只有背景灯亮，没有反应是什么情况？ 学习了，很有用，正在了解如何把模块发来的信息显示到lcd上 怎么说呢，我觉得你的这个硬件软件都全是错哎。。。我按照你的方法连接编写后，别说显示了，连分辨率都是错的。只有把分辨率那个口直接连低才能勉强显示一点点，有一点电阻都是不可以的 meng 发表于 2014-12-5 22:56 static/image/common/back.gif
只有背景灯亮，没有反应是什么情况？
我的也是这个情况? 请问,为什么我按照楼主的接线方法连接,显示屏只是亮了,但是没有任何的内容显示?用的是4位接线法.
谢谢....
RE: arduino学习笔记10 - 1602液晶实验
十进制应该不用后缀“D”吧？ 这个教程不错，一试就成功！只是我的是个蓝屏的。显示的时候，正面看不清，侧面才能看清楚。
allenyao 发表于 2015-4-18 13:57 static/image/common/back.gif
这个教程不错，一试就成功！
只是我的是个蓝屏的。显示的时候，正面看不清，侧面才能看清楚。
你接电阻了吗？要是接了还这样的话可能是电阻阻值不对。建议你换个电阻试试~ LCD可以用库驱动的。官方的库：LiquidCrystal。晒示例代码：/*
LiquidCrystal Library - Hello World
Demonstrates the use a 16x2 LCD display.The LiquidCrystal
library works with all LCD displays that are compatible with the
Hitachi HD44780 driver. There are many of them out there, and you
can usually tell them by the 16-pin interface.
This sketch prints "Hello World!" to the LCD
and shows the time.
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)
Library originally added 18 Apr 2008
by David A. Mellis
library modified 5 Jul 2009
by Limor Fried (http://www.ladyada.net)
example added 9 Jul 2009
by Tom Igoe
modified 22 Nov 2010
by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/LiquidCrystal
*/
// include the library code:
#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() {
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 1);
// print the number of seconds since reset:
lcd.print(millis() / 1000);
} 貌似没有成功，再试试