开云体育

Larry,
Thanks for the tip. Oristo posted a Google Play terminal app (Diginow Serial Terminal) that works on all Android devices I have tried, including the most recent Chromebooks with Google Play Store. Unfortunately, the Serial USB Terminal app does not detect any devices on my Chromebook. Diginow Serial Terminal detects the NanoVNA automatically as a Linux style serial port (dev/ttyAMA0).

Standard caveat is that if your Android device doesn't support OTG, or Google Play Store in the case of Chromebooks, then neither serial terminal app will work.

- Herb

if your Android device doesn't support OTG,
or Google Play Store in the case of Chromebooks,
then neither serial terminal app will work.

It finally occurred to me that careful shopping e.g. on eBay
yields a fairly recent Android device with bad ESN cheaply
with less trouble than trying to update Android an older device

Oristo,
I ordered a NanoVNA-H which arrived today. In addition to now having a case, it has the battery display diode already installed and also has firmware 0.2.3.2 installed for upgrading without using a jumper to get into the DFU mode.

As for the Android NanoVNA WebApp (APK off-line version), it now works with USB-C Android 7.0+ devices that wouldn't work with my other NanoVNA. NanoVNA-H has the USB-C 1500 ohm resistors installed so I guess if I want to have my other NanoVNA recognized I'll have to install the resistors manually.

NanVNA-H didn't help my Chromebook, it still only recognizes the NanoVNA through the Webapp but not off-line using the APK app.

My wife's ZTE phone has android 7.0 and USB-C but from my research doesn't support OTG, so it doesn't recognize either NanoVNA. So before purchasing any bad ESN device do a web search and ensure it supports OTG. You would think all android 7.0+ smartphones do, but some don't.

- Herb

As for the Android NanoVNA WebApp (APK off-line version), it now works with
USB-C Android 7.0+ devices that wouldn't work with my other NanoVNA.
NanoVNA-H has the USB-C 1500 ohm resistors installed so I guess if I want
to have my other NanoVNA recognized I'll have to install the resistors manually.

I insert a small USB hub:
so not direct USB-C to USB-C. That hub is not ideal,
because it does not recharge the Android host while it runs NanoVNA WebApp APK

So before purchasing any bad ESN device do a web search and ensure it supports OTG.

FWIW, while Galaxy Nexus nominally supports OTG, the next generation Nexus 4 does not.

nanoVNA on Galaxy S5 neo, Android 6.0.1, otg cable, via browser chrome, @
everything works perfectly without other drivers / apps etc
--
*73, Lucio I0LYL Rome, Italy*

On Sun, Nov 17, 2019 at 06:31 AM, Lucio I?LYL wrote:

nanoVNA on Galaxy S5 neo, Android 6.0.1, otg cable, via browser chrome, @

everything works perfectly without other drivers / apps etc

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Lucio,
If you install the NanoVNA WebApp Android app from the Play Store and use it to connect to the NanoVNA off-line, does it work for you?

- Herb

no, it doesn't work because it requires Android 7+

--
*73, Lucio I0LYL Rome, Italy*

it requires Android 7+

I have not tried, but:
Amazon Fire 7 tablet is on sale for US$30


My understanding that it is based on Android 7+

and can be tweaked to use Play Store apps

and supports USB OTG
.. so may work for Android NanoVNA WebApp

i installed the Play store on my fairly newish Kindle Fire8
which then let my install the NanoVNA .apk right from the Play store
works a treat
did some repeater work the other day with the setup
really nice to be able to save the graphs as well as the touchstone files
and upload them to google drive