VDI-RODERICO

[roderico]

this would avoid the problem of different saturation levels, would this introduce any side effect in the X Y signals of the idx?
I didn't do the preconditioning of the signal, but looking carefully at the schematics I see that the signals are filtered at 7.2Hz while in the scope view it can be seen that signals are typically 4-5Hz, so maybe this can be optimized using a wider pass band filter, e.g. from 2-7Hz. A simple way to test if there is an improvement would be just to change C1 and C3 to 1uF, allowing a band of frequencies from 3.4Hz to 7.2Hz

[kroman01]

my modification

[roderico]

very nice video, with your modification the saturation levels would be the same for both channels and it won't be necessary to change the code, could you post the schematics or a drawing with your modifications?

[kroman01]

my video
RT2 inserted before C1 and C3

https://youtu.be/TlqDfK6ebwI

[kroman01]

i will explain how the detector sees these stones .. after setting the ground to zero in static mode over the stone, the leading signal disappears, so it is cut out, in dynamic mode gives a signal in opusczaniu stone, on my video there is no sound on the stone, because I gave in my IDX, the fourth channel X +, to see the earth in this way, I cut these stones in the sound of the speaker, but VDI will show them, because VDI uses X and Y channels

[roderico]

if it were iron it should have given a negative value...

[daluka]

these stones could be some kind of metal ore...

The stone like granite (in nature comes in more colors), reddish color can be of iron additive.

[roderico]

yes, you could make as many tests as you can to find any other bug, better use this release candidate which fixes again the maximum value of the histogram and has enable the speed optimizations

[kroman01]

whether to make a video histogram with metals and stones from firmwaare glcd_test7

[roderico]

these stones could be some kind of metal ore...
it looks like that it is working fine with the stones, i.e. when the flattening appears the saturation is indicated by highlighting the strength, so the current value for the saturation of channel Y might be a good estimate. I will limit the maximum in the histogram to be lower than the top axis and if there are no more bugs then version 2.0 can be compiled in a few days...

[kroman01]

video from the stone test

https://youtu.be/XKc1mxuo5Ks

https://youtu.be/L6ycZweUWgU

[roderico]

maybe you could do the tests with this version, I have reduced the latency of the display and changed back the labels in the histogram axis

[roderico]

ok very good, it is only necessary the scope view for the stones, it might be necessary to also set the saturation manually in the vdi to work properly...

[kroman01]

within 12 hours a stone will appear on the film, then RT2 will be placed on the XY input before U1 and broadcast on the second film
you only need the view of the oscilloscope

[roderico]

very nice videos, the histogram labels are better to be changed back to -180/180 and -90/90. There is still something wrong with the saturation level, I can't see it in the scope view when you used the screwdriver, it would have been also good to show the stones in the scope view to see where they saturate the vdi... what op-amp are you using for U1, the values of R4, R6 and the offset? it also depends on the value of RT2