what's wrong with my LCD JHD 162A

Other Hardware Displays
1

I'm using the JHD 162A jhd 162a - Google Search with arduino Due.and the library is LiquidCrystal Library.then run the example codes ,hello world.but it just display some blocks ,not words.so ,what's wrong with it ?thanks

2

plantpark:
I'm using the JHD 162A jhd 162a - Google Search with arduino Due.and the library is LiquidCrystal Library.then run the example codes ,hello world.but it just display some blocks ,not words.so ,what's wrong with it ?thanks

You are getting a single row of blocks because your LCD controller is not properly initialized. Have you tried searching for information about this problem?

Don

3

I have tried that for a long time .but haven't gotten very good solve~~

4

You haven't tried very hard.

A single row of blocks indicates that your LCD controller has not been correctly initialized. This is almost always due to improper connections or improper programming.

We will need to see a photograph that unambiguously shows all of the connections between your Arduino and your LCD. We will also need to see a copy/paste version of the actual code that you are using, not a link to the code that you think you are using.

Don