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I have a LCD1602 with a PCF8574 interface but I cannot seem to get it to work on my Bluepill.
I works fine on my ESP32 using the same code.
I have ran the I2C scanner and it is found. The one thing I did notice is that is does require 5V for it to work rather than 3.3V.
I works fine on my ESP32 using the same code.
I have ran the I2C scanner and it is found. The one thing I did notice is that is does require 5V for it to work rather than 3.3V.
