On displays that I have used, a 1K resistor (to ground) gives nice contrast (in lieu of 220 Ohms).
The LCD R/W pin (LCD pin 5) should go to ground.
On displays that I have used, a 1K resistor (to ground) gives nice contrast (in lieu of 220 Ohms).
The LCD R/W pin (LCD pin 5) should go to ground.