NanoVNA
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ttrftech
Very Tiny Palmtop Vector Network Analyzer
Hello, Very impressed about the project. I’ve seen it can be used to up to 900mhz but in practice can i measure the impedance at 868mhz?
Hello, I’m trying to port your project to the STM32F407 processor and ili9488 480x320 display, the NanoVNA-F project, which is based on FreeRTOS, was taken as the basis. It seems...
STR: 1) Open any numpad editor, for example DISPLAY => SCALE => ELECTRONIC DELAY 2) Touch right bottom corner of screen 3) Make sure there is a rendering bug and...
During experiments I found a offset of 12kHz to give better performance If needed I can provide the sin/cosine table
blink LED while scanning leads to worse measurement due to voltage fluctuations and pulse interferences. This is because LED blinking leads to load change for the battery and voltage is...
CALでやってる線形補完を、角度と振幅の補完に変更すべき。ステップ間の位相回転が小さいと誤差は小さいが、位相差が大きくなるとかなり効いてくる。
There is a little imbalance of gain, which leads to some discontinuities. You can find it by reset calibration and setup DISPLAY TRACE S11 LOGMAG scale=1 with reference position about...
To easily extend features, F072 is not enough to extend something valued.