i just bought a arduino leonardo,i just tried to run hello word sketch on it but i was not able to see any thing on the lcd. all connection was done properly .

pin used on arduino- 12,11,5,4,3,2

lcd- winstar

pls help if anyone has any idea.

Views: 1312

Reply to This

Replies to This Discussion

i am also have the same trouble...

Have you got your contrast pot hooked up?  If it's hooked up correctly, you should see an effect when you turn it even if nothing is displayed.  If that's working, try resetting the Arduino a time or two.  If it still doesn't work, I'd suggest redoing rather than just checking your wiring.  Make sure you hook up all the grounds, and make sure they have a good connection. Also, it wouldn't hurt to post a picture, schematic, or listing of your pin connections (for example, are you sure pin 11 on the Arduino is hooked to the enable pin on your LCD?).

i tried what u suggest but i did not work , so i uploaded the image. if u find any mistake in wiring pls make me know.

 

Well, it looks like all of the pins go to the right places.  Does the screen light up when you power it on?  Do you see one line blacked out and the other not?  What happens when you sweep the pot from one extreme to the other?  Sometimes on my breadboard I have to wiggle the wires some to get a good connection, especially the grounds.

only the back light LED glow.there is no other change in display when i sweep the port.

I just tried my LCD to see what happens.  If the LCD and backlight are powered, the contrast pot doesn't do anything and the display is just blank (exactly what yours is doing).  I suppose that means that the Arduino isn't communicating with it properly.  Can you post your setup code?  Maybe try wiring it to different pins just to see what happens (it could be that, say, the ENABLE and RS are swapped).  Are the pins marked on the LCD board?

Please consider this:
http://www.johngineer.com/blog/?p=1224

[quote]For example, the lower 8 digital pins are no longer all a single port, and many of the pins, with the exception of the RX and TX lines, are moved around. Some of the PWM lines are in the same place, but are now connected to different ports and OC registers than they were before.[/quote]

which means many of the libraries will probably have to be rewritten.

RSS

Latest Activity

GarageLab posted blog posts
58 minutes ago
John price is now a member of GarageLab (arduino, electronics, robotics, hacking)
4 hours ago
GarageLab posted a blog post

3D Printing of Parameterized Speaker Enclosures

Despite what you would gather from looking at a mess of wires, carpet, and MDF in the back of a…See More
Tuesday
Profile IconMarsad Latief, Ralph H, kaisat and 3 more joined GarageLab (arduino, electronics, robotics, hacking)
Tuesday
GarageLab posted a blog post

Nixie Wearable Drone Camera: Fashionable Photographer

If Team Nixie has its way, drones might someday become the selfie addicts’ best friend. One of the…See More
Monday
Antonio Turner posted a status
Friday
GarageLab posted a blog post
Sep 26
Profile Iconkoenaryi and Don J Borchert joined GarageLab (arduino, electronics, robotics, hacking)
Sep 26
Joseph L. Tolbert , Jr is now a member of GarageLab (arduino, electronics, robotics, hacking)
Sep 25
GarageLab posted blog posts
Sep 25
GarageLab posted blog posts
Sep 23
Profile Iconvenkat satish and jerseys joined GarageLab (arduino, electronics, robotics, hacking)
Sep 22
GarageLab posted a blog post
Sep 22
GarageLab posted blog posts
Sep 19
Profile IconSheila Garland and petran747 . joined GarageLab (arduino, electronics, robotics, hacking)
Sep 18
GarageLab posted blog posts
Sep 17
Profile Iconleon crist, Tim Owen and Mishca de Costa joined GarageLab (arduino, electronics, robotics, hacking)
Sep 15
GarageLab posted a blog post

Arduino-Powered Turntables That Turn DJing Into Child’s Play

Per Holmquist has always had a finely tuned ear for music. “When I hear a song for the first time I…See More
Sep 15
GarageLab posted a blog post
Sep 12
Jean-Guillaume LALANNE posted a discussion

Smallest Arduino with BLE stack and push button integrated

Hi,I am a newbie in the maker world. I have bought a RFDUINO some month ago to play with.I did find…See More
Sep 12

© 2014   Created by Marcelo Rodrigues.

Badges  |  Report an Issue  |  Terms of Service