how to interface lcd with arduino leonardo?i follow the data and program given in the arduino software many times but no output come..please help anyone to me...

Views: 262

Replies to This Discussion

First the basics, check what kind of LCD display they expect in the SW and make sure yours is compatible.  If it is compatible, then verify it has power.

Does your screen do anything at all?  Flash?  Light up?  Lines?  Blocks?  The Arduino LiquidCrystal library is for LCDs based on the Hitachi HD44780 chipset, but they have libraries for many other common chipsets on the LCD Playground page.  If your LCD lights up or displays garbage you probably have a different chipset.  More information about your device and what it's doing would be helpful to get more help!

ya in my LCD BACKGROUND LIGHTS ON  and simply black colour blocks come.i use 16*2 JHD 162A  .this LCD is compatible with HD44780 ? 

Hi, I think this thread might help you.  I didn't read it, but it sounds like a similar problem.

http://arduino.cc/forum/index.php/topic,26527.0.html

If you get lights and blocks then the LCD is working and not getting any data.  It looks like the JHD uses the HD44780 chipset, so it should work with the LiquidCrystal library.  I'd check your wiring, or redo it from scratch.  Make sure all of your grounds are grounded, and make sure your contrast pot is hooked up correctly (5V on one pin, ground on the other, and the middle pin goes to the LCD).  Make sure that the R/W pin is grounded.  Make sure that in your code you initialize the LiquidCrystal library with the correct pins (if you look at the LiquidCrystal constructor, you'll use the first option with rs, enable, and d4, d5, d6, and d7); tell the library which pin on the Arduino is connected to each of the LCD pins.  After that, be sure you call LCD.begin(16, 2).  Also, for my LCD sometimes I have to reset the Arduino once or twice to get it to work.

RSS

Latest Activity

liuyi is now a member of GarageLab (arduino, electronics, robotics, hacking)
Wednesday
yanfan li posted a discussion

Last Chance to Grab the New Robot Starter Kit --- Fireduino

Only a week left to grab the New Smart Robot Kit --- Fireduino. Only available on Kickstarter for…See More
Tuesday
Profile Iconvivid, lihua, JorgeLuisMolinaPrudot and 2 more joined GarageLab (arduino, electronics, robotics, hacking)
Tuesday
Marcelo Rodrigues posted a blog post
Tuesday
Marco and sravan kml are now friends
Jul 14
Don Girvin left a comment for daniel konold
"How about inside, outside thermometers,with humidity reporting for house and external facilities.…"
Jul 12
Profile IconRaj Deshmukh and yanfan li joined GarageLab (arduino, electronics, robotics, hacking)
Jul 12
Profile IconJaume Soler Perxes, Robert L. Coble, Matteo Grube and 5 more joined GarageLab (arduino, electronics, robotics, hacking)
Jul 8
Marcelo Rodrigues posted blog posts
Jul 1
Jesus Burnes is now a member of GarageLab (arduino, electronics, robotics, hacking)
Jul 1
Marcelo Rodrigues posted a blog post

3D Printing Hair!

Cilia–the microscopic basic hair-like structure that covers all mammalian cells–has numerous…See More
Jun 29
Profile Iconolivier Sbzngu, Zazu and Nelson da Gama joined GarageLab (arduino, electronics, robotics, hacking)
Jun 29
Marcelo Rodrigues posted a blog post

Boston Dynamics presents new robots

Boston Dynamics, one of the companies who develop the most advances robots in the world published…See More
Jun 27
sujeeth senthilvel is now a member of GarageLab (arduino, electronics, robotics, hacking)
Jun 24
Alan commented on Kevin Krumwiede's group Aquaponics
"Joined this group as my main interest in aquaponics much more than electronics !!! However I not…"
Jun 15
Alan joined Kevin Krumwiede's group
Thumbnail

Aquaponics

Ancient agriculture and aquaculture techniques meet modern technology! Learn how to grow fresh…See More
Jun 15
Profile IconKambiz Hadzad and Kasim Rafiq joined GarageLab (arduino, electronics, robotics, hacking)
Jun 15
Marcelo Rodrigues posted a blog post
Jun 14
Michael Williams updated their profile
Jun 13
Joe Mallat is now a member of GarageLab (arduino, electronics, robotics, hacking)
Jun 12

© 2016   Created by Marcelo Rodrigues.   Powered by

Badges  |  Report an Issue  |  Terms of Service