The posted pdf to the manual shows a little bit of the device. But here's another larger and more advanced device (linked in the article). It is doing the same

The posted pdf to the manual shows a little bit of the device. But here's another larger and more advanced device (linked in the article). It is doing the same but with an more elaborated output visualization. https://www.youtube.com/watch?v=bt3ecnqdUCo https://www.youtube.com/watch?v=bt3ecnqdUCo You can clearly see the output in the video.