Hello,
It still does not work. See No text. Both KS0070B (LCD 16x2) and HD44780 (LCD 40x4).
2 comes with 40x4 LCD cursor, the blinking cursor right.
Pull-ups resistors is 4.7 K.
I use PCF8574P. A0, A1 and A2 to GND as shown in the diagram. 0x20
EA W404B-NLW LCD 40x4 (HD44780)
