开云体育

Hi,

Does anybody have the hardware mods to bring the Antuino up to V2.1? The page is missing,
Firmware is still available though.

Joel
N6ALT

Do you mean this zip file?

It does have the scematic.

73
Evan
AC9TU

I guess that's what I'm looking for, I remember putting a ten turn pot in mine and adjusting it until something read right, then removing it, measuring it and replacing a chip resistor with a new value, that's the info I'm really looking for. I also found a file on my computer that is called Antuino2.2 master, is that latest, will it work with my hardware modified? I can understand Farhan abandoning this but it would be nice if he maintained the documentation. I never really used mine and now I would like to experiment with it.

Joel
N6ALT

Hi Joel,

The file you listed is the newer software that does not have the schematic.??

Here is the YouTube video where Hans describes the new functionality in the new software:


It is more about how to use it than the device's details.

I updated the software on my unmodified Antuino, so I believe it will work on yours.? If my memory serves, the change was to adjust for some units that showed attenuation errors due to too much gain.

There was a mod to add a voltmeter of sorts to go with the added section on the display.? That was documented with a hand-drawn sketch.? I have attached a file with a picture.

73
Evan
AC9TU

--
Jerry Ponko, AC9NM

Hi Evan,

Thanks for your help in figuring this out. When i turn my Antunio on it comes up to a screen that on the bottom says VTVM and the VTVM icon flickers because I don't have anything connected to A7 on the Nano, so I'm already running the V2.2. So, the V2.1 firmware is for if you don't have the VTVM circuit built and hooked up and the V2.2 is for if you do. I don't see much point in adding the volt meter circuitry so I think I will drop back to the V2.1 firmware. It's terrible getting older and loosing my memory.

Joel
N6ALT

Joel,

I? would not go back to the older version.? There were some bugs and features that Ashhar Farhan fixed and added.? I ignore the flashing numbers.? They go away when you switch to the run mode screen.

Be aware of the shortcomings of the Antuino.? The most significant is the "gaps" in the measurements when the scan is set for a wide frequency range.? I do not remember all the details, but testing for 20-meter harmonics has to be done in steps as the span to the third has gaps.? I tried to correct that by sweeping through the gaps, but the scan time became excessive, and the noise level on the floor got too high.

The competing products are using FFT to do a better job of scanning.? They are also less expensive now or much more capable (TinySA and TinysA Ultra).? The demo video shows that it is an excellent toy to play with and is suitable for antenna tuning in the field or testing low-power circuits.? It is also an excellent tool to learn the Arduino IDE by trying to fix some of the shortcomings.

Have fun playing with it.
73
Evan
AC9TU

Hi Evan,

I have just left it at V2.2. I also calibrated it against my GPS disciplined Frequency counter.

I'm well aware of the limitations of the Antuino, however I'm amazed at how much Farhan has been able to design with home made pieces of equipment like this. I have a Tiny SA, a Tiny SA Ultra, and a Nano VNA, oh and also a RigExpert AA-230 Zoom, so I have many ways to analyze things but that doesn't mean I know how. I'm always learning and thought the Antuino would help me, maybe not, IDK. As for the Arduino IDE, I've been stumbling along with surprising good results for years, I'm always elated when I get a sketch to compile, anyway thanks for your help. 73

Joel
N6ALT