Hi all.
I started programming in processing recently. I'm on a project with Arduino and Processing. "PulseSensorAmpd_Processing_01" and "PulseSensorAmped_Arduino_01". The case is that I would like to know how I can draw an "X" on the panel when I click with the mouse. I attached a screenshot so you can see what I mean.
Sorry, but my English is not very good.
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