Date   
The Funduino

Jerry Haigwood
 

Recently, I ordered a Funduino UNO R3 board to compare with the Arduino UNO R3 board.   I ordered this board from power59296 on ebay.com.  The Funduino arrived 10 days after ordering it which I think is very good considering it came from China.  The cost of the Funduino was $10.99 and FREE shipping.  It came with a pretty blue, short USB cable.  When I received it, I plugged it into my computer and I had to add a driver for it.  I have an older XP machine so I went into the control panel, selected “System,” then “Hardware” and then “Device Manager.”  Then under “ports,” I select USB and installed the Arduino driver.  After the device driver was installed, I was able to download the Simple SNA program.  As far as I can determine, the Funduino works just as well as the Arduino for about 1/3 of the price.  The quality of construction is excellent actually better than my Arduino.  On my Arduino, some of the female headers are not straight.  The Funduino does not have that problem.  Overall, I am pleased with the Funduino.  I know that Jim, N5IB, has one on order and maybe he will chime when his arrives.

Jerry W5JH

"building something without experimenting is just solder practice"

 

Graphing program & stuff ...

Nick Kennedy
 

While waiting for the AD9850 board, Funduino board and PHSNA board I'm having a little fun with my own similar setup.  I've been plotting homebrew crystal filters, crystals themselves, and a LPF.


Also thought I'd look for a freeware graphing program that might be better than Excel in some respects.  I've downloaded Data Master 2003 and my preliminary opinion is  that it has some promise. Got it to graph a .CSV data file that I created.  

I had some problems initially with my hardware as my noise floor seemed to be about -50 dBm or so.  By rerouting some cables and so on, I can now get down to about -64 dBm, not bad for most of what I'm doing.

73-

Nick, WA5BDU

Re: Graphing program & stuff ...

Jerry Haigwood
 

Hi Nick,

    The -64dbm is not bad.  However, I am seeing -73dbm from my prototype.   I actually think it might do a bit better.   The prototype is all boxed up and inside the PHSNA box I used RG174 for the Sig Generator out, Freq Counter out and analog input.  I think it might do just a bit better if I had something that went down that low to sweep.  I am going to be building a crystal filter shortly for a measurement receiver and I should be able to see what my true dynamic range is.  I expect it to be about 65db (-10dbm to -75dbm) which isn’t bad for a low cost SNA.  A good SNA would do in excess of 100db.  However, the PHSNA doesn’t cost $20,000 either! ;-)  Let us know how well you like the graphing program.  I am currently using Excel because that is all I got.

Jerry W5JH

"building something without experimenting is just solder practice"

 

From: PHSNA@... [mailto:PHSNA@...] On Behalf Of kennnick@...
Sent: Wednesday, September 25, 2013 10:02 PM
To: PHSNA@...
Subject: [PHSNA] Graphing program & stuff ...

 

 

While waiting for the AD9850 board, Funduino board and PHSNA board I'm having a little fun with my own similar setup.  I've been plotting homebrew crystal filters, crystals themselves, and a LPF.

 

Also thought I'd look for a freeware graphing program that might be better than Excel in some respects.  I've downloaded Data Master 2003 and my preliminary opinion is  that it has some promise. Got it to graph a .CSV data file that I created.  

 

I had some problems initially with my hardware as my noise floor seemed to be about -50 dBm or so.  By rerouting some cables and so on, I can now get down to about -64 dBm, not bad for most of what I'm doing.

 

73-

 

Nick, WA5BDU

Re: Graphing program & stuff ...

Graham <planophore@...>
 

another good app for plotting data is gnuplot. This is an app which has it's roots in Linux but is also available for use in Windows and also OS-X. It works very well and has many (many) features.

Another is GDL - GNU Data Language which is an open source version of IDL - Interactive Data Language

http://www.exelisvis.com/ProductsServices/IDL.aspx

which is a widely application for scientific visualization of data. However, GDL is only available for Linux at this time (I think) but there may be a port for Windows as well.

yet another possibility is Python which has add on libraries containing much of the functionality of standalone apps such as gnuplot and matlab.

Lots of good choices, some with a steeper learning curve than others. My approach is to keep it simple and use a tool which can be used in both Linux and Windows as my preference is Linux but I do on occasion need to use Windows and having the same tools available in both environments is very helpful.

cheers, Graham ve3gtc



On 13-09-26 03:01 AM, kennnick@... wrote:
 

While waiting for the AD9850 board, Funduino board and PHSNA board I'm having a little fun with my own similar setup.  I've been plotting homebrew crystal filters, crystals themselves, and a LPF.


Also thought I'd look for a freeware graphing program that might be better than Excel in some respects.  I've downloaded Data Master 2003 and my preliminary opinion is  that it has some promise. Got it to graph a .CSV data file that I created.  

I had some problems initially with my hardware as my noise floor seemed to be about -50 dBm or so.  By rerouting some cables and so on, I can now get down to about -64 dBm, not bad for most of what I'm doing.

73-

Nick, WA5BDU
_

Re: The Funduino

Gene Dorcas <gene@...>
 

I have some projects that use the Arduino Mega2560.  I just ordered a couple of Funduino Mega and will see if they’re just as good as the ArduinoMega2560 product. I paid about $12.99 each  I think. I’m paying $20 to $30 for the ArduinoMega2560.

 

Gene, W5DOR

gene@...

www.w5dor.com

 

 

From: PHSNA@... [mailto:PHSNA@...] On Behalf Of Jerry Haigwood
Sent: Wednesday, September 25, 2013 3:17 PM
To: PHSNA@...
Subject: [PHSNA] The Funduino

 

 

Recently, I ordered a Funduino UNO R3 board to compare with the Arduino UNO R3 board.   I ordered this board from power59296 on ebay.com.  The Funduino arrived 10 days after ordering it which I think is very good considering it came from China.  The cost of the Funduino was $10.99 and FREE shipping.  It came with a pretty blue, short USB cable.  When I received it, I plugged it into my computer and I had to add a driver for it.  I have an older XP machine so I went into the control panel, selected “System,” then “Hardware” and then “Device Manager.”  Then under “ports,” I select USB and installed the Arduino driver.  After the device driver was installed, I was able to download the Simple SNA program.  As far as I can determine, the Funduino works just as well as the Arduino for about 1/3 of the price.  The quality of construction is excellent actually better than my Arduino.  On my Arduino, some of the female headers are not straight.  The Funduino does not have that problem.  Overall, I am pleased with the Funduino.  I know that Jim, N5IB, has one on order and maybe he will chime when his arrives.

Jerry W5JH

"building something without experimenting is just solder practice"

 

Re: this project, newbie

Mark Dunning
 

Jim

 

I finally got around to making some measurements here on my collection of the Chinese DDS module (7 in total brought from three suppliers). All ran okay at 3.3V.

 

Average current draw (DDS only) while sweeping at 3.3V was 93mA. At 5V it was 136mA. Best performers were the blue modules which have small 125MHz oscillators. The green modules I have, had both the largest current draw and were off frequency the most (400Hz at 10MHz) against 160Hz average for the blue modules. All are useable of course.

 

My test setup uses a PICAXE 18M2 to drive the DDS modules. I am worried about leakage from an Arduino arrangement interfering with minimum signal levels. When I get the time I want to package the DDS and 18M2 inside a shielded box using a serial connection for an interface. Probably not the way to go but still fun to play with. 

 

73's

 

Mark VK6WV

 

"Speaking of power requirements, here are some measurements I made a couple of weeks ago. Arduino and DDS powered from 12 V supply, DDS running on 3.3V regulated
did NOT include the buffer amp yet
while "idling"
         110 mA from 12 V supply
2 mA from USB port
while sweeping
130 mA from 12 V supply
2 mA from USB port

Jim, N5IB"

--- In PHSNA@..., <phsna@...> wrote:

I think that there are two directions that this type of project could take, the first is a bench top device, the second is a portable unit which could be used for all sorts of purposes including antenna analysis.

 

I have been working (very slowly) towards a sweep generator based upon these modules myself. VK5TM has a good post about his work in this area http://www.vk5tm.com/homebrew/dds/dds.php.

 

One problem for portable operation is the power demands of the Chinese DDS modules.

 

It will be interesting to see how things develop.

 

73

Mark

VK6WV

Re: Count me in!

patt896
 

ditto.  Already have Kanga's power meter and a bunch of DDS boards.

 

thx, Richard 

Re: Printed Circuit Boards for SSNA

jean-michel hausseguy
 

Hello ,

A question about the PCB .
Where we could order it ?

Thanks

F6FWT/TR8JH
JMichel

2013/9/19, Jerry Haigwood <w5jh@...>:

Glenn,

The current version of the Simple SNA also has a generator function
built into it. You can use the generator function and a scope to tune an LC
filter. The use of the Arduino will not allow sweeps to be made in real
time. You would need to redesign the unit using a different, faster
processor and probably switch to assembly language. Right now, I do not
know of any plans to change processors, displays, input device, etc.
However, the this is an open system and anyone can take a try at it.

Jerry W5JH

"building something without experimenting is just solder practice"



From: PHSNA@... [mailto:PHSNA@...] On Behalf Of
vk3pe@...
Sent: Wednesday, September 18, 2013 5:59 PM
To: PHSNA@...
Subject: [PHSNA] RE: RE: Printed Circuit Boards for SSNA





4Z4ME's photos on this group show a version using a keypad and display.
While the PHSNA is a nice cheap simple project, it's usefullness for tuning
a filter is limited by the need to use a PC and Xcel to plot the response
each time. Do the authors of this project expect to expand the capabilities
of the PHSNA in the future, to something like that of 4ZME's version? If
so, does the new PCB have this capability (conenctors etc) in the design?



There is an in between possibilty also maybe, that the PHSNA has a display
but no keypad, the sweep rates etc being downloaded from a PC initially. In
many cases this would be OK as the item to be measured is already known in
terms of frequency etc.



Glenn









--- In PHSNA@..., <phsna@...> wrote:

I've made a trial order to ITEAD Studio for some small SMT boards for
another project.. This is a test of their procedures and quality, as well as
the scheme of translating ExpressPCB to gerber files.



Probably be about two weeks or so before I have a verdict. Then I will ask
for a hard count of number of boards requested, and I can set a price point.
At this point it looks line we'll certainly be under $10 including the CONUS
postage. Could be well under if this board house works out. So think about
if you want more than one board, since it's not likely I'll do a second
run.



I'd encourage DX ops, if you wish, to organize some sort of group drop-ship
if there are several folks in an area. It will probably reduce costs. If
anyone wants to volunteer to be a drop ship target, please let me know.



Jim, N5IB








--- In phsna@..., <w5jh@...> wrote:

Well actually, you have plenty of time to order a PCB. Jim has not yet
placed an order because he is trying to get a reasonable count as to how
many people want boards. If you look on yahoo, there is a poll asking for
you input on PCBs. I think he plans to place the order within a week or
two. You can work out a group buy with Jim.

Jerry W5JH

"building something without experimenting is just solder practice"



From: PHSNA@... [mailto:PHSNA@...] On Behalf Of
Garry
Sent: Tuesday, September 17, 2013 5:42 PM
To: PHSNA@...
Subject: [PHSNA] Re: Printed Circuit Boards for SSNA






Is it still possible to order a PCB? Also, in a number of other groups where
these group buys are held, if there is a "critical mass" to one region (such
as Australia) then some kind sole may offer to take all boards and on ship
locally. This often helps reduce the cost to ship from the US.

Regards
Garry VK3XYX



--
Jm Hausseguy

Re: Count me in!

Michael McShan <n5jky@...>
 

Same here for ordering the PCB. I have the meter and most parts, too.

73,
Mike N5JKY


On Sep 28, 2013, at 8:40 AM, repatten@... wrote:

 

ditto.  Already have Kanga's power meter and a bunch of DDS boards.

 

thx, Richard 



---In phsna@..., <k3peg@...> wrote:

Me too. Please count me in for a pcb.

Tnx in advance.

73, Larry

Re: The Funduino

Nick Kennedy
 

I got my Funduino today -- it took 11 days.  Still waiting for the DDS but I'm sure it'll be here way ahead of other stuff I need.

Interesting that the Funduino is marked as "Arduino" and "made in Italy".  Oops.

Regarding plotting programs -- the gnuplot thing might be a good thing for my current lash-up, since I'm using a Raspberry Pi which is a native Linux board.

I've set my software to output to Data Analyzer 2003's "DAT" format if my file extension starts with a 'd', or CSV format otherwise.  Data Analyzer will work with both actually, and Excel probably will too.  The difference is that the DAT format uses a space delimiter while CSV uses commas, and for CSV I put in a header row of "frequency, dBm", which Data Analyzer isn't crazy about.

Also fooling with having the software find and report the frequency for peak response and guess I should also have it find the -3dB points.  Fairly trivial except possibly if you have a plateau at either point and want to select the midpoint of that plateau.  This is for crystal characterization, of course.


73-

Nick, WA5BDU

Re: Printed Circuit Boards for SSNA

N5IB
 

I'm awaiting a small test order from an overseas PCB fab house. Probably
at least a week more, as I received the shipping notification just today
(Sat).
If quality is satisfactory I will place a bulk order for boards. I'll
announce when that's about to happen, and will begin taking orders for
boards.

If this fab house works out the cost will be under $10 postpaid for USA
shipping. DX shipping and payment will have to be determined.
One thing for sure. PayPal will NOT be used for either USA or DX orders.

Jim, N5IB


On Sat, 28 Sep 2013 19:41:33 +0200 jean-michel hausseguy
<jmhausseguy@...> writes:

A question about the PCB .
Where we could order it ?

Re: Printed Circuit Boards for SSNA

glenn percy
 

 

> A question about the PCB .
> Where we could order it ?

Re: Printed Circuit Boards for SSNA

Jerry Haigwood
 

Hi Glenn,

 

Jim and I had a discussion about paypal and since I have a paypal account, I will receive the funds for the boards and transfer them to Jim.  So, you will be able to use paypal.  As soon as Jim gets a price for the boards from the Chinese board house, we will work up a price which will include shipping and paypal charges.  It is not Jim’s intention to make a profit.  Braking even would be nice. ;-)

Jerry W5JH

"building something without experimenting is just solder practice"

 

From: PHSNA@... [mailto:PHSNA@...] On Behalf Of vk3pe@...
Sent: Monday, September 30, 2013 10:28 PM
To: PHSNA@...
Subject: RE: Re: [PHSNA] RE: RE: Printed Circuit Boards for SSNA

 

 

 

Jim, no Paypal will severely limit orders from Dx at least. Other methods of payment are expensive.

 

glenn


---In PHSNA@..., <phsna@...> wrote:

I'm awaiting a small test order from an overseas PCB fab house. Probably
at least a week more, as I received the shipping notification just today
(Sat).
If quality is satisfactory I will place a bulk order for boards. I'll
announce when that's about to happen, and will begin taking orders for
boards.

If this fab house works out the cost will be under $10 postpaid for USA
shipping. DX shipping and payment will have to be determined.
One thing for sure. PayPal will NOT be used for either USA or DX orders.

Jim, N5IB


On Sat, 28 Sep 2013 19:41:33 +0200 jean-michel hausseguy
<jmhausseguy@...> writes:

> A question about the PCB .
> Where we could order it ?

W7ZOI/KAEMX Schematic

patt896
 

May I see one?

 

I suspect that your are taking DCV off the meter?

 

Richard

Re: W7ZOI/KAEMX Schematic

patt896
 

Correction:

 

W7ZOI/KA7EXM... 

Re: W7ZOI/KAEMX Schematic

Jerry Haigwood
 

Richard, are you asking for the power meter schematic or the SNA schematic?

Jerry W5JH

"building something without experimenting is just solder practice"

 

From: PHSNA@... [mailto:PHSNA@...] On Behalf Of repatten@...
Sent: Wednesday, October 02, 2013 7:06 PM
To: PHSNA@...
Subject: [PHSNA] W7ZOI/KAEMX Schematic

 

 

May I see one?

 

I suspect that your are taking DCV off the meter?

 

Richard

Re: W7ZOI/KAEMX Schematic

N5IB
 

Hi Richard,

I don't have permission to post or distribute the power meter schematic, since that's copyrighted material. I'll have to refer you to the June 2001 issue of QST for the article.

The dc voltage fed to the A/D input of the Arduino is taken from the output of an op amp that buffers the AD-8307 output. The input impedance of the A/D is fairly high, so you can have a few K series resistance. You can choose the gain setting resistors on the op amp to make your voltage span match the A/D reference.

Jim, N5IB

Re: W7ZOI/KAEMX Schematic

Michael McShan <n5jky@...>
 

An update version of the schematic is shown on this webpage (very similar to the QST article):


It is posted with Wes' W7ZOI permission.  There is a small change in the battery supply but the power measuring circuit is essentially the same.

73,
Mike N5JKY

On Oct 2, 2013, at 8:09 PM, n5ib@... wrote: 

 

Hi Richard,

I don't have permission to post or distribute the power meter schematic, since that's copyrighted material. I'll have to refer you to the June 2001 issue of QST for the article.


Jim, N5IB


Re: W7ZOI/KAEMX Schematic

Michael McShan <n5jky@...>
 

Actually, now that I've pulled up the original article, there are several small changes from the original schematic (that'll teach me to rely on my memory at 5 AM).  However, they do originate from Wes, so I'm sure these changes are worth considering by anyone that needs to build one now.

73,
Mike N5JKY


On Oct 3, 2013, at 5:41 AM, Michael McShan <n5jky@...> wrote:

 

An update version of the schematic is shown on this webpage (very similar to the QST article):



.


Re: W7ZOI/KAEMX Schematic

N5IB
 

Thanks, Michael, for posting that link to your pages.
I was worried that some folks might not have ready access to the QST archives.
 
Jim, N5IB
 
 
 
On Thu, 03 Oct 2013 05:51:46 -0500 Michael McShan <n5jky@...> writes:

An update version of the schematic is shown on this webpage (very similar to the QST article):
It is posted with Wes' W7ZOI permission.