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hello, there is also the opensource project: https://hforsten.com/improved-homemade-vna.html 30mhz up to 6ghz, the project is around 300 euros. I'm not saying to make it the same but it can be a

Hello Kurt, Yes I know that the curve is not so very good. But it was just a priciple test for the procedure chain: NanoVNA-saver .S2P file save to a T-Check curve with minimal effort, with free

Hi Erik Thank you for the spreadsheet I did mistakenly comment your T-Check to Reuters and did right away see the mistake I imported your s2p file after modification of the header, as a surplus S at

Hi Reuter I had to modify your header to import the s2p file. There was a S too much ! ListType=Lin (This addition was probably not needed) # HZ S RI R 50 (at the end of this line there was a S too

#73 : erik@... - 5 November 2019 : /g/nanovna-users/message/6495 Dear Erik, Thank you very much indeed for your interest in our work and also for the chance you give us to explain it

Hope someone can give me some insight on the TDR impedance measurement display. I have attached TDR impedance displays for two cable assemblies. The first cable assembly was made up of a 0.3m length

Thank you, that is usefull information for everyone! I haven't decided what to do. I might fix my nanoVNA, buy another or wait for the announced "nanoVNA 2.0". My version isn't completely dead but the

Eventually, but getting something built first in a "friendly" IDE, then whittling to fit, might be faster. Also, with Bluetooth, local display becomes highly optional.

Hello Erik, Now it works, see the attached diagram: NanoVNA_T-Check.png Thanks again for the very good spreadsheet. 73, Rudi DL5FA

Actually, read the whole thread, including /g/nanovna-users/message/1795 With all the features stuffed into the current firmware, builds are starting to overflow storage. You'll need

/g/nanovna-users/message/1508

Oops, just found this article: https://wonderfulengineering.com/10-best-bluetooth-modules-for-arduino/ .. which recommends HC-06: "use it simply for a serial port replacement" ~ US$1.40

I mean to rip the BT module out of the device... Also, I just had a quick look at the pin mapping of the F072 as used in the NanoVNA.? PINS 30 & 31 (not currently used) can be remapped to USART1_TX &

Hello Erik, Thank you very much for your provided spread sheet. At the moment I am still fighting with the decimal point/comma topic :-( 73, Rudi DL5FA

I do not find hacks turning ELM327 into BT bridge; cheap HC-05 has good Arduino support, https://components101.com/wireless/hc-05-bluetooth-module but wants substantial code. A "smart" BT LE shield is

Yes, but SPI to USB host would be simpler than trying to add Bluetooth to nanoVNA firmware https://www.amazon.com/dp/B01EWW9R1E

Actually, I was thinking a little more on what uses a serial to BT bridge: every one of those really cheap OBD2 BT car diagnostic readers has one built-in. Those readers cost $5 and up so the BT

Oristo, All Vaclav needs to do is use one of the unused serial ports on the chip and use a BT to serial module. I was looking at the F072 specs and it appears the serial pin I was thinking if using is

Hi Vaclav - Unless you find a Bluetooth dongle that supports USB OTG, I think that this is doomed. I found no 64-pin STM32 chip, as in nanoVNAs, that does USB OTG,

Herb, thanks very much. I assume the two devices are different enough that the manual for the smaller one will not be of help. I almost purchased the smaller one but thought why not get the larger