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: 259

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

Profile IconMarvin Wright and chaudhari vipin vasudev joined GarageLab (arduino, electronics, robotics, hacking)
15 hours ago
Marcelo Rodrigues replied to Peter Davies's discussion Anyone got stock of Garagelabs automation board
"Peter, I will talk them to check if they can produce more units and make available on their…"
yesterday
Brian B. Feaster commented on GarageLab's blog post Information Trade Between Cars by Wi-Fi
"I like this idea of information trade between cars by the WI-Fi . This would contribute in reducing…"
yesterday
Peter Davies replied to Peter Davies's discussion Anyone got stock of Garagelabs automation board
"Hi Marcello I have bought all of Seeeds stock in two purchases - 8 units in all.  When I asked…"
Tuesday
Profile Icontarun patel, Enrique S. Perez Rodriguez, K Fiore and 5 more joined GarageLab (arduino, electronics, robotics, hacking)
Monday
Marcelo Rodrigues replied to Peter Davies's discussion Anyone got stock of Garagelabs automation board
"Peter, You can buy them on…"
Monday
Rob Lambert joined Marcelo Rodrigues's group
Thumbnail

Arduino

Group for the Arduino communitySee More
Saturday
Sardar Tamoor commented on Thulana Vimukthi's blog post GPS GUIDED AUTONOMOUS ROBOT
"can you plz help me on my project !!! its basically obstacle avoidance in dynamic environment and…"
Apr 27
Sardar Tamoor commented on Thulana Vimukthi's blog post GPS GUIDED AUTONOMOUS ROBOT
"can you plz help me on my project !!! its basically obstacle avoidance in dynamic environment and…"
Apr 27
Sardar Tamoor is now a member of GarageLab (arduino, electronics, robotics, hacking)
Apr 26
Peter Davies posted a discussion

Anyone got stock of Garagelabs automation board

HiI have a requirement for 11 automation boards and have been able to source 8,  does anyone have a…See More
Apr 25
Profile IconGuilherme Barros, Rob Lambert and kevin parr joined GarageLab (arduino, electronics, robotics, hacking)
Apr 22
Tino Pascuzzi left a comment for stephen smith
"Hello, my name is Tino Pascuzzi and I'm the owner of The Sanctuary Haunted Attraction.  I…"
Apr 14
Tino Pascuzzi left a comment for Aaron Thiedt
"Hello, my name is Tino Pascuzzi and I'm the owner of The Sanctuary Haunted Attraction.  I…"
Apr 14
Tino Pascuzzi left a comment for Paul Ellison
"Hello, my name is Tino Pascuzzi and I'm the owner of The Sanctuary Haunted Attraction.  I…"
Apr 14
Tino Pascuzzi left a comment for Gary
"Hello, my name is Tino Pascuzzi and I'm the owner of The Sanctuary Haunted Attraction.  I…"
Apr 14
Tino Pascuzzi left a comment for Amauri
"Hello, my name is Tino Pascuzzi and I'm the owner of The Sanctuary Haunted Attraction.  I…"
Apr 14
Mark Mendelsihn is now a member of GarageLab (arduino, electronics, robotics, hacking)
Apr 14
Tino Pascuzzi updated their profile
Apr 13
ade ljathanna is now a member of GarageLab (arduino, electronics, robotics, hacking)
Apr 12

© 2016   Created by Marcelo Rodrigues.   Powered by

Badges  |  Report an Issue  |  Terms of Service