Date   

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: 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: 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!

patt896
 

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

 

thx, Richard 


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: 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: 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: 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


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


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"

 


Re: Arduino SSNA display

William R Maxwell
 

I do hope we manage to find a way to keep the option of on-board display and keyboard alive, as I think that would really make the project something special. Sorry if this sounds a little like a VK conspiracy but most of we VKs now appearing on this group have a long association and history of co-operation on other projects. We now probably tend to all think alike :)

Bill, VK7MX

On 20/09/2013 11:59 AM, vk3pe@... wrote:
 
JIm, you might like to look at this project (kit) which sells for about $100 all up with display for inspiration. It can be bought with PC interface only for half that or add the seperate display driven serially.  Or, a bluetooth pcb that displays on an Android phone. Schematics are available on the page also.
 
I hope this gets through, i seem to have trouble replying to posts


Re: Count me in!

Larry Przyborowski
 

Me too. Please count me in for a pcb.

Tnx in advance.

73, Larry


Need MMIC

Jerry Haigwood
 

Hello All,

     I have a need for a couple of Mini-Circuits MMICs specifically the ERA-3.  If you have a couple of these that you can spare, Please contact me with price and shipping cost.

Jerry W5JH

"building something without experimenting is just solder practice"

 


Re: Arduino UNO digital I/O

Nick Kennedy
 

Oops, well I'm talking beyond my knowledge level here.  I was thinking of the standard LCD Hitachi interface.  I guess we'd be thinking TFT or something for the graphical screen.  Not sure what the standards are there for I/O.


I took a quick look at Adafruit and I see one that requires 14 (!) lines, but another that uses SPI says it just needs 4 or 5 digital pins to send data to the display.


Regarding multiplexing pins, I'm looking at my PIC log power board and I see that I have one pin that's used for data out to the LCD and for UART transmit, while another has three uses:  data to LCD, UART receive, and DDS clock.


73-


Nick, WA5BDU


Re: Arduino SSNA display

N5IB
 

Hi Glenn,

For some reason the body of you messages was blank. Looks like Yahoo is partially FUBAR.

If you want, send to <n5ib@...> direct


Re: Arduino UNO digital I/O

N5IB
 

Thanks, Nick,

There certainly are 6 lines available. bits 0 and 1 are used up when the serial interface (even just the USB) is enabled. But the rest of the low 8 buts is uncommitted. So you send the data as a pair of nybbles?

Could you perhaps post a bit of info to help me and others. Suggest a display model that works in that mode (would need to be operable in a graphic mode) and if d2 - d7 would be appropriate to use.  If you have a circuit sketched that would be great. My only experience with LCDs has been ready-to-go kits, and programming the RS-232 interfaced ones.

Jerry did point out that the A/D lines can be used as digital. But the concern is introducing switching noise when reading adjacent pins as analog.

Jim, N5IB


Re: Arduino UNO digital I/O

Nick Kennedy
 

Not sure what replies you have have already had since the Yahoo interface is acting a bit weird as to showing other messages in the thread.


I usually use the 4-bit version of the LCD interface.  Then an E and and RS line are needed.  You can tie the R/W line to "write only" usually.  So six lines are needed.


I've also been known to multiplex or share lines for multiple purposes.  If a line on the LCD is an input and the LCD will ignore it except when it gets a command to readthe data lines, you can use it for other purposes in the same project.


73, 


Nick, WA5BDU



Arduino SSNA display

glenn percy
 


Re: Arduino UNO digital I/O

glenn percy
 

 


Re: Arduino UNO digital I/O

glenn percy