H David...
i have been looking at this project and as soon as my bitx arrives, I will work on integrating it. I am a fairly proficient developer, so it shouldn¡¯t pose any problem.
ill keep you, and the group, posted.
/ Gerry
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Re: uBITX woes, feeling disheartened.
#ubitx
Hi nick pullen:
"Hi Gordon, yes Q70 shuts off on TX,
Carl, I will check, that would explain why I see 13v across the coil but no actually
engagement.
I'll check the GNDREF of the relay.
Does anyone have a link to the pin out of these relays? I couldn't find anything on
Google...
73 OMs"
Soooooooo....if Q70 ceases to get collector +12V in TX that means that K1 is working in general.
K1 drives K3 through pins 12V-->pin5 K1--->pin 1 K1 ---------->? coil of k3
So now the next question is...do you see ANY SIGNFICANT output power on the antenna coax when you transmit?? ?If you do, then that means in transmit K3 is actuated.? ?
You've already told us that you heard broadcast stastions in receive and that after you added the filter you got rid of them, suggesting that K3 is "de-actuated" in RECEIVE.? ?Are you still hearing normal stations in RECEIVE?? ?If you have both transmitter
output during transmit, AND? you're hearing stations during receive, then K3 is working and you can turn attention elsewhere.? ?If NOT then we zero further in.? ?
Gordon.
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Hi Gordon, yes Q70 shuts off on TX,
Carl, I will check, that would explain why I see 13v across the coil but no actually engagement.
I'll check the GNDREF of the relay.
Does anyone have a link to the pin out of these relays? I couldn't find anything on Google...
73 OMs
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Hello all,
I just fired up the radio for the 1st time and the tuning does not work. If I tune up or down, it will change .050 then go back to .000 as I turn the knob further. Also, when I press the encoder knob in, it says "Band Select", but nothing happens when I turn the knob. When pressed again, it says " Press to Confirm" and when pressed it goes back to frequency readout. I can hear static when with antenna connected and it will go into transmit. It seems all else is working.
I wired the encoder per the picture on step 3.1, and NOT using the schematic, as I believe it is not correct (doesn't match the picture). Does the yellow wire need to connect to chassis ground? Is that my problem?
Any help greatly appreciated!
Jeff?
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Recently I noticed a thread on the group regarding a DSP filter designed
by Gareth Gi1MIC.? Although he primarily designed it to be fitted inside
an FT-817 he does say that it would operate perfectly as a stand alone
unit in a powered speaker.? I was very keen on this and (rather rashly
it seems) bought a Teensy to build one. The circuit is ridiculously
simple and I did not think that I would have any problems with it.?
HOWEVER, although he mentions an encoder control for setting the filter
centre frequency and some means of switching between filters, he gives
no details of how this should be done.? I have contacted Gareth to ask
for help but he seems uninterested and merely suggested that I learn
programming as it was all in the code.? At my advanced age learning to
programme is a daunting task (although I am trying).
Is there anyone on the group who could help me?
What I want is simply a means of selecting the various filters (probably
with push-buttons or a rotary switch) and a means of fitting an encoder
to select the filter centre frequency.
The link to the project is :-
David G4LDT
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A prior discussion said a fast blow 2.0 amp, I've only seen draws in the 1.3 amp range, ?so I've been happy with that fuse so far.?
John
On Jan 6, 2018 11:47 AM, "Jason N3YUG" < jbr13@...> wrote: I am starting to build my uBITX here, and am wondering what size fuse I should use???
Jason
N3YUG
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Re: uBITX woes, feeling disheartened.
#ubitx
Here's what I get if I draw out the relay pinouts (attached)
N5IB
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Re: uBITX woes, feeling disheartened.
#ubitx
For the relays, think of them as a 16 pin DIP package, but with some pins not used.
The pin numbers on the uBITX schematic can be used to draw up the pinout on a 16 pin array.
Pins 2,4,67 on one side, and 10,11, 13, 15 on the other side will be missing (empty gaps)
N5IB
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Re: W0EB's Keying Adapter
The principal problem is that A6 and A7 can not be used as digital pins.
Now, since the level detecting keyer scheme sorta works on A6, why not use A7 to do the same sort of thing, but to implement the PTT function - a much simpler task.
That would release A3, which **can** be used as a digital pin.
With enough cleverness, A7 could serve double duty and detect PTT **and** the encoder switch, freeing A2 as well to be digital
Now there would be two free digi pins to make a more reliable keyer, **plus** A6 becomes free for some analog duty, like voltage monitoring or S-meter, etc.
All this pure speculation, as my uBITX is but a gleam in someone's eye right now :^))
N5IB
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Re: uBITX woes, feeling disheartened.
#ubitx
Hi Gordon, yes Q70 shuts off on TX,
Carl, I will check, that would explain why I see 13v across the coil but no actually engagement.
I'll check the GNDREF of the relay.
Does anyone have a link to the pin out of these relays? I couldn't find anything on Google...
73 OMs
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Re: W0EB's Keying Adapter
First off, I'm not a programmer so that fix will have to be done by someone else. ?My keying adapter was and still is an attempt at a temporary fix to allow the rig to actually operate CW in a reasonable manner until someone with more programming savvy than me could fix the program in a more elegant manner. ?Using the FET switching circuit on the paddle inputs did not improve the operation of the keyer enough to make it work right. ?However, using one stage of the FET circuit on the key input DID make it usable for hand keys and even bugs with less than perfect contacts. ?An external keyer should work without my adapter as long as the ON resistance of the keyer's output stage is in the milli-Ohm range which will make the uBITX's keying circuit happy. There were enough people having trouble initially and were unhappy with even hand key CW operation (including myself) that ?I started looking for some sort of a fix. ?
As I stated earlier, my simple FET adapter will allow reasonable CW operation until Ashhar Farhan or some other good programmer comes up with a program fix that works.
Jim Sheldon, W0EB
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On Jan 6, 2018, at 1:11 PM, KD8CGH < rkayakr@...> wrote: If you abandon paddles, wouldn't it be easier to change Farhan's code to only detect 2 levels or configure A6 to be a digital I/O?
As a bonus you could add CW Key mode and use A6 as a digital input and add Cw Paddle mode to use A6 & A7? for the digital inputs for the paddle.
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Re: W0EB's Keying Adapter
If you abandon paddles, wouldn't it be easier to change Farhan's code to only detect 2 levels or configure A6 to be a digital I/O?
As a bonus you could add CW Key mode and use A6 as a digital input and add Cw Paddle mode to use A6 & A7? for the digital inputs for the paddle.
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Who was the person who was building a uBITx via? a bunch of proto PC boards?? I¡¯d like to get a few of those boards if you have extras.? I have some new ideas. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? ? email:? bill@... ?
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Yoshua,
I compared the v1.20 code against the latest version - the only difference
is that since v1.20 we implemented the SPOT button and the capacitive
touch sensors.
Normally scanning will be stopped when the SPOT button is pressed or when
the CW key goes down (either the normal mechanical key or the capacitive
touch sensor).
Perhaps your issue has something to do with this?
Do you have the touch sensor mod installed and does it work correctly?
Is the SPOT/Fine tune button working as it should?
73 Allard PE1NWL
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On Sat, January 6, 2018 04:10, Joshua Bagwell wrote: yes the 1.27.3 sketch. I have step set to 500 and delay at 1000. The VFO
A/B monitoring doesn't function either. I also tried the v1.27.4 sketch
tonight and it does the same thing, though v1.20 still functions fine.
On Sat, Dec 23, 2017 at 6:43 AM, Allard PE1NWL <pe1nwl@...> wrote:
Yoshua, "latest code"- do you mean v1.27.3? or v2.02?
(I quickly tried it with v2.02 and it still works fine on my BitX40)
What scan step and scan delay values did you set?
Does the VFO A/B scanning work OK?
73 Allard PE1NWL
On Sat, December 23, 2017 05:42, Joshua Bagwell wrote:
I recently had to replace the nano due to messing up the USB port. When I
installed Allards lastest code the scan function no longer works. I
programmed it to start at 7100 and end at 7300. It tunes to 7100 and
doesn't move. I reverted back to 1.20 and the scan function works fine.
Thank You,
Joshua
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Re: No amps on power up
#ubitx
Kirk
The instructions are correct. Don't fit the Raduino just check the current.
If you fit the Raduino and you have not fitted the 4.7K resistor on the keyer then the ubix may go into transmit all with no 50 ohm load!
73
Mike
G0CVZ
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Re: No amps on power up
#ubitx
Well, I feel kind of dumb now. No, I didn't have the Raduino or anything else installed. In fairness to me, the instructions were pretty explicit about checking the power draw?before attaching anything but the power connector. I interpreted that to be like a checkpoint, as in "let's verify that your board didn't break in shipping before we go through all the work of completely assembling it".
My enclosure should arrive today, so I suppose I'll try again once it's all together.
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I am starting to build my uBITX here, and am wondering what size fuse I should use???
Jason
N3YUG
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Re: uBITX woes, feeling disheartened.
#ubitx
?Hmmm....did you ever measure any OUTPUT from the relay to confirm that Q70 or some other stage was getting power when it shouldn't be?? ??
cheers,
gordon
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Make sure that diode D8 is installed with the correct orientation, and use your ohn-meter to make sure that pin 9 of the relay is really connected to GNDREF.?
If D8 was installed backwards, your coil may not get enough current through it to switch.?
73,?
Carl? K0MWC
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Re: uBITX woes, feeling disheartened.
#ubitx
Make sure that diode D8 is installed with the correct orientation, and use your ohn-meter to make sure that pin 9 of the relay is really connected to GNDREF.?
If D8 was installed backwards, your coil may not get enough current through it to switch.?
73,?
Carl? K0MWC
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Re: BITX QSO Night, Sunday, January 7, 7pm Local Time, 7277 kHz in North America, 7177 kHz elsewhere
On Fri, Jan 5, 2018 at 08:23 am, Arvo KD9HLC wrote:
And ?BITX stations, too?
Of course!?If it wasn't so cold in the basement, I might have had mine working by now! ? -- John - WA2FZW
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Re: uBITX woes, feeling disheartened.
#ubitx
Hi, I get full 13v at the coil during TX... I put the DVM across the terminals of K3 and am not seeing any change in TX... It like the relay isn't kicking in, this is with a new relay too...
Time for bed, sleep on the issue...
73
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Nick VK4PP
Jim Sheldon
Bob Benedict, KD8CGH
K9HZ
Allard PE1NWL