I have not had this issue in the past but for some reason I cannot connect an LCD with i2c adapter to any microcontroller. Here are a few shots to show LCD's recently working: [IMG_7640 copy] The above is of my test board. [IMG_9267 copy] This image is of an enclosure in a well house. Recent…

LCD not seen by i2c-scanner sketch

Koepel January 18, 2024, 10:44pm 3

If the display is the problem, try another display.
I would start with an Arduino Uno, connect it to the display and run a I2C Scanner sketch.

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