alarm house 16f877 ? - Page 3 - Electronic Circuits Projects Diagrams Free

be80be · 14th July 2009, 04:53 PM

This is what get's me Op ask for help with this but no code has been posted and they said they tried it with a 16f84 and no go. If you look at the circuit for 16f84 it has a 4 mhz crystal so if you left the 20mhz on the board it wouldn't work the start up delays would be to fast for the lcd.

seti75 · 14th July 2009, 04:58 PM

c4 and c5 removed, that does not function.

the program of this alarm ----->

Free - Envoyez vos documents

is somebody has a simple program (leds) for tested this 16f877 and knowledge s' it is good?

I specify once again that several programs were tested with this 16f877 and no n' functioned!

be80be · 14th July 2009, 05:06 PM

I can't read that maybe if you want this fix you would take time to post it so we can help you. a hex is not much good if some thing goes wrong you need the code

seti75 · 14th July 2009, 06:35 PM

One do not understand .

If you look at my post since the debut, kept silent will see that it is an assembly (editing) of electronique practice ( alarm ) with one 16f877 and a quartz of 20mhz.
My probléme it is to know if my 16f877 is good....?

blueroomelectronics · 14th July 2009, 06:44 PM

Try flashing an LED. I posted a link to a simple LED flasher for the 16F877.

be80be · 14th July 2009, 06:58 PM

Bill they want a hex that blinks. yes you put the thing together so you can call it

Quote:

kept silent will see that it is an assembly (editing)

Still need the source code not a hex I can build them and write them
It's hard to help you because we can't see what your doing and your writing is worst then mine

seti75 · 16th July 2009, 04:16 PM

my lcd is good with the program of this page

PIC to LCD interface

test my lcd -->
Imageshack - hellw

it is necessary that I find the same program test for a 16f877. to know if the 16f877 really died

Chippie · 16th July 2009, 04:26 PM

Quote:

Originally Posted by seti75

it is necessary that I find the same program test for a 16f877. to know if the 16f877 really died

Do what Blueroom electronics suggested...flash an led....You can write the code so that you could test each pin individually or sequentially...

;*** WDT reset toggles RB0
list p=16F877A
include <p16F877A.inc>
__CONFIG 0x3F7D
org 0
bsf STATUS, RP0
movlw b'00001110'
movwf OPTION_REG
bcf TRISB, 0
bcf STATUS, RP0
movlw 1
xorwf PORTB, f
sleep
end

BRE, Hope you dont mind me posting the code...

seti75 · 16th July 2009, 04:54 PM

I do not include/understand ? with which diagram ? (schématic)

thank

Chippie · 16th July 2009, 05:07 PM

Follow the link....schema is at the bottom of the page...

http://www.blueroomelectronics.com/d...%20Project.pdf

seti75 · 16th July 2009, 05:13 PM

thank Chippie

compilation is good ?
http://www.monsterup.com/upload/124776063671.jpg

Chippie · 16th July 2009, 05:15 PM

If you program the hex file into the 877, and wire up to the schema it should blink the led....

seti75 · 16th July 2009, 05:48 PM

I do not know only c' is vpp, pgd, pgc I have just finished l' test without connected vpp, pgd, and pgc the led remains extinct, I believe that the 16f877 died!

blueroomelectronics · 16th July 2009, 05:50 PM

That's why it's handy to keep a spare.

seti75 · 16th July 2009, 07:24 PM

test 16f877 flash led with another program

my 16f877 --->

YouTube - clig 16f877

I do not include/understand any more ! j" stays on my peak had died…

.it is ok ?

why it does not function with the lcd 2x16 ?

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14th July 2009, 04:53 PM	#31
be80be	This is what get's me Op ask for help with this but no code has been posted and they said they tried it with a 16f84 and no go. If you look at the circuit for 16f84 it has a 4 mhz crystal so if you left the 20mhz on the board it wouldn't work the start up delays would be to fast for the lcd. __________________ Burt http://mybe80be.com http://stores.shop.ebay.com/mybe80be__W0QQ_armrsZ1 Last edited by be80be; 14th July 2009 at 04:55 PM.

14th July 2009, 04:58 PM	#32
seti75	c4 and c5 removed, that does not function. the program of this alarm -----> Free - Envoyez vos documents is somebody has a simple program (leds) for tested this 16f877 and knowledge s' it is good? I specify once again that several programs were tested with this 16f877 and no n' functioned! __________________ paris (france)

14th July 2009, 05:06 PM	#33
be80be	I can't read that maybe if you want this fix you would take time to post it so we can help you. a hex is not much good if some thing goes wrong you need the code __________________ Burt http://mybe80be.com http://stores.shop.ebay.com/mybe80be__W0QQ_armrsZ1

14th July 2009, 06:35 PM	#34
seti75	One do not understand . If you look at my post since the debut, kept silent will see that it is an assembly (editing) of electronique practice ( alarm ) with one 16f877 and a quartz of 20mhz. My probléme it is to know if my 16f877 is good....? __________________ paris (france) Last edited by seti75; 14th July 2009 at 06:37 PM.

14th July 2009, 06:44 PM	#35
blueroomelectronics	Try flashing an LED. I posted a link to a simple LED flasher for the 16F877. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

16th July 2009, 04:16 PM	#37
seti75	my lcd is good with the program of this page PIC to LCD interface test my lcd --> Imageshack - hellw it is necessary that I find the same program test for a 16f877. to know if the 16f877 really died __________________ paris (france)

16th July 2009, 04:54 PM	#39
seti75	I do not include/understand ? with which diagram ? (schématic) thank __________________ paris (france) Last edited by seti75; 16th July 2009 at 04:55 PM.

16th July 2009, 05:07 PM	#40
Chippie	Follow the link....schema is at the bottom of the page... http://www.blueroomelectronics.com/d...%20Project.pdf __________________ Eccentric millionaire financed by 'er indoors

16th July 2009, 05:13 PM	#41
seti75	thank Chippie compilation is good ? http://www.monsterup.com/upload/124776063671.jpg __________________ paris (france)

16th July 2009, 05:15 PM	#42
Chippie	If you program the hex file into the 877, and wire up to the schema it should blink the led.... __________________ Eccentric millionaire financed by 'er indoors

16th July 2009, 05:48 PM	#43
seti75	I do not know only c' is vpp, pgd, pgc I have just finished l' test without connected vpp, pgd, and pgc the led remains extinct, I believe that the 16f877 died! __________________ paris (france)

16th July 2009, 05:50 PM	#44
blueroomelectronics	That's why it's handy to keep a spare. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

16th July 2009, 07:24 PM	#45
seti75	test 16f877 flash led with another program my 16f877 ---> YouTube - clig 16f877 I do not include/understand any more ! j" stays on my peak had died… .it is ok ? why it does not function with the lcd 2x16 ? __________________ paris (france)