Question

我使用Qapass 1602A液晶显示屏进行arduino项目显示。在连接屏幕时，代码中的文字不会显示，背光是唯一可见的信息，可以知道它是否正常工作，谢谢！

#include <LiquidCrystal.h>

  // initialize the library with the numbers of the interface pins
  LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
 // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
  }

 void loop() {
   // Turn off the blinking cursor:
   lcd.noBlink();
   delay(3000);
   // Turn on the blinking cursor:
   lcd.blink();
  delay(3000);
 }

我的布线：

 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 A pin 15 to Power 3.3V
 LCD K pin 16 to GND
 LCD VSS pin 1 to GND
 LCD VDD pin 2 to Power 5V

更多信息：

  All the Pins on the LCD
    - VSS, VDD, VO, RS, RW, E, DO, D1, D2, D3, D4, D5, D6, D7, A, K

  Arduino:
    - Arduino UNO R3

Qapass 1602A液晶屏

0 个答案: