DiSlord

Connect to PC, and correct v_bat measure setting (depend from used diode) Run putty or another terminal program Reset: 'vbat_offset 0' Measure: 'v_bat' Commpare vs Real multimeter measurenent. Set correction...

You can unerstand how it work only if read source code and scheme Basic is, si5351 generate 2 frequency freq and freq + offset Freq go to CH0 reflect and...

Yes you correct in dsp.c on sin/cos table multiple - it DFT for IF frequency for ref and measure After process recive 2 complex IQ vector of ref and measure...

For return to normal leveler mode which allows moving of the marker (by clicking the wheel left/right). Need click at top screen (or possible touch not calibrated) PS i can`r...

Thanks, i add sweep operation for collect data in next Pull Request to fix it

Revert add this feature, need find better solution :(

Screen artifacts Screen update goes by cells size 32x32 pixels (processor can,t fast draw all screen) Fore faster screen update used function mark_cells_from_index() for detect cell for update, and detect...

in file plot.c 2 bit buffers for detect cell for clear and update `uint16_t markmap[2][MAX_MARKMAP_Y]; ` Then before screen render need cache line list for render in for all traces...

I fix this in https://github.com/ttrftech/NanoVNA/pull/126 Use solution 1

Here is termal foto of my device