Hey y'all, I am new to arduino so sorry for any mistakes in terms of framing of question and the coding in general. I am looking to create a device that measures airflow, humidity, and particulate matter. I've blocked out the majority of the code so i can test parts in segments, but I'm running in…

Have you got this library installed? (under Manage Libraries search for Liquid Crystal I2C) [image]

Error compiling for board arduino uno - Airflow, Humidity, Particulate Matter Seonsors

invisiblesite November 12, 2021, 4:27am 18

This was it! thank you so much! I had installed LiquidCrystal and not LiquidCrystal I2C

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