PATH A · NO LIBRARY
Keep your firmware as it is.
void loop() {
Serial.printf("temp=%.2f hum=%.1f\n", readTemp(), readHum());
delay(20);
}
KymoStudio also reads Teleplot (>temp:23.5) and CSV columns (23.5,41). Each name becomes a signal with its own curve label.
Good to know: text lines carry no device time, so reception time applies.