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Re: ND6T AGC implementation for uBIT-X

[email protected]
 

I would like to have one of each boards also.

thanks
Stephanus Nell
K6NG
Re: No audio on UbitX, U1 issue? #ubitx-help #ubitx

Evan Clark
 

I am using a stereo headphone jack. I just ordered a few TDA2822M chips from Amazon, they should be here soon, so I'll update when I get them.

Thanks
Evan

On Tue, May 22, 2018, 5:00 PM Skip Davis via Groups.Io <skipnc9o=[email protected]> wrote:
Are you using stereo headphones? If you have a mono plug in the jack your shorting the audio to ground. You need to use a TRS plug in the jack supplied with the UBITX.

Skip Davis, NC9O?

On May 22, 2018, at 19:32, Daniel Conklin <danconklin2@...> wrote:

Evan, the WX labeled audio chips can blow out if the voltage going to them is beyond their tolerance? If you had the volume pot wires switched, then you may have blown out the chip as soon as you put power to the rig. I soldered a 6 volt regulator in the amp's supply line before I put power to it and it's been purring along nicely for almost two months. When they blow, most people are putting in a socket so they can replace the chip easier and there are a few good options discussed here on the board. So, that's the recommendation.
73, Dan? W2DLC?

Re: BitX40. USB mod?

M Garza
 

Hi Jeff,
Look here for the software and hardware mods needed for USB.


Allard did a tremendous job documenting all the steps needed.? Take a look, it is not that difficult.??

Here are the instructions in a direct link:


Hope this helps

Marco - KG5PRT

On Wed, May 23, 2018 at 8:51 AM, JeffG via Groups.Io <jeff.goodley@...> wrote:
Hi

thanks for the reply ... the software change is probably beyond me, the Raduino software is preinstalled.
Is there a way I can alter the cuicuit hardware and install a switch to change modes??

Jeff
G6EXF


Re: ND6T AGC implementation for uBIT-X

 

I should have those too.? One of each (pop, agc).

Let us know when to send money, and where.

Allison
Re: Bitx without raduino #ubitx

 

Never has been a "no Raduino" version in the past.
Though you could probably sell the Raduino easily enough in this forum.
I'd keep it as a spare.
Or hack it into a Sweeperino.
? ??http://hfsignals.blogspot.com/p/sweeperino.html


On Wed, May 23, 2018 at 07:10 am, Bo Barry wrote:
Thinking of getting a second one for experimenting with the 2560/touch screen.

Any savings or source of one without the Raduino?
Bo W4GHV '54
Re: share your BITX success stories

Bo Barry
 

Any tips on setting the audio input levels? ?I've found it is critical.
Re: Best way to unsolder the Nano?

 

I had occasion to snip out out my Nano recently, wasn't as easy as I expected.
See second paragraph of post? ?/g/BITX20/message/50027

A minor edit to that post:
<? Then remove what's left on the black plastic from that header?
>? Then remove what's left of the black plastic from that header?

And while you're at it, you might consider socketing the Nano,
placing it on the opposite side of the the Raduino as described in that post.
I haven't noticed any downsides for doing this.

I used flux and solderwick to get as much of the solder out of there as I could,
then heated each pad with a soldering iron and blew the hole clean.
I just used my breath, an air compressor and shop vice would aid the process.?
Or a solder-sucking workstation.
A fairly easy board to do this on as traces are thick and hard to damage, no internal ground planes.

Jerry


On Wed, May 23, 2018 at 06:30 am, Jack Purdum wrote:
I think most will tell you to snip the legs of the Nano, remove it, and carefully unsolder each pin from the board, exercising care not to overheat the board and lift the pads.
?
Jack, W8TEE
?
. . .

?

On Wednesday, May 23, 2018, 9:20:52 AM EDT, <Kd4epg@...> wrote:
?
?
Need device on the best way to unsolder the nano board.
All help gratefully received.
--
72 and God bless
KD4EPG
Re: Best way to unsolder the Nano?

 

made a tool for my Ungar iron, about 1" long piece of Copper?
with 1/4-20 thread to hook to the element.
Apply to one, clear holes. Apply to other side repeat.
The I use the hot air to loosen the remaining solder to pick it off.

If it is broken I cut it off as there nothing to save.

Of course if the chip is bad and your game... It is not that bad to put a
new one down.??

Allison
Re: Best way to unsolder the Nano?

Bo Barry
 

Clipping leads, heat a pad and either blow 'right hard'(southern saying) or poke with a tapered punch. Works great.

I found a nice electric desoldering tool on eBay but they didn't say that 220VAC was needed. Returned it.
Bitx without raduino #ubitx

Bo Barry
 

Thinking of getting a second one for experimenting with the 2560/touch screen.

Any savings or source of one without the Raduino?
Bo W4GHV '54
Re: UBITX filter bandwidth ?

 

Change ECM? & try...


On Wed, May 23, 2018, 4:32 AM Ralph Mowery <rmowery42@...> wrote:
Has anyone measured the bandwidth of the uBITX filter ???

I have tried it two ways. one with a SA/TG at the 12 mhz filter, and another by feeding in a audio tone from 200 hz to 2800 hz into the mic input from a function generator and using a wattmeter..? Both ways seem to give me a 3 to 6 db bandwidth of about 1600 hz.??

The receive audio seems ok to me, but several hams I talk to almost every day say the audio is not very good, like it is restricted.? I tried moving the BFO up and down about 100 hz at a time to get the best and they tune for the best signal from me incase the frequency is not exact.??

I did change to a Baofeng hand mic and the audio was somewhat better.? I am waiting on some parts to come in to repair a Shure desk mic to see how it sounds.? I am using a similar mic on my Icom 746pro.? I tried feeding my Drake L4B amp and getting around 150 watts out so the signal level is up the about the same as the Icom.? The audio did not seem to change when running the amp or not except it was stronger as it should be.

de ku4pt

Re: Raduino CAD Files

 

Rudolf

Very good summery.

This might be in your document, but there are also variants of the Blue Pill on EBay that have "Arduino Compatible" bootloaders already installed. Some say they have "Maple Mini" compatible bootloaders. They might be one and the same, I don't know. I have some of the former, but haven't tried them yet. In general, a good resource for anyone interested in these Pill boards is

Re: BitX40. USB mod?

JeffG
 

Hi

thanks for the reply ... the software change is probably beyond me, the Raduino software is preinstalled.
Is there a way I can alter the cuicuit hardware and install a switch to change modes??

Jeff
G6EXF
Re: Raduino issue

 

Thanks, Jack. Had no idea about battery. I'll have to look it up. I thought i'd just have to load firmware after installation


On Wed, May 23, 2018, 6:32 AM Jack Purdum via Groups.Io <jjpurdum=[email protected]> wrote:
Probably obvious, but don't forget a button battery for the RTC and add code to set it when you're tethered to the PC, using its system clock to get the current date and time. There's plenty of code online for formatting the data to an LCD display.

Jack, W8TEE

On Wednesday, May 23, 2018, 9:13:51 AM EDT, Sam Tedesco <stedesco619@...> wrote:


Ordered nano and clock board. Gonna start with nano then the 5351 ic. Anything else I should consider?
Thx

On Tue, May 22, 2018, 9:10 PM Sam Tedesco <stedesco619@...> wrote:
Ubitx on 1.061. That's what i figured. Best plan of attack?

On Tue, May 22, 2018, 9:03 PM Ashhar Farhan <farhanbox@...> wrote:
In tightenting up the encoder, you probably shorted some digital line to the ground. Was this on the bitx40 firmware or the ubitx?

- f

On Wed, May 23, 2018 at 9:30 AM, Sam Tedesco <stedesco619@...> wrote:
Was tightening up tuning pot and rig went desd. Restarted and display only shows firmware version. Won't give frequency. Tried firmware reinstall but same. Nano looks to be communicating properly with pc. Did I lose clock ic?

Thanks
Re: Best way to unsolder the Nano?

 

I use chipquick and wick


On Wed, May 23, 2018, 6:45 AM Ralph Mowery <rmowery42@...> wrote:
I won't say it is the best, but what worked for me two times. Due to my fault while modifying the ubitx I had to replace the nano board.

I used one of the hot air rework stations that can be bought off ebay for about $ 60 . It has a hand held wand that blows hot air out of about a 1/4 inch hole. You keep moving the wand from pin to pin? every second or less. That melts the solder and the whole board can be pulled out at once.? Then I used a solder sucker to clean out each hole that had solder left in it.? Just keep the heat down so as not to lift the traces off the board.? It does take some practice as how to do this.? Look on you tube for many examples of using it with the SMD.


This is the one I used.? There are many sources for them on ebay.? Some from the US and some from China at many? different prices.




You get a hot air gun and a soldering pencil that has some fine tips to replace the nano.? While I would not recommend this for heavy duty work, it holds up well enough for just a hobby.? If it quits, you are not out much money and can always get another.


On Wed, May 23, 2018 at 9:20 AM, <Kd4epg@...> wrote:
Need device on the best way to unsolder the nano board.
All help gratefully received.
--
72 and God bless
KD4EPG


Re: Nextion Display

Bo Barry
 

I started in the 70's and saved my beer money to get more memory chips for my TRS-80. ?
Re: Best way to unsolder the Nano?

 

I won't say it is the best, but what worked for me two times. Due to my fault while modifying the ubitx I had to replace the nano board.

I used one of the hot air rework stations that can be bought off ebay for about $ 60 . It has a hand held wand that blows hot air out of about a 1/4 inch hole. You keep moving the wand from pin to pin? every second or less. That melts the solder and the whole board can be pulled out at once.? Then I used a solder sucker to clean out each hole that had solder left in it.? Just keep the heat down so as not to lift the traces off the board.? It does take some practice as how to do this.? Look on you tube for many examples of using it with the SMD.


This is the one I used.? There are many sources for them on ebay.? Some from the US and some from China at many? different prices.




You get a hot air gun and a soldering pencil that has some fine tips to replace the nano.? While I would not recommend this for heavy duty work, it holds up well enough for just a hobby.? If it quits, you are not out much money and can always get another.


On Wed, May 23, 2018 at 9:20 AM, <Kd4epg@...> wrote:
Need device on the best way to unsolder the nano board.
All help gratefully received.
--
72 and God bless
KD4EPG


Re: spurious signals on FT8 #ubitx

Bo Barry
 

I haven't done any adjustments or calibration yet. ?Been too excited getting it going. I need to Google and get the info to do them.
Thinking an external audio level meter is needed. (my o'scope is too far away)


TNX inputs! Bo
Re: Raduino CAD Files

 

Allen K5ABL said:

> The NXP ARM processors are also usually available in distribution and about the same cost as ST.?

They SHOULD cost the same -- the dies are identical, for equal-specification processors.

73
Jim N6OTQ
Re: Raduino issue

Jack Purdum
 

Probably obvious, but don't forget a button battery for the RTC and add code to set it when you're tethered to the PC, using its system clock to get the current date and time. There's plenty of code online for formatting the data to an LCD display.

Jack, W8TEE

On Wednesday, May 23, 2018, 9:13:51 AM EDT, Sam Tedesco <stedesco619@...> wrote:


Ordered nano and clock board. Gonna start with nano then the 5351 ic. Anything else I should consider?
Thx

On Tue, May 22, 2018, 9:10 PM Sam Tedesco <stedesco619@...> wrote:
Ubitx on 1.061. That's what i figured. Best plan of attack?

On Tue, May 22, 2018, 9:03 PM Ashhar Farhan <farhanbox@...> wrote:
In tightenting up the encoder, you probably shorted some digital line to the ground. Was this on the bitx40 firmware or the ubitx?

- f

On Wed, May 23, 2018 at 9:30 AM, Sam Tedesco <stedesco619@...> wrote:
Was tightening up tuning pot and rig went desd. Restarted and display only shows firmware version. Won't give frequency. Tried firmware reinstall but same. Nano looks to be communicating properly with pc. Did I lose clock ic?

Thanks
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