Date   
Re: uBitX - problem with power draw and failed chip

Michael Aiello
 

Okay I will do that, and continue with wiring up while I'm waiting for the new 
chip 
Thanks  
Mike N2HTT 

On Feb 13, 2018 10:01 AM, "Raj vu2zap" <rajendrakumargg@...> wrote:
Mike,

Now break the 2822 and remove the pins one by one. Put in a socket.
If everything looks alright then you can get audio from the volume control top lead
and listen on an ampli speaker.

Raj

At 13-02-2018, you wrote:
Okay thanks Raj. It will bed a few days before I get the new chips, I'll review the boardĀ Ā
73 Mike N2HTTĀ

On Feb 13, 2018 9:31 AM, "Raj vu2zap" < rajendrakumargg@...> wrote:
Mike,

The voltage is fine, something else blew it. Chip cracking mean catastrophic failure..

Check for solder bridge short etc.. these boards are checked before they are sent out.

Raj

At 13-02-2018, you wrote:
>My supply voltage was 13.8, is that too high? That is nominal 12v supply.
>
>I will check the chipĀ
>orientation before replacing theĀ
>
>Thanks
>Mike

Re: Raduino seperate

LKNDAVE
 

makes sense now. thanks
i never did a pcb so i was clueless. thanksa again glenn
dave

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

 

Hi Ian,
 So what is the latest version of firmware? I down loaded 1.01 and installed it via Xloader, however when i turn on the uBITX it shows 1.00 on the display. Now I notice there is a version 1.02. Where do i get the latest greatest version? Thanks for doing this.

Joel
N6ALT

News Bulletin

Leland Lannoye
 

This is a news bulletin from WA9AOE.  μBitX board was shipped today.  Order was placed on December 20, 2017.  Hope this helps others.

Lee, WA9AOE


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Re: Ubitx delivery suggestion

Art Howard
 

I called DHL and they told me to leave a note on the door with my shipping number and my signature.
 As it turned out I was home when it was delivered by a courier and no signature was required anyhow so go figure.

On 12 Feb 2018 5:56 pm, "Bill Robbins" <wa8cdu@...> wrote:
I will be gone for an extended time when my DHL ubitx arrives. If a signature is required does anyone have a suggestion to get my hands on it.  Neighbors are too remote.

Bill



Re: Ubitx delivery suggestion

Vince Vielhaber
 

If anyone's worried about future deliveries, when the DHL guy or gal gets to your house, ask them for a signature release. DHL will keep it on file so you don't need to worry about it. I have them on file with both DHL and FedEx.

Vince.

On 02/13/2018 11:17 AM, Art Howard wrote:
I called DHL and they told me to leave a note on the door with my
shipping number and my signature.
As it turned out I was home when it was delivered by a courier and no
signature was required anyhow so go figure.

On 12 Feb 2018 5:56 pm, "Bill Robbins" <wa8cdu@...
<mailto:wa8cdu@...>> wrote:

I will be gone for an extended time when my DHL ubitx arrives. If a
signature is required does anyone have a suggestion to get my hands
on it. Neighbors are too remote.

Bill



Re: News Bulletin

Leland Lannoye
 

Note, I used the correct symbol, my micron, in the μBitx nomenclature,  hihi!



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Leland Lannoye <wa9aoe@...>
Date: 2/13/18 11:11 (GMT-05:00)
To: BITX20@groups.io
Subject: [BITX20] News Bulletin

This is a news bulletin from WA9AOE.  μBitX board was shipped today. 
Order was placed on December 20, 2017.  Hope this helps others.

Lee, WA9AOE


---
This email has been checked for viruses by AVG.
http://www.avg.com




Re: News Bulletin

Tim Gorman
 

I ordered mine on Dec 20 also. Got it yesterday!

Got the Paypal notice today! Must be running behind on doing the
billing!

tim ab0wr

On Tue, 13 Feb 2018 11:11:10 -0500
"Leland Lannoye" <wa9aoe@...> wrote:

This is a news bulletin from WA9AOE.  μBitX board was shipped today. 
Order was placed on December 20, 2017.  Hope this helps others.

Lee, WA9AOE


---
This email has been checked for viruses by AVG.
http://www.avg.com



Re: Raduino seperate

MVS Sarma
 

On Sun, Feb 11, 2018 at 09:09 am, KC9SGV wrote:
 
The stick clamped by a vice holding the pcb is nice to watch.

Perhaps we can simply buy a double sided sticker tape.
 first stick to a table surface or some such
 After peeling off the top protective layer, we can press the PCB on to top gum area.
 as we never solder across the whole pcb at same time
 sticker manages.
 later we can take off the pcb and clean the gum on the bottom side with Iso propyle alcohaul.

regards
 sarma
 vu3zmv

Re: uBitX - problem with power draw and failed chip

 

Hey Mike,

I know why it didn't work, it doesn't glow in the dark:-) No seriously folks, that's a bummer. The TDA2822M's speaker output is not referenced to ground and must be isolated from ground. It's a BTL amp. I toasted one first time I used it because I didn't know this. Just a thought.

Joel
N6ALT

Re: uBitX - problem with power draw and failed chip

 

Disregard that last comment Mike, I was confusing the TDA2822 with the TDA7052A, oops.

Joel
N6ALT

Re: uBitX - problem with power draw and failed chip

Michael Aiello
 

Hey Joel,  thanks for the head's up. I'll look for any possible ground path. The board was sitting on a piece of wood on the bench, it's not likely I shorted a pin, but I'll be more careful. 


On Feb 13, 2018 12:41 PM, "Joel Caulkins" <caulktel@...> wrote:
Hey Mike,

I know why it didn't work, it doesn't glow in the dark:-) No seriously folks, that's a bummer. The TDA2822M's speaker output is not referenced to ground and must be isolated from ground. It's a BTL amp. I toasted one first time I used it because I didn't know this. Just a thought.

Joel
N6ALT

Re: wrong frequency after software change. #ubitx

Michael Shreeve
 

I'm sure there is a less mystical answer to this. I still think its something to do with software as it was working perfectly in a BIXT40 before I put the header in it so as to use it for a uBITX. But, you never know, maybe I missed a little solder jumper or something on that order. Still checking (again, with a microscope , 20power, this time. On a laptop screen.) But, I've checked my work, its very methodical and switches at 10mhz to lsb. Which leads me to really wonder about the possibility of one bit being off. I had read that one bit is changed (by the original)

On Mon, Feb 12, 2018 at 9:50 PM, Mike Woods <mhwoods@...> wrote:
Michael

I suspect I may have slightly misread your email post. 

You have a uBITx not a BITx40?

Is your Raduino 400kHz off frequency (or did you mean 400Hz)?   It does sound like it could be a similar problem to Yvon's if it is 400kHz off frequency and the LSB/USB are backwards! i.e. the EEPROM has become scrambled.  However, reinstalling the stock firmware should fix that.  If it doesn't the EEPROM may in fact be damaged in the Nano. It is possible there is something really wonky with your replacement Raduino: either the Nano chip (most likely) or the SI5351a chip.

Mike ZL1AXG


On 13/02/18 6:27 AM, Michael Shreeve wrote:
Another strange twist which may be related. I changed a BITX40 rad to uBITX Raduino. Hardware change, you remove the 5 pin plug and put a header in its place. I really looked hard for any other differences in Hardware. Saw none. So, I programed with original software. Crazy, but LSB is USB on 80 and 40 (up to 10mhz) and other than that, seems stable and might be on freq. So, I tried Ians latest 1.01 and LSB is correct, USB is correct, have control also, but freq is off about 400khz. So, found an EEPROM WIPE routine, says it works for all size eproms, and did the wipe. No luck. Still off, I re-loaded the original Ashhar software stil backwards. Thinking I would need to use memory manager but not sure I have the skills. Any ideas ? 

_._
--
Mike Woods
mhwoods@...




--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley



Re: wrong frequency after software change. #ubitx

Michael Shreeve
 

If I were to go back to Ians software, (might as well) , there is a BFO adjustment that I have heard can at least make the audio sound better. One thing I hadn't mentioned, audio sounds terrible with that version using the BITX40 Raduino in a uBITX. cec101 . Guess theres a new one out already.

On Tue, Feb 13, 2018 at 10:08 AM, Michael Shreeve <shreevester@...> wrote:
I'm sure there is a less mystical answer to this. I still think its something to do with software as it was working perfectly in a BIXT40 before I put the header in it so as to use it for a uBITX. But, you never know, maybe I missed a little solder jumper or something on that order. Still checking (again, with a microscope , 20power, this time. On a laptop screen.) But, I've checked my work, its very methodical and switches at 10mhz to lsb. Which leads me to really wonder about the possibility of one bit being off. I had read that one bit is changed (by the original)

On Mon, Feb 12, 2018 at 9:50 PM, Mike Woods <mhwoods@...> wrote:
Michael

I suspect I may have slightly misread your email post. 

You have a uBITx not a BITx40?

Is your Raduino 400kHz off frequency (or did you mean 400Hz)?   It does sound like it could be a similar problem to Yvon's if it is 400kHz off frequency and the LSB/USB are backwards! i.e. the EEPROM has become scrambled.  However, reinstalling the stock firmware should fix that.  If it doesn't the EEPROM may in fact be damaged in the Nano. It is possible there is something really wonky with your replacement Raduino: either the Nano chip (most likely) or the SI5351a chip.

Mike ZL1AXG


On 13/02/18 6:27 AM, Michael Shreeve wrote:
Another strange twist which may be related. I changed a BITX40 rad to uBITX Raduino. Hardware change, you remove the 5 pin plug and put a header in its place. I really looked hard for any other differences in Hardware. Saw none. So, I programed with original software. Crazy, but LSB is USB on 80 and 40 (up to 10mhz) and other than that, seems stable and might be on freq. So, I tried Ians latest 1.01 and LSB is correct, USB is correct, have control also, but freq is off about 400khz. So, found an EEPROM WIPE routine, says it works for all size eproms, and did the wipe. No luck. Still off, I re-loaded the original Ashhar software stil backwards. Thinking I would need to use memory manager but not sure I have the skills. Any ideas ? 

_._
--
Mike Woods
mhwoods@...




--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley






--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley



Re: Raduino Replacemnt, COMING SOON!

Jerry Gaffke
 

Excellent advice!
    https://www.raspberrypi.org/blog/why-raspberry-pi-isnt-vulnerable-to-spectre-or-meltdown/
And if that was too confusing:  https://xkcd.com/1938/

Seriously, unless you are locked into Microsoft or Apple products for some absurd reason
and assuming you aren't too worried about framerates while gaming or the like,
the $35 RasberryPi-3 is a perfectly fine desktop computer for email and web-browsing and reading pdf's.
And absolutely great if you want to play with hardware and python and gcc.  And with the Arduino IDE.

If you don't happen to have a TV with HDMI, an HDMI computer monitor is under $100.

Jerry, KE7ER


On Tue, Feb 13, 2018 at 10:03 am, Dexter N Muir wrote:
No PC? Tut-tut ... Got a TV? With HDMI? Get a Raspberry Pi!

Re: Bitx40 - receiver works great, but do not transmit #bitx40help

Ivan Ilyichev
 

I was replaced Q9 with a new MMBT3904 and now it seems to be ok with my Bitx40. For final transmission testing i build a simplest direct-conversion receiver on SA612 + LM386. I hear myself good, without distorsions. Now - going to air.

Re: Raduino Replacemnt, COMING SOON!

KD8CGH
 

Jerry
  Re: xkcd
   Thanks, I needed that

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Philip
 

Hi Joel.
Mine displays v1.01. I dont think v1.02 is out yet.

Philip
G7JUR

Re: Second batch of uBITX shipping? #ubitx

Terry Morris
 

I ordered January 12, 2018. Only response received (like many before and after me I am sure, was) "We have received your payment of USD 109 on January 12, 2018 through Paypal. Your payment has been included in the 'Pre order' list. The orders are being shipped in the order of the payment received. It is difficult for us to estimate the shipping date for your order. However, we are putting our best efforts to ship them asap. The tracking details of the shipment will be updated on the Paypal transaction once the order is shipped." So I am waiting like many others have had to do and many other will have to do.

Re: Bitx40 - receiver works great, but do not transmit #bitx40help

M Garza <mgarza896@...>
 

Ivan,
Congratulations and great work!

Marco - KG5PRT 


On Feb 13, 2018 1:39 PM, "Ivan Ilyichev" <ilyichev.ivan@...> wrote:
I was replaced Q9 with a new MMBT3904 and now it seems to be ok with my Bitx40. For final transmission testing i build a simplest direct-conversion receiver on SA612 + LM386. I hear myself good, without distorsions. Now - going to air.