Date   
Re: Caveat Emptor!

Dennis Zabawa
 

It is quite possible that the vendor is selling slightly defective culls from the production line.  Reputable manufacturers clearly mark such items to prevent them from being sold as fully working items.  Others sell them off with no warning, while others destroy them.  Luck of the draw

Re: Caveat Emptor!

Arv Evans
 

John

My experience with high density displays is not any better.  I have 5 of the small 0.92 inch
displays but have not been able to get any of them to work.  These are TWI or I2C interface
and my Arduino does not recognize any.  I have tried the example code, the TWI address search
code, and my own TWI interface code, all to no avail.    At present I seem to be limited to using
the old standard 1602 LCDs, 4-line 16 char LCDs, and using the ttl/USB interface to show Arduino
outputs on my PC. 

Given my non-success experience with the 0.92 inch screens I have been hesitant to invest in
larger wire-bus connected displays.  Your experience seems to say it is good that I have not
purchased larger displays.

I wonder who, if anybody, has had good luck with these type screens?  The wire.h library
seems straight-forward and easy to use, but it just does not work with displays I have tried.
I even used the example code without making any modifications and it still doesn't work.

Arv
_._


On Fri, Jan 26, 2018 at 12:47 PM, John P <j.m.price@...> wrote:
I just received 3 of the MCUFriend 3.5" TFT displays purchased from "accecity2006" on eBay. One of the 3 worked correctly; one was cracked and another one was not displaying text correctly.
--
John - WA2FZW


Re: Caveat Emptor!

Sr Shobe
 

Have done business with same person....the way they are packed and handled by China mail, it is a miracle that anything makes it thru to the US....Mine made it okay......so far!!! Knock on lotsa wood!
Steve/N0AAH

On Fri, Jan 26, 2018 at 2:07 PM, Arv Evans <arvid.evans@...> wrote:
John

My experience with high density displays is not any better.  I have 5 of the small 0.92 inch
displays but have not been able to get any of them to work.  These are TWI or I2C interface
and my Arduino does not recognize any.  I have tried the example code, the TWI address search
code, and my own TWI interface code, all to no avail.    At present I seem to be limited to using
the old standard 1602 LCDs, 4-line 16 char LCDs, and using the ttl/USB interface to show Arduino
outputs on my PC. 

Given my non-success experience with the 0.92 inch screens I have been hesitant to invest in
larger wire-bus connected displays.  Your experience seems to say it is good that I have not
purchased larger displays.

I wonder who, if anybody, has had good luck with these type screens?  The wire.h library
seems straight-forward and easy to use, but it just does not work with displays I have tried.
I even used the example code without making any modifications and it still doesn't work.

Arv
_._


On Fri, Jan 26, 2018 at 12:47 PM, John P <j.m.price@...> wrote:
I just received 3 of the MCUFriend 3.5" TFT displays purchased from "accecity2006" on eBay. One of the 3 worked correctly; one was cracked and another one was not displaying text correctly.
--
John - WA2FZW



Re: Caveat Emptor!

Jack Purdum
 

Do you have the correct I2C address for the displays? You might check that. See:




 Jack, W8TEE



From: Arv Evans <arvid.evans@...>
To: BITX20@groups.io
Sent: Friday, January 26, 2018 3:08 PM
Subject: Re: [BITX20] Caveat Emptor!

John

My experience with high density displays is not any better.  I have 5 of the small 0.92 inch
displays but have not been able to get any of them to work.  These are TWI or I2C interface
and my Arduino does not recognize any.  I have tried the example code, the TWI address search
code, and my own TWI interface code, all to no avail.    At present I seem to be limited to using
the old standard 1602 LCDs, 4-line 16 char LCDs, and using the ttl/USB interface to show Arduino
outputs on my PC. 

Given my non-success experience with the 0.92 inch screens I have been hesitant to invest in
larger wire-bus connected displays.  Your experience seems to say it is good that I have not
purchased larger displays.

I wonder who, if anybody, has had good luck with these type screens?  The wire.h library
seems straight-forward and easy to use, but it just does not work with displays I have tried.
I even used the example code without making any modifications and it still doesn't work.

Arv
_._


On Fri, Jan 26, 2018 at 12:47 PM, John P <j.m.price@...> wrote:
I just received 3 of the MCUFriend 3.5" TFT displays purchased from "accecity2006" on eBay. One of the 3 worked correctly; one was cracked and another one was not displaying text correctly.
--
John - WA2FZW



Re: Apache Case on Sale

Vince Vielhaber
 

The coupon is in the "Final Attempt" flyer for Feb and March. I've yet to see an electronic version of the flyer. It's possible it'll show up after the first of the month on the HF site. I'll post it when I see it.

Vince.

On 01/26/2018 10:47 AM, John P wrote:
_Here's a link! _
<https://www.harborfreight.com/1800-watertight-protective-case-9-316-in-63518.html?utm_source=publitas&utm_medium=monthly-ad&utm_campaign=012018>This
if the January flyer, so it doesn't show the sale price.
--
John - WA2FZW

Re: Something has been blown

Arv Evans
 

Ceasar

It might be worthwhile to make up a little test jig for evaluating IRF510 devices. 
Maybe just a pot to vary the gate bias and a 1K resistor in the drain lead.  Ground
the source lead.  Monitor drain voltage as you vary the gate bias.  At between 3
and 4 volts on the gate you should see drain voltage decrease indicating that the
device is drawing current.  If this current is not adjustable it might indicate a defective
device.  Of course this is just a DC test and not fully representative of RF performance.




In BJT (Bipolar Junction Transistors) we are used to seeing the base draw current
to forward bias the device, but with MOSFETs there is no gate current.  They are
only affected by voltage at the gate.  Once we accept that it is easier to troubleshoot
circuits that have these devices.

An oscilloscope or RF Detector Probe could be used to measure RF at various points
around the IRF510 devices.  You should have at least a couple of volts RF on the
gate lead, and more RF volts on the drain lead.  If nothing on the gate then you could
use the probe or scope to verify presence or absence of RF voltage in the drive section.

Arv
_._


On Fri, Jan 26, 2018 at 9:23 AM, César EA3IAV <Cesarleon@...> wrote:
Thank you Arv

It is weird. I was adjusting the pa with the blue squares and the fuse blew. I changed the fuse and it happened again. It was like that until i changed the transistors... i have quite a few.
now still no power out visible through power meter even in lowest selectir (2w mode)
0,5amps while ppt but as i speak there is no increase on that 
i can hear myself in a close receiver  though...
i feel like these fets are bad

what else could br the reason to not output power?
what is that round blue trimmer for?

i do receive fine btw

i am going tonmy local electrinic shop to buy more fets and fuses 😟


Re: batch shipping

Alan G4NMA
 

I ordered mine on 15th December. Received an email today saying it has been shipped.

Re: Second batch of uBITX shipping? #ubitx

Alex
 

Email this morning to say that mine has been shipped India post.

Ordered 15th December, they're slowly getting through them. Looking forward to getting it!

Alex

Re: Caveat Emptor!

John P
 

On Fri, Jan 26, 2018 at 12:01 pm, Ken wrote:
Contact the seller and have them replaced.
Did that! But thanks for the reminder! Waiting for a response.
 
--
John - WA2FZW

Re: Second batch of uBITX shipping? #ubitx

Alan G4NMA
 

Same for me, ordered 15/12, notified of shipping today. 

Re: Caveat Emptor!

John P
 

On Fri, Jan 26, 2018 at 12:21 pm, Jack Purdum wrote:
Do you have the correct I2C address for the displays?
They're not I2C displays; they're the 3.5: TFTs for the analyzed.
 
--
John - WA2FZW

Re: Apache Case on Sale

KD8CGH
 

The connection to my LCD is a real hack job: two 90 degree headers and a cable with a 180 degree twist and it works fine.
    Bob    KD8CGH

Re: Caveat Emptor!

Ken
 

If they don't replace them, start a claim with ebay

On Fri, Jan 26, 2018 at 3:59 PM, John P <j.m.price@...> wrote:
On Fri, Jan 26, 2018 at 12:01 pm, Ken wrote:
Contact the seller and have them replaced.
Did that! But thanks for the reminder! Waiting for a response.
 
--
John - WA2FZW


Re: remote display was Apache Case on Sale

KD8CGH
 

I have a particularly torturous route with no problems. See my reply in https://groups.io/g/BITX20/message/40383

Re: Caveat Emptor!

Jack Purdum
 

"I have 5 of the small 0.92 inchdisplays but have not been able to get any of them to work.  These are TWI or I2C interface
and my Arduino does not recognize any."

Before you get mouthy, check the initial post.

Jack, W8TEE



From: John P <j.m.price@...>
To: BITX20@groups.io
Sent: Friday, January 26, 2018 4:00 PM
Subject: Re: [BITX20] Caveat Emptor!

On Fri, Jan 26, 2018 at 12:21 pm, Jack Purdum wrote:
Do you have the correct I2C address for the displays?
They're not I2C displays; they're the 3.5: TFTs for the analyzed.
 
--
John - WA2FZW


uBITx.net website

Mike Woods
 

I note that there were almost 3,000 messages on this email list in December and we are currently at 2364 messages in January (and we are not quite to the end of the month!).  If you are not following the traffic, or come to the party late, trying to extract helpful information from the list is not straight forward! That's not to say that the list and the files section aren't helpful.  They are fantastic in fact for emergent discussion!  But a mail group is not the best way for anybody to source tried and true information about anything.  A website is much better at summarising known facts, to prevent endless redesign of the wheel, and answering the same newbie question over and over again.

I figured I should do something about this, so check out http://ubitx.net

The website is at an early stage of development.  It will contain two types of information to begin with - a summary of some of the more interesting items that arise from list discussion, presented as "news" items and a comprehensive guide to constructing and modding.  

You can subscribe to the RSS feed to get news updates.

News items from the last 3 days include:
  • a "top board" for the uBitx (from Martin AE7EU)
  • removing the audio pop on T/R - a new approach (from Gary N3GO)
  • a new CW keying fix (from John AD0RW)
  • a discussion on IRF510 stabilisation fixes (from several list members).

I figured that these news items should reference the actual iogroups list items.  I will update some of the news stories that don't yet reference the original item. The news items have been summarised and/or edited lightly.

The other type of information on the website is intended to be a comprehensive guide to purchasing, assembling, fixing and modding the uBitx.   Static pages will summarise everything that a builder needs to know about a particular issue or extension.   Options for mods will be presented with recommendations for which ones are popular/proven.  Currently, I have begun pages covering the following (many of these have yet to be finished ...):

There's a lot more to be covered, just in the getting started section.  For example:
  • Reverse voltage and over-current protection
  • Microphone options
  • Wiring up an internal speaker, with an external phone jack
  • Wiring up a paddle and straight key
  • Getting support when things go wrong

I look forward to:

  • comments about the website's purpose, layout and example content
  • ways to improve and extend the website further
  • offers of assistance (directly to me at mhwoods@... please)

This will be a moderated website. I want to avoid the situation where  bum advice is shared with others that makes life a misery.

This is about short-cutting research time and eliminating blind alleys that detract from operating or modding time!

I'm off to a Ham Radio BBQ hosted by NZART Kapiti Branch (about 1/2 hour from me).   I look forward to reading the mail later today!  Brickbats, bouquets and all!

73

Mike  ZL1AXG



--
Mike Woods
mhwoods@...

Re: uBITx.net website

Ken
 

Hi Mike

I have not gone through the website, just checked out the home page. But to thank you for doing this.

Ken VA3ABN

On Fri, Jan 26, 2018 at 4:38 PM, Mike Woods <mhwoods@...> wrote:
I note that there were almost 3,000 messages on this email list in December and we are currently at 2364 messages in January (and we are not quite to the end of the month!).  If you are not following the traffic, or come to the party late, trying to extract helpful information from the list is not straight forward! That's not to say that the list and the files section aren't helpful.  They are fantastic in fact for emergent discussion!  But a mail group is not the best way for anybody to source tried and true information about anything.  A website is much better at summarising known facts, to prevent endless redesign of the wheel, and answering the same newbie question over and over again.

I figured I should do something about this, so check out http://ubitx.net

The website is at an early stage of development.  It will contain two types of information to begin with - a summary of some of the more interesting items that arise from list discussion, presented as "news" items and a comprehensive guide to constructing and modding.  

You can subscribe to the RSS feed to get news updates.

News items from the last 3 days include:
  • a "top board" for the uBitx (from Martin AE7EU)
  • removing the audio pop on T/R - a new approach (from Gary N3GO)
  • a new CW keying fix (from John AD0RW)
  • a discussion on IRF510 stabilisation fixes (from several list members).

I figured that these news items should reference the actual iogroups list items.  I will update some of the news stories that don't yet reference the original item. The news items have been summarised and/or edited lightly.

The other type of information on the website is intended to be a comprehensive guide to purchasing, assembling, fixing and modding the uBitx.   Static pages will summarise everything that a builder needs to know about a particular issue or extension.   Options for mods will be presented with recommendations for which ones are popular/proven.  Currently, I have begun pages covering the following (many of these have yet to be finished ...):

There's a lot more to be covered, just in the getting started section.  For example:
  • Reverse voltage and over-current protection
  • Microphone options
  • Wiring up an internal speaker, with an external phone jack
  • Wiring up a paddle and straight key
  • Getting support when things go wrong

I look forward to:

  • comments about the website's purpose, layout and example content
  • ways to improve and extend the website further
  • offers of assistance (directly to me at mhwoods@... please)

This will be a moderated website. I want to avoid the situation where  bum advice is shared with others that makes life a misery.

This is about short-cutting research time and eliminating blind alleys that detract from operating or modding time!

I'm off to a Ham Radio BBQ hosted by NZART Kapiti Branch (about 1/2 hour from me).   I look forward to reading the mail later today!  Brickbats, bouquets and all!

73

Mike  ZL1AXG



--
Mike Woods
mhwoods@...


Re: Caveat Emptor!

Vince Vielhaber
 

Now settle down or I'm sending you to your rooom without dinner!

John wasn't the one with the 0.92 displays. Check your own post!

Vince.

On 01/26/2018 04:30 PM, Jack Purdum via Groups.Io wrote:
"I have 5 of the small 0.92 inchdisplays but have not been able to get
any of them to work. These are TWI or I2C interface
and my Arduino does not recognize any."

Before you get mouthy, check the initial post.

Jack, W8TEE


------------------------------------------------------------------------
*From:* John P <j.m.price@...>
*To:* BITX20@groups.io
*Sent:* Friday, January 26, 2018 4:00 PM
*Subject:* Re: [BITX20] Caveat Emptor!

On Fri, Jan 26, 2018 at 12:21 pm, Jack Purdum wrote:

Do you have the correct I2C address for the displays?

They're not I2C displays; they're the 3.5: TFTs for the analyzed.

--
John - WA2FZW


Re: uBITx.net website

W2CTX
 

I applaud your efforts.  You took on a big task keeping your website up to date
with all that is happening in the future on the email group.

rOn



From: Mike Woods <mhwoods@...>
To: BITX20@groups.io
Sent: Friday, January 26, 2018 4:38 PM
Subject: [BITX20] uBITx.net website

I note that there were almost 3,000 messages on this email list in December and we are currently at 2364 messages in January (and we are not quite to the end of the month!).  If you are not following the traffic, or come to the party late, trying to extract helpful information from the list is not straight forward! That's not to say that the list and the files section aren't helpful.  They are fantastic in fact for emergent discussion!  But a mail group is not the best way for anybody to source tried and true information about anything.  A website is much better at summarising known facts, to prevent endless redesign of the wheel, and answering the same newbie question over and over again.

I figured I should do something about this, so check out http://ubitx.net

The website is at an early stage of development.  It will contain two types of information to begin with - a summary of some of the more interesting items that arise from list discussion, presented as "news" items and a comprehensive guide to constructing and modding.  

You can subscribe to the RSS feed to get news updates.

News items from the last 3 days include:
  • a "top board" for the uBitx (from Martin AE7EU)
  • removing the audio pop on T/R - a new approach (from Gary N3GO)
  • a new CW keying fix (from John AD0RW)
  • a discussion on IRF510 stabilisation fixes (from several list members).
I figured that these news items should reference the actual iogroups list items.  I will update some of the news stories that don't yet reference the original item. The news items have been summarised and/or edited lightly.
The other type of information on the website is intended to be a comprehensive guide to purchasing, assembling, fixing and modding the uBitx.   Static pages will summarise everything that a builder needs to know about a particular issue or extension.   Options for mods will be presented with recommendations for which ones are popular/proven.  Currently, I have begun pages covering the following (many of these have yet to be finished ...):
There's a lot more to be covered, just in the getting started section.  For example:
  • Reverse voltage and over-current protection
  • Microphone options
  • Wiring up an internal speaker, with an external phone jack
  • Wiring up a paddle and straight key
  • Getting support when things go wrong
I look forward to:
  • comments about the website's purpose, layout and example content
  • ways to improve and extend the website further
  • offers of assistance (directly to me at mhwoods@... please)
This will be a moderated website. I want to avoid the situation where  bum advice is shared with others that makes life a misery.
This is about short-cutting research time and eliminating blind alleys that detract from operating or modding time!
I'm off to a Ham Radio BBQ hosted by NZART Kapiti Branch (about 1/2 hour from me).   I look forward to reading the mail later today!  Brickbats, bouquets and all!
73
Mike  ZL1AXG


--
Mike Woods
mhwoods@...


UBITX Touch Control TFT Display

Joe
 

Finishing up the case for my UBITX
The display provides full touch control along with physical optional buttons.
100 memory channels
Tuneable Bfo
Vfo A B M
All bands selectable from front display
Uses cheap tft touch displays i use a 2.8
Low cost - Atmega 2560 for lots of pins and better perfomance.
Si5351 for dds

More to come.......

Coded by VU2SPF 
Tech support VE1BWV

73
Joe
VE1BWV

First phase nearly completed