Save Arduino input in array, and THEN plot it

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Using two different readStringUntil "characters"

Now that it seems all’s been sorted out, how about some optimization? The range [-10 to 10] is so small (5-bit) that it comfortably fits in a byte (8-bit). So, rather than send those 2 small values as TSV, w/ lotsa extra separator characters, we can simply send 2 bytes only using Serial.write(): https://www.Arduino.cc/reference/en/language/functions/communication/serial/write/ We just need to create a char array of length = 2: signed char xy[2]; #define BAUDS 115200 #define DELAY 10 #define…