LCD not seen by i2c-scanner sketch

Other Hardware Displays
11

Add

  Serial.print("SDA:");Serial.println(SDA);
  Serial.print("SCL:");Serial.println(SCL);

before you do the scan in your i2c scanner and check if you are using the correct pins.

In general: the ESPs are 3.3 V devices, why don't you use a 3.3V LCD for an ESP?

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