LCD and 16f877a interface Help ? - Electronic Circuits Projects Diagrams Free

barryforever · 7th June 2008, 04:42 AM

Hello
I want to interface my 16f877a to LCd module HD44780
Im using a ccs compiler can some one send me a example program ..
so that i can try

aljamri · 7th June 2008, 07:15 AM

PIC Tutorial* Three - LCD Modules

bananasiong · 7th June 2008, 07:24 AM

He is not using assembly, this is Google first hit.

aljamri · 7th June 2008, 10:13 AM

oooooooooops. Soorrrrrrrrrrry.

It is happened that N.Goodwin's tutorial is where am I. and LCD tutorial what i am in. I've blown one LCD and the other one shows just all blocks of the second line, even the backligh is not there. checked connection many times, tried different MControllers, the result is the same. i'm stuck.

Thanks

**Nigel Goodwin** · 7th June 2008, 10:48 AM

Quote:

Originally Posted by aljamri

oooooooooops. Soorrrrrrrrrrry.

It is happened that N.Goodwin's tutorial is where am I. and LCD tutorial what i am in. I've blown one LCD and the other one shows just all blocks of the second line, even the backligh is not there. checked connection many times, tried different MControllers, the result is the same. i'm stuck.

You've got to do something pretty 'nasty' to kill an LCD module, what did you do?.

The 'single line of blocks' is what you get if the LCD isn't initialised at all, unplug the PIC, you should get exactly the same result.

How have you built it?, my tutorials give exact easy construction methods, which means it WILL work if you build it like that. If you've built it differently, then you've probably made an error somewhere.

seesy1234 · 7th June 2008, 11:05 AM

how if i wan using PIC16A84.how to connect the PIC to LCD.got any schematics if remote car detect obstacle then how i wan display word like "stop" and how to write programing in PIC.thx

aljamri · 7th June 2008, 12:49 PM

Hi Nigel,

Long not read for you.

Quote:

Originally Posted by Nigel Goodwin

You've got to do something pretty 'nasty' to kill an LCD module, what did you do?. .

I tried to make a nice work by soldering the LCD directly into the Board, the result is two or three shorts between the pins. ( Free experience does not long last ), but after the new module test, I'll make check that again, may be I am wrong.

Quote:

Originally Posted by Nigel Goodwin

The 'single line of blocks' is what you get if the LCD isn't initialised at all, unplug the PIC, you should get exactly the same result. .

Yes that’s what happened exactly. I have checked my connection twice and it is OK. The only difference is my unit has back light so two more pins ( 15 and 16 ) where I've connected +5v to 15 through 1k resistor and 16 direct to Gnd.

Here is the Module information: LED Display - LCD16x2BL

Quote:

Originally Posted by Nigel Goodwin

How have you built it?, my tutorials give exact easy construction methods, which means it WILL work if you build it like that. If you've built it differently, then you've probably made an error somewhere.

That's what came to my mind. At the begging I've connected it to 16F628A with your correction into Include and cofig . When it did not work, I used my only one 16F628 with the original setting but got the same results.

Thanks

barryforever · 8th June 2008, 05:50 AM

im using ccs compiler if some one could post me some of the tutorial and urls

Pommie · 8th June 2008, 06:15 AM

Did you look at the link posted by Bananasiong?

Mike.

futz · 8th June 2008, 06:36 AM

Quote:

Originally Posted by barryforever

im using ccs compiler if some one could post me some of the tutorial and urls

Geesh Bharath, just port the code off my site to CCS from PICC. It's really not that hard!

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7th June 2008, 04:42 AM	(permalink)
barryforever	LCD and 16f877a interface Help ? Hello I want to interface my 16f877a to LCd module HD44780 Im using a ccs compiler can some one send me a example program .. so that i can try __________________ have visit and be facinated about my projects www.easyhertz.com

7th June 2008, 07:15 AM	(permalink)
aljamri	PIC Tutorial* Three - LCD Modules __________________ Its what your friend in Your mind, what you in your friends mind

7th June 2008, 07:24 AM	(permalink)
bananasiong	He is not using assembly, this is Google first hit. __________________ Superman returns..

7th June 2008, 10:13 AM	(permalink)
aljamri	oooooooooops. Soorrrrrrrrrrry. It is happened that N.Goodwin's tutorial is where am I. and LCD tutorial what i am in. I've blown one LCD and the other one shows just all blocks of the second line, even the backligh is not there. checked connection many times, tried different MControllers, the result is the same. i'm stuck. Thanks __________________ Its what your friend in Your mind, what you in your friends mind

7th June 2008, 11:05 AM	(permalink)
seesy1234	how to show on LCD how if i wan using PIC16A84.how to connect the PIC to LCD.got any schematics if remote car detect obstacle then how i wan display word like "stop" and how to write programing in PIC.thx

8th June 2008, 05:50 AM	(permalink)
barryforever	im using ccs compiler if some one could post me some of the tutorial and urls __________________ have visit and be facinated about my projects www.easyhertz.com

8th June 2008, 06:15 AM	(permalink)
Pommie	Did you look at the link posted by Bananasiong? Mike.