Discussion in "Project Doubts" started by    Chinmay Das    Mar 10, 2009.
Tue Mar 10 2009, 06:33 PM
#1
hello ajay sir,

thanking you for ur useful advices, help me to solve the prob of coding errors. Now i require ur help.
i m not able to see the output on the lcd , i m getting only boxes in first line and the second line is empty .
i hv checked all d connections of uC ckt. de r perfect according to the ckt diagram.
i hv tested the ckt with n widout installing d uC... n got the same result. i hv also chek d coding part .it seems der is no prob 4m coding side...

so please help me in that part.






http://www.8051projects.net/files/public/1236709942_14263_FT0_lcd3.jpg]
[/link]





[ Edited Wed Mar 10 2010, 07:06 PM ]
 swarnasugandh like this.
Tue Mar 10 2009, 08:04 PM
#2
here are the codings of LCD initialization

Tue Mar 10 2009, 09:33 PM
#3
try increasing the delay in lcddelay routine. I am sure that will solve your problem.

[Edit]
I just checked your images, you forgot to put controller in circuit.

NOTE: Do check vcc pins to make sure there is 5V


[ Edited Tue Mar 10 2009, 09:43 PM ]
Wed Mar 11 2009, 01:29 AM
#4


try increasing the delay in lcddelay routine. I am sure that will solve your problem.

[Edit]
I just checked your images, you forgot to put controller in circuit.

NOTE: Do check vcc pins to make sure there is 5V

Ajay




Sir i hv checkd both d vcc pt of uC and LCD, i found itz below 5V. So i modified d power supply section n add another 5 V only 4 uC ckt to maintain the voltage drop. And also i hv designed the ckt as per the ckt diagram (ckt images r given below). i m wondering abt the controller in d ckt. cud u pls tell exactly at which pt i miss d controller?

thank you sir 4 ur guide lines....





[ Edited Wed Mar 11 2009, 03:35 PM ]
Wed Mar 11 2009, 03:57 PM
#5


try increasing the delay in lcddelay routine. I am sure that will solve your problem.

[Edit]
I just checked your images, you forgot to put controller in circuit.

NOTE: Do check vcc pins to make sure there is 5V

Ajay




Sir as u told me , i increas d delay in lcddelay 4m 50 to 250. also give const 5v DC supply to uC ckt to maintain the voltage drop. bt i still hv d same problem. i chked d codings thoroughly, bt find no errors. i dnt know hw 2 over com dis prob ... sir pls help me out. i m also uploading codes 4 ur reference.






Wed Mar 11 2009, 06:16 PM
#6


BTW have you tried adjusting the contrast of LCD ?



Arun
Wed Mar 11 2009, 07:04 PM
#7
well sometimes faulty LCD also behave like this
Thu Mar 12 2009, 02:26 AM
#8
hello Arun sir n TPS

ajay sir ask abt the controler , if u give a close look 2 the pix i post b4 i hv used 10k VR 4 adjusting the LCD contrast. Arun Sir i hv chked the resistance btween VR, whn v hv resitsnce in between 6-10K the Lcd contrast is visible.

And TPS , i hv also guessed dat my LCD may b faulty , so i pluged 4 other NEW LCD dat i hv bought 4 other projects. n got d same single line box as result. bt dos LCDs r working perfectly wid other project.

so pls sir tell me wht r the trouble shootings 4 LCD u hv faced duringg u r projects.
so dat i can analysis dem 2 get d solution. or get me any solution on it. thk u

n Happy holi. !dance


[ Edited Thu Mar 12 2009, 08:44 AM ]
Thu Mar 12 2009, 08:45 AM
#9
pls somone help me..........
Thu Mar 12 2009, 08:45 AM
#10
I smell a different problem here..
can you tell me what is LCDDATA is defined?

Get Social

Information

Powered by e107 Forum System

Conversation

Fri Sep 29 2017, 02:45 AM
Maaz
i am doing the same project on verilog please contact me [email protected]
Wed Sep 20 2017, 12:36 AM
Ted
In a missing pulse detector using a 555 timer connected as a monostable vibrator with a PNP transistor,how does the positve input pulse turn on the PNP transistor?
Sun Sep 03 2017, 02:29 PM
martymarty
How do I connect an <NOKIA 1100 LCD > to an atmega328P ?
poojab51296
Sun Aug 20 2017, 10:23 AM
i am intending to interface sd card with STM32F4 and want to write a file in sd card using SPI protocol but using HAL only. Can anyone help me PLEASE!!!!
poojab51296
Sun Aug 20 2017, 10:22 AM
hello
rawat742
Fri Aug 18 2017, 11:37 AM
hi @ angel patel i will attach a file i hope it will be helpfull for you
ExperimenterUK
Mon Aug 14 2017, 09:57 PM
@ angel patel... just log in and post your problem
Mon Aug 14 2017, 01:45 PM
angel patel
hey any one help to make the led scrolling display
desuza6
Sat Jul 29 2017, 07:09 AM
I see the code for step motor h l 298 to rotate 45 degree, but all delay time, if I want to input sensor to h the pulses to stepmotor
rammichael
Thu Jul 27 2017, 12:05 PM
okay fine

Downloads

Comments

lohithaSrinivas
Mon Oct 23 2017, 06:51 AM
aalootazyloo
Sat Oct 21 2017, 08:07 AM
bvdb
Wed Oct 18 2017, 01:45 AM
TinkeringJoe
Sun Oct 15 2017, 02:23 AM
Tubai96
Thu Oct 12 2017, 05:30 PM
roberttku
Thu Oct 12 2017, 08:02 AM
Bdavid.sam
Mon Oct 09 2017, 02:23 PM
SUNSHINE
Thu Oct 05 2017, 03:54 AM

Online

Guests: 72, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 37904
Newest member: lohithaSrinivas
Forum Activity
bvdb Avatar
Posted By bvdb
Wed Oct 18 2017, 01:50 AM
I purchased the RKitL51 8051 C compiler from Raiso...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Oct 16 2017, 11:44 PM
That looks complicated.Is 8051_BLK a standard 80...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Oct 15 2017, 07:29 PM
According to this, gmail should support POP3.https...
Help Avatar
Posted By Help
Sun Oct 15 2017, 03:21 AM
AT+POP3READ=? +POP3READ: (1-1460) OK AT+POP3READ=...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Oct 14 2017, 08:06 PM
What happens if you ask for the full email ieAT+PO...
Help Avatar
Posted By Help
Sat Oct 14 2017, 02:28 AM
Dear all, AT // OK // 3.1 Bearer profile // Conf...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Oct 12 2017, 01:04 AM
I don't think the 0804 works as it should in Prote...
Bdavid.sam Avatar
Posted By Bdavid.sam
Wed Oct 11 2017, 01:54 AM
Are you simulating in Orcad ?Please post your cod...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Oct 10 2017, 09:43 PM
Are you simulating in Orcad ?Please post your cod...
Bdavid.sam Avatar
Posted By Bdavid.sam
Mon Oct 09 2017, 02:38 PM
Hello, This might be a beginner’s mistake but I a...