HD44780 Character LCD: problem with I2C and ST NUCLEO-F401RE

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•

Frida
Have you tried:
```
require("HD44780").connectI2C(I2C1, 0x3F);
```
it seems you have a PCF8574A which have
address 0x7E, shifted right it is 0x3F

•

Blizzard in reply to @Frida

Hi Frida,
many thanks for the suggestion!
Using the instruction you have suggested the "Hello World!" example works
properly using either "direct connection" or pull up resistors between signal lines.

Regards

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