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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

Attached spreadsheet contains the formula and you can paste your s2p file on the input tab -- Erik, PD0EK

This is sort of "bump" / dupe. Or more direct approach. Take your pick. This is NOT post for / to users of NanoVNA, This post is about NanoVNA operating / embedded software hacking. I am planning to

A quick note, for those running from the Python source: "scipy" is required for the TDR impedance measurement display, and you therefore need to install this, for example by re-running the "pip

Hello Bryan, I am trying to calculate the T-Check value from the NanoVNA-Saver .S2P file with LibreOffice Calc, but I did not got the T-Check formular adopted. This is already done in the attached

Its in Octave (Matlab equivalent) for now till I know what algorithms to use I have a S11 model for the cable (includes estimating the frequency dependent loss and the Complex static impedance (did

Hi Erik - Do you plan a GitHub repository? What approach for solving model parameters?

Hi Oristo Here is the Screen control for the FA-VA5 I have received from AE5CZ Larry Goga and have permission to distribute as I like Kind regards Kurt -----Oprindelig meddelelse----- Fra:

Hi Oristo The Yahoo VNWA group is in the process to move to a io group which is a better platform for a Wiki which I am sure will come. I have large number of document I will "flood" the Wiki with in

And here is the nanoVNA data with the impedance correction for the long cable ( -0.075 -0.56i ohm) Substantial oscillations are still there and these do NOT come from the calibration kit or the cable

Sadly, I lack the playful approach. Yes, I researched FA-VA5 before nanoVNA, but avoided the software until your prompting because of allergy to controls hidden in graphic user interfaces. That is why

On Tue, Nov 5, 2019 at 05:48 AM, gin&pez@arg wrote: Dear gin&pez@arg How are you sure the errors to be corrected are larger than the uncertainty in your measurement. e.g. you are not trying to correct

And here is a hint a first order cable correction (assuming the cable impedance is not exactly Z0) can improve the results The model corrects for the long cable impedance mismatch for the 3GHz VNA