
--
? 73
??? Bob? KD8CGH
|
Re: SBitx Transmitter Active Indicator
#sBitx
I have used this method before with other transceivers with good results.? I just wound a few turns of magnet wire through a clip-on ferrite, soldered to an LED, and clipped it to the antenna in use.? It's not pretty or sophisticated, but it works great.
"If it's stupid but it works, it's not stupid"
73
N1EDC
|
sBITX transmit problem - low analog drive signal?
#sBitx
Trying again with this lack of RF out in CW and digital and appears to need overdriven in SSB to get RF output. ( /g/BITX20/message/94533). I wonder if the drive signal is being reduced or not properly amplified? There appears to be ten divisions on drive spectrum scope scale. The operating manual suggests mic gain be adjusted to span 6 in SSB. As you can see from the attached images for SSB with audio at about 6 divisions there is no output. When driven hard there is output. The generated CW signal, like the moderate SSB signal produces no output. Moderate SSB, no output  Loud audio in, RF output  CW, no RF output - same result with digital modes  -- ? 73 ??? Bob? KD8CGH
|
|
|
Again...easy does it on the adjusting screw...
Jack, W8TEE
On Tuesday, August 9, 2022 at 08:05:08 AM EDT, Anthony Good <anthony.good@...> wrote:
Just found these on The Amazon and ordered them to play with:
(No promotion or endorsement of Amazon implied. ?I can just get these next day from them¡)
Ok understood... I have a few of the below in the parts bin so could potentially modify my sbitx to use this instead... slight overkill though... ;)
On Tue, 9 Aug 2022 at 12:24, Ashhar Farhan < farhanbox@...> wrote: Peter, At present we use an LM33, linear regulator to drop 13.8v to 5v. This takes almost 1.5A current on rx. With this mod, the radio is running cool and the current draw is less than 0.5A. - f What is the purpose of this mod or what is the issue... not quite following ....
See attachment !
On 09/08/2022 4:32 PM, Ashhar Farhan wrote:
Those are the ones. Any idea of the chip used?
MP2307 is the chip Raj ![]()
On 09/08/2022 12:49 PM, Ashhar Farhan wrote:
I swear I had sent an email on this an hour ago... Anyway, I replaced replaced the LM338 with a switching regulator. This one was very inexpensive, less than a dollar. It is also very efficient and small. Unfortunately, I dont know what it is called! I am attaching the pictures. There is a tiny pot on it that controls the output voltage. I added a 22 ohms, fat resistor to the output pins and adjusted the output to 5.4v. Then I took out the LM338 and installed this. The ground is a thick and very short connection to a mounting hole (I used desoldering braid). The input and output is wired to the LM338's pcb holes. I am running this for a while before declaring victory. If someone can identify the chip and the regulator, I will be grateful.
--
Jack, W8TEE
|
Jim K5KKB Steeb
Bob Benedict, KD8CGH
