Questions:

I am using a UNO R4 WIFI, and It seems that there is a wired icon in front of the println data in the serial monitor:

Weixin Image_20241028135702.jpg

WeChat_20241028135717.mp4

After I run the sketch in p5, the data on Canvas seems to respond only once every time I run the sketch.

WeChat_20241028135711.mp4