Liquid Crystal Display, starterskit

Other Hardware Displays
1

Is there a way to let it work without the buttton.

what should I do with LCD pin 3 -> to wiper ?

The circuit:

  • LCD RS pin to digital pin 12
  • LCD Enable pin to digital pin 11
  • LCD D4 pin to digital pin 5
  • LCD D5 pin to digital pin 4
  • LCD D6 pin to digital pin 3
  • LCD D7 pin to digital pin 2
  • LCD R/W pin to ground
  • LCD VSS pin to ground
  • LCD VCC pin to 5V
  • 10K resistor:
  • ends to +5V and ground
  • wiper to LCD VO pin (pin 3)
2

Just connect contrast LCD_VO (pin 3) to GND. It will give you a readable display.
A 470R or 390R might give you a "better" contrast than your 0R piece of wire.

David.

3

thxs
works great !!