Date   
Re: Gordon Gibby Digital Interface

Dale Hardin
 

I registered on the site to see a manual.  Couldn't download anything because "my basket was empty".  Could you send a manual so I can look it over?  Thanks, Dale

On Wed, Sep 18, 2019 at 7:55 PM N8DAH <Dherron@...> wrote:

I might be a little off but I feel like some have gotten a little crazy with prices on kits like this so I felt starting my own site was the best solution. I won't make millions but its fun to kit them and I love to build so its not all bad.

As long as I make enough to put food on the table and keep getting parts/boards I am happy. This helps a lot of people get gear and kits at a affordable rate, it also allows those that can't build a little help too.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!



--
Dale Hardin
24750 State St. Unit 487
Elberta, AL 36530
251-597-9256

--
Dale Hardin, KS4NS
Elberta, AL

Re: Gordon Gibby Digital Interface

Jonas Sanamon
 

Hi David,

If only more people reasoned like this, our society would look different (to the better).  
I take my hat off for You!

73 from Jonas - SM4VEY

Den tors 19 sep. 2019 kl 02:55 skrev N8DAH <Dherron@...>:

I might be a little off but I feel like some have gotten a little crazy with prices on kits like this so I felt starting my own site was the best solution. I won't make millions but its fun to kit them and I love to build so its not all bad.

As long as I make enough to put food on the table and keep getting parts/boards I am happy. This helps a lot of people get gear and kits at a affordable rate, it also allows those that can't build a little help too.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: No answer in Antuino group

Rob Bleumer
 

Thanks fòr the answers.
Rob PA0RBL

Anuino and uBitx in the news

 

Re: Gordon Gibby Digital Interface

Gordon Gibby <ggibby@...>
 

Can I teach you how to make the connection to the sound card and let you add that to the kit, because you could save the “assembled” buyers a ton of trouble for doing that for them.  The part is only five dollars, and the labor to make the connection is only about five minutes, but it will take the average person 20 or 30 minutes because they don’t know what they’re doing.  

If you take apart the $5 sound card, drill the case , solder make the connections, and put it back together, leaving the wires for them to solder to the board, you should sell that partially assembled section for $8 dollars at least, because you have made the kit buyers far better off—-then all they have to do is wire to their radio and it is ready to go!!!



On Sep 18, 2019, at 20:55, N8DAH <Dherron@...> wrote:

EXTERNAL EMAIL: Exercise caution with links and attachments.


I might be a little off but I feel like some have gotten a little crazy with prices on kits like this so I felt starting my own site was the best solution. I won't make millions but its fun to kit them and I love to build so its not all bad.

As long as I make enough to put food on the table and keep getting parts/boards I am happy. This helps a lot of people get gear and kits at a affordable rate, it also allows those that can't build a little help too.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Gordon Gibby Digital Interface

 

I might be a little off but I feel like some have gotten a little crazy with prices on kits like this so I felt starting my own site was the best solution. I won't make millions but its fun to kit them and I love to build so its not all bad.

As long as I make enough to put food on the table and keep getting parts/boards I am happy. This helps a lot of people get gear and kits at a affordable rate, it also allows those that can't build a little help too.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Raduino Pill

John Scherer
 

Hi Joe,

Haven't seen any development on this board in some time.  I'm sure you've been busy.  Any chance there has been any progress on this?  I'd love to get the cad files for the board.
--
John - N0CTL - Fulltime RV in a 40' motorhome

Re: Gordon Gibby Digital Interface

Gordon Gibby <ggibby@...>
 

​I snapped up two of those before he runs out.......takes me 30 minutes to solder one togehter (including the sound dongle) and he just took off a good chunk of that!!!  


I'm going to find the boxes I use and post those here also.    And also the 500 ohm pot for those wanting a panel mount TX control.   The RX is set-and-forget


gordon



From: BITX20@groups.io <BITX20@groups.io> on behalf of Gordon Gibby <ggibby@...>
Sent: Wednesday, September 18, 2019 3:56 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


​I would suggest you get familiar with how to crack open a 1475, and how to solder to them, and offer the entire thing as an option also -- it is duck soup to do it when you know now, and you get your +5V out of it for free also --- and that is a significantly huge improvement over the effort others will have to do, in order tolearn how to make those connections.


it makes it way more reliable as well....but people may destroy one sound dongle before they get the hang of soldering the +5 wire to the tiny red line coming in from the computer.    i do it with ease now.    




From: BITX20@groups.io <BITX20@groups.io> on behalf of Gordon Gibby <ggibby@...>
Sent: Wednesday, September 18, 2019 3:52 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


You are absollutley NUTS to offer it for $20   ASSEMBLED.   That is very little over what the  PARTS cost us.   

never again will I solder one together----I'm just ordering from YOU!!!! 


Because there is a ground plane, you may even get away with not enclosing this, but you'll do better if you just screw the board to a small piece of wood (or double-stick-tape to some cardboard) and put it in a small tea tin or something.   I found tin boxes for $2 each.


If you make the TX gain ccontrol a 500-ohm panel mount, you'll have much better control of the TX signal....  That's what i do for HF.  For VHF, the little trimmer works fine.   


i use the $5 Adafruit 1475 cound card, and I literally drill a hole and solder the wires to the right places, after I pop apart the white plastic, of course.   See here:   https://www.adafruit.com/product/1475​  They are not great soundcards,,,,but they work.  




From: BITX20@groups.io <BITX20@groups.io> on behalf of N8DAH <Dherron@...>
Sent: Wednesday, September 18, 2019 2:42 PM
To: BITX20@groups.io
Subject: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


Ladies and Gents

 Gordon Gibby, KX4Z has offered us a great little kit to release and its now ready!

This digital interface has all the bang with a great price.

On board 5v regulator that you can power from 12-13.8v or you can leave it off for direct 5v input.
Built in VOX PTT via reed relay
PTT LED
Input and Output gain control
Audio Isolation transformer 600:600ohm

The kits are available for 15$ or 20$ assembled https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=120

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Gordon Gibby Digital Interface

Gordon Gibby <ggibby@...>
 

​I would suggest you get familiar with how to crack open a 1475, and how to solder to them, and offer the entire thing as an option also -- it is duck soup to do it when you know now, and you get your +5V out of it for free also --- and that is a significantly huge improvement over the effort others will have to do, in order tolearn how to make those connections.


it makes it way more reliable as well....but people may destroy one sound dongle before they get the hang of soldering the +5 wire to the tiny red line coming in from the computer.    i do it with ease now.    




From: BITX20@groups.io <BITX20@groups.io> on behalf of Gordon Gibby <ggibby@...>
Sent: Wednesday, September 18, 2019 3:52 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


You are absollutley NUTS to offer it for $20   ASSEMBLED.   That is very little over what the  PARTS cost us.   

never again will I solder one together----I'm just ordering from YOU!!!! 


Because there is a ground plane, you may even get away with not enclosing this, but you'll do better if you just screw the board to a small piece of wood (or double-stick-tape to some cardboard) and put it in a small tea tin or something.   I found tin boxes for $2 each.


If you make the TX gain ccontrol a 500-ohm panel mount, you'll have much better control of the TX signal....  That's what i do for HF.  For VHF, the little trimmer works fine.   


i use the $5 Adafruit 1475 cound card, and I literally drill a hole and solder the wires to the right places, after I pop apart the white plastic, of course.   See here:   https://www.adafruit.com/product/1475​  They are not great soundcards,,,,but they work.  




From: BITX20@groups.io <BITX20@groups.io> on behalf of N8DAH <Dherron@...>
Sent: Wednesday, September 18, 2019 2:42 PM
To: BITX20@groups.io
Subject: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


Ladies and Gents

 Gordon Gibby, KX4Z has offered us a great little kit to release and its now ready!

This digital interface has all the bang with a great price.

On board 5v regulator that you can power from 12-13.8v or you can leave it off for direct 5v input.
Built in VOX PTT via reed relay
PTT LED
Input and Output gain control
Audio Isolation transformer 600:600ohm

The kits are available for 15$ or 20$ assembled https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=120

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Gordon Gibby Digital Interface

Gordon Gibby <ggibby@...>
 

You are absollutley NUTS to offer it for $20   ASSEMBLED.   That is very little over what the  PARTS cost us.   

never again will I solder one together----I'm just ordering from YOU!!!! 


Because there is a ground plane, you may even get away with not enclosing this, but you'll do better if you just screw the board to a small piece of wood (or double-stick-tape to some cardboard) and put it in a small tea tin or something.   I found tin boxes for $2 each.


If you make the TX gain ccontrol a 500-ohm panel mount, you'll have much better control of the TX signal....  That's what i do for HF.  For VHF, the little trimmer works fine.   


i use the $5 Adafruit 1475 cound card, and I literally drill a hole and solder the wires to the right places, after I pop apart the white plastic, of course.   See here:   https://www.adafruit.com/product/1475​  They are not great soundcards,,,,but they work.  




From: BITX20@groups.io <BITX20@groups.io> on behalf of N8DAH <Dherron@...>
Sent: Wednesday, September 18, 2019 2:42 PM
To: BITX20@groups.io
Subject: [BITX20] Gordon Gibby Digital Interface
 
EXTERNAL EMAIL: Exercise caution with links and attachments.


Ladies and Gents

 Gordon Gibby, KX4Z has offered us a great little kit to release and its now ready!

This digital interface has all the bang with a great price.

On board 5v regulator that you can power from 12-13.8v or you can leave it off for direct 5v input.
Built in VOX PTT via reed relay
PTT LED
Input and Output gain control
Audio Isolation transformer 600:600ohm

The kits are available for 15$ or 20$ assembled https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=120

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Gordon Gibby Digital Interface

Laurence Oberman
 

Ordered
And Thanks
Summers over so time to get back to my ubitx projects
Regards
KB1HKO
Laurence Oberman

On Wed, Sep 18, 2019 at 2:42 PM N8DAH <@N8DAH> wrote:

Ladies and Gents

Gordon Gibby, KX4Z has offered us a great little kit to release and its now ready!

This digital interface has all the bang with a great price.

On board 5v regulator that you can power from 12-13.8v or you can leave it off for direct 5v input.
Built in VOX PTT via reed relay
PTT LED
Input and Output gain control
Audio Isolation transformer 600:600ohm

The kits are available for 15$ or 20$ assembled https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=120

73
--
David

N8DAH
Kit-Projects.com

Shop is open!

Gordon Gibby Digital Interface

 

Ladies and Gents

 Gordon Gibby, KX4Z has offered us a great little kit to release and its now ready!

This digital interface has all the bang with a great price.

On board 5v regulator that you can power from 12-13.8v or you can leave it off for direct 5v input.
Built in VOX PTT via reed relay
PTT LED
Input and Output gain control
Audio Isolation transformer 600:600ohm

The kits are available for 15$ or 20$ assembled https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=120

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Never used V3 uBitx Board Available

David
 

Yes

Re: Nextion with KA78T05

Lawrence Galea
 

When dropping down voltage I always use more than one regulator in series to split the dissipation.
E.g. 7809 or 7808 from the nominal 12V then to the 7805 and bolt them to the aluminium case or to a heat sink with thermal compound.
They are cheap enough not to bankrupt you.
Take care when buying from Ali etc
Regards
Lawrence

On Tue, Sep 17, 2019 at 11:50 PM Razvan (M0HZH) <razvanfatu@...> wrote:
Maximum current draw for the 5" Nextion (backlight @ 100%) is 410mA 
Arduino Nano ~20mA
Si5351 (all outputs enabled) ~22mA

Assuming 13.8V input, there's over 4W of thermal power to be dissipated. As Allison already explained, whatever IC you'll use it'll need a heatsink.

Also, try to keep the heat away from the Si5351 oscillator crystal as it would generate frequency drift.

Re: Nextion with KA78T05

Razvan (M0HZH)
 

Maximum current draw for the 5" Nextion (backlight @ 100%) is 410mA 
Arduino Nano ~20mA
Si5351 (all outputs enabled) ~22mA

Assuming 13.8V input, there's over 4W of thermal power to be dissipated. As Allison already explained, whatever IC you'll use it'll need a heatsink.

Also, try to keep the heat away from the Si5351 oscillator crystal as it would generate frequency drift.

Re: Nextion with KA78T05

MVS Sarma
 

Check , raduino with nextion miight need 1amp odd. You cant work at 100% with input 12 or 13.5v.

If the 7805 input is just 3v above what you said is understandable.

Better try a genuine 78s05 it might manage. 
All the best

Sarma vu3zmv

On Tue, 17 Sep 2019, 4:35 pm Razvan (M0HZH), <razvanfatu@...> wrote:
Why would you need another regulator ? The LM7805 is designed for 1A output and the 5" Nextion display + Raduino uses about 500mA (per specs).

You only need a heatsink for the LM7805.

This will be true for any other linear replacement you use (KA78T05 / 78S05 etc) as the dissipated power is the same.

Re: Nextion with KA78T05

_Dave_ AD0B
 

Have had success with the stock 7805 mounted on the raduino. Have 4 of the critters with up to 3.5" nextions I use a stock power transistor heat sinks with an additional hole. To mount it.

Have found mounting the 7805 out of the front raduino offers more room if the board is mounted properly in the case.
--
73
Dave
k0mbt
Ham_Made_Keys

Re: SDR and Ubitx freq not the same.

Arvo W0VRA
 

On Tue, Sep 17, 2019 at 12:55 AM, Werner de Vos wrote:
The thing is, when I connect a RTL Dongle (hooked up the CEC way, with cat control via SDR console) all works fine exept the RTL-SDR RX frequency is off. So for example. receiving with SDR 14.076MHz is 14.0775. 
From this example, are you saying that your software shows the SDR at 14.076, but it's actually receiving at 14.0775?

Then the RTL-SDR and your software need to be calibrated.

Which SDR software are you using?

Re: Nextion with KA78T05

ajparent1/kb1gmx
 

Very simple the 7805 and kin are linear regulators and at 500ma the max voltage that 
can be tolerated before the power dissipated as heat is about 1.5W which places the
input voltage at not more than 8V, you need to be at more like 7.5 due to heating.

Now add a decent chunk of metal, a heat sink, and that goes up depending on
the size of the heat sink.

How to calculate all that is trivial, the series current though the device
(current into pin1) times the voltage across it (voltage from pin 1 to pin3)
and that in watts of heat dissipated.  *Note the 78xx series of regulators
must have about 2V minimum across it to regulate (for 5V part that's
about 7V).  Even at 100-150ma a heatsink (not less than 2" square exposed
air) is advised.  The maximum temperature before shutdown or damage is
about 125C (hot enough to burn skin).

Max wattage is dependent on quality of heatsink but the 2.5degreesC/Watt
is the limit or about 40W but max current is usually reached before that
and in some cases max voltage.  However to get that out of the nominal
7805 that means a heat sink of about 2x2 inches with .5" fins with some airflow.

For those making up their own circuits insure there are a 1uf (or larger) at 
Pin 1(input), and .1uf on pin 3 (output) to ground close to the regulator as
it can oscillate and that will cause failure like behavior.

I started using those regulators when the first came out in the early 70s for
microcomputers (8008 and on) and I have a bag of them from the early
80s I still use.  Good reliable part, cheap too but often abused and
misused.

Allison

Re: SDR and Ubitx freq not the same.

Bill Lamm
 

I have had the coffee today.. maybe need to keep a white board at my side when I read these posts?!