ESP8266 No debug on serial monitor


Following instructions from this video

Project works because I can turn on/off an LED on pin 13, but, I see no debug on the serial monitor.

Using a Huzzah ESP8266 breakout board with this code

#define CAYENNE_PRINT Serial

#include <CayenneMQTTESP8266.h>

char ssid[] = “…”;
char password[] = “…”;
char username[] = “a…c”;
char mqtt_password[] = “5…0”;
char client_id[] = “5…e”;

void setup() {
Cayenne.begin(username, mqtt_password, client_id, ssid, password);
digitalWrite(13, LOW);

void loop() {

digitalWrite(13, !getValue.asInt());


Hello Sir,
for a serial debug, you have to use the command: Serial.begin(9600); with any speed related to your needs!


Thank you, that did the trick!

Forgot that this is debugging 101!


Should I consider the theme as closed ? :slight_smile:


Yup, thanks