My collegue and I are having hard time to understand what is happening. Basically we have a tapping device that work with Arduino and a pneumatic pump. The pump allows the tapping of two surfaces which perform triboelectric effect. We are connecting to those a logic analyzer (Seleae), to detect the signal and eventually quantifying the voltage produced. When we do it, we occour in this "shark finn" shape of the spikes, which pattern repeats all the time after n taps (see highlighted area in the picture). Do you have any idea why we are getting this pattern and no constant spikes?
Thank you so much in advance, really!
To understand the meristic character you should take/consider fins information.
It helps to understand about morphological variations of different sharks.
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