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You can all thank AJ3DI Jim, my benefactor, for introducing me to this gadget called Nano NVA. It forced me to take another look at many concepts: resistance, reactance, impedance, PHASE, and of

Sorry Richard, its two points not two cogs in the NanoVNA-App software to upgrade the firmware. Hopefully there's a picture attached.

BTW James THANKS for the step by step... this will help others a lot... the shorting of VDD and BOOTI was confusing since most procedures and comments talked of a JUMPER... there was none here...

James, thanks for the input, as I stated below l was able to get the device in DFU mode after shortening the pins (not a jumper on this version) found the device... was able to load it but as I stated

Larry also very good point about trying via the Win10 app did not work will try terratem to see and let you know

Larry Battery issuesw is a valid point, I had tried that alrady sorry to say! :( Next!

Here is a list that I've made with the steps that I took to get the device to be seen by my compute Richard. Hopefully others can expand on this if I've missed any steps out. Hope it helps. Connect

Just to add to this Richard, i could only see STM Device in bootloader in Universal serial bus devices within device manager before doing a right click and update driver which let me select the driver

Hello Richard. It seems like you're having similar problems to me yesterday. It was diving me mad too. The advice about reading the Absolute Beginners Guide to NanoVNA v1_5.pdf helped me out but it

Richard, maybe these instructions might help you? Absolute Beginner's Guide to The NanoVNA , Chapter "NanoVNA FIRMWARE UPGRADE". It is in the files section of this group. 73 Martin 9A2JK

Hi Richard, Okay, I see you've gotten to the point where you have a white screen (if all is true, it's because your device is in DFU mode). Please turn it on if the screen is still white and I assume

Thank you so much for this tutorial! It is so good!!! Terry NQ4Y

Ditto. Would love to hear the presentation accompanying the slides. Jim KQ9I

Very good Barry! Please let us know when you finally decide to release a YouTube recording of you narrating your slide presentation. I will be first in line to watch it! Regards, Gregg -- VE6WGM

One of the pitfalls of making component measurements is using the wrong impedance measurement technique. In this post I am using a NanoVNA-H4 and measuring a 1K and a 3K resistor to see how accurate

Richard, verify you can access the unit via the console through a terminal app like putty or teraterm. If you can access that way, you have a display issue.? Some forum members, including myself,

Unsolved the battery and see if it runs when connected by USB. Sometimes, a dead liion battery will prevent the inverter from starting up.? On Wed., 24 Feb. 2021 at 4:47 p.m., Charlie N2MHS via

/almost/ all of it..... http://phil-mont.org/presos/FebPreso21.mp4 Enjoy! -- jim fisher Jedijf AJ3DI www.aj3di.com HamshackHotline ext: 14423 "Do, or do not. There is no 'try.'" -- Jedi Master Yoda

Thanks, Barry, you did a good job on this. I was only wishing you had narrated or provided slides with your explanations as well, though. I agree with Jim Lux, your PowerPoint should be on YouTube, so

a) You wind a few turns on a core and measure the R and X, then back that out to u' and u'' vs frequency. b) Or you use the manufacturer's data sheets with the same information. One could probably