I have the following code <code> void setup() { pinMode(blue, OUTPUT); pinMode(red, OUTPUT); pinMode(yellow, OUTPUT); pinMode(green, OUTPUT); digitalWrite(blue, HIGH); delay(2000); digitalWrite(blue, LOW); digitalWrite(red, HIGH); delay(2000); digitalWrite(red, LOW); digitalWrite(yellow…

thank you for quick response, yes Serial.begin(115200); is the first line after void setup() but I do not understand the world any more, while i got the garbage yesterday multiple times it is gone today. Didn’t change anything. Just powered of my iMAC, yesterday evening and powered on this morning…

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Garbage on serial monitor ESP32

sivar2311 October 3, 2025, 6:11am 2

Please use preformatted text when posting code or log lines to increase the readability!

The code snippet appears to be incomplete. Does your actual code also include the line Serial.begin(115200);?