my project works in Protous and don't work on Board

[bas_90]

my project works in Protous and don't work on breadboard

"Code + Des. + Hex. file" in Attachments

Help Me Plz Cuz I'm Really Tired

 

[jayanth.devarayanadurga]

Try this it will work. Have you pulled MCLR high? Have you connected LCD D0-D4 pins to ground?

 

[bas_90]

i will try now , thnx alot

- - - Updated - - -

LCD Don't Show anything

how can test LCD if it Okay or not ?!

thnx ..

 

[jayanth.devarayanadurga]

Post your circuit.

 

[nagkiller]

Try to put a trimpot or potentiometer into LCD VEE power rail (like example).

Where the crystal osc??? EditIt should be as close to mcu)
Where the MCLR pull up???
Check all connections!!!

Edit: Put too a capacitor 100nF decouple (It should be as close to mcu VCC power rail)

 

[DR.boy]

seems you have wiring issues, you have to check all connections (like what nagkiller told u)

try his schematic .

 

[Electronics_chaitanya]

hello


I suggest you to place 33pF capacitors to both lead of crystal.if you don't get what am i telling then try to googling...let me expalinn you in steps


(1) Check power supply of LCd as well as also of uC. it shold be 5V
(2) Check clock circuits i dont know how to check crystal but mainly is is not damaged....you can check wiring of it and by physically damaged signs.
(3) Check connections of LCd and uC.
(4) Check reset circuit
(5) It is necessary to place some delay in programming while interfacing LCD so just check your software....
(5) If everything is a ok then replace LCD

 

[jayanth.devarayanadurga]

Here is a new code. Try it. It is compiled for 8 MHz Fosc. What is your crystal frequency?

 

[bas_90]

Hello , it's working Okay now ))) thnx all ^_^

but now i have a small problem ... when it working in 5v .. Lighting of words in pale

after change 5v to Battery (8.5v) .. It's Perfect

now i complete my work in 8.5v or what ?!

 

[jayanth.devarayanadurga]

Don't give more than 5V to the circuit. Don't charge the battery onboard. Charge it somewhere else and use it in your board. Try adjusting contrast of LCD.

 

[bas_90]

@jayanth .. I tried, but to no avail ... what can i do now ?!

 

[jayanth.devarayanadurga]

Change you LCD.

 

[bas_90]

but it's working fine ...

before last test i'm changed the Res. connected to PIN1(uC) to 33k not 10k and Crystal to 4MHz not 20 MHz

probably this make a pale words in LCD or what ?!

 

[Electronics_chaitanya]

if you are using 7805 regulator then you must give more then five volt in input.....for example 6V....