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add image and python samples in README.md

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README.md
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@ -1,11 +1,15 @@
NanoVNA - Low budget tiny handheld Vector Network Analyzer NanoVNA - Very tiny handheld Vector Network Analyzer
========================================================== ==========================================================
<div align="center">
<img src="/doc/nanovna.jpg" width="480px">
</div>
# About # About
NanoVNA is very tiny handheld Vector Network Analyzer, works as NanoVNA is very tiny handheld Vector Network Analyzer, works as
standalone, portable with battery, own lcd display. This project aim standalone, portable with battery and lcd display. This project aim
to provide useful measuring tool for RF enthusiast. to provide an RF gadget but useful measuring tool for enthusiast.
This repository contains source of NanoVNA firmware. This repository contains source of NanoVNA firmware.
@ -18,7 +22,7 @@ Install cross tools and dfu-util.
$ brew install gcc-arm-none-eabi $ brew install gcc-arm-none-eabi
$ brew instal dfu-util $ brew instal dfu-util
Otherwise, using toolchains inside LPCxpresso. Like this. Otherwise, use toolchains included inside LPCxpresso. Like this.
$ PATH=$PATH:/Applications/lpcxpresso_7.8.0_426/lpcxpresso/tools/bin $ PATH=$PATH:/Applications/lpcxpresso_7.8.0_426/lpcxpresso/tools/bin
@ -44,7 +48,25 @@ And then, burn firmware using dfu-util via USB.
# Control NanoVNA from Host PC # Control NanoVNA from Host PC
NanoVNA is able to work standalone, but also be controlled from host NanoVNA is able to work standalone, but also be controlled from host
PC. Directory python contains sample script to control NanoVNA. PC. python folder contains some sample scripts to control NanoVNA.
Plot reflection LOGMAG.
$ cd python
$ ./nanovna.py -p
Plot transmission LOGMAG.
$ ./nanovna.py -p -P 1
Plot smithchart.
$ ./nanovna.py -s
Show usage.
$ ./nanovna.py -h
To use nanovna module in Jupyter, see [this page](/python/NanoVNA-example.ipynb).
[EOF] [EOF]

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