www.micro-examples.com

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

Welcome to the forum, and don't be afraid : I'm french too and my english is not that good too Embarassed

1/ LCD
like this for example :

Mycrimsoft · Joined: 19 May 2007 Posts: 3

Thanks you for these clue, really hapy to discovered this project, that's nice.
Good luck with your website.

But I've some question I see you alwas display on the LCD sreen :
ultrasonic sonar ranger, then the distance and then if OverRange or UnderRnge, I want to translate in french i think it situate from line 136 to lne 142,

L136: Lcd_Out(2, 8, "OverRange") ;
L142: Lcd_Out(2, 8, "UnderRnge") ;

I think I can manage by:

L136: Lcd_Out(2, 8, "Hors-Calibre: supérieur") ;
L142: Lcd_Out(2, 8, "Hors-Calibre: inférieur") ;

Then I always display on the LCD sreen :
ultrasonic sonar, to translate in french I thinks it's situated on line:

L91: Lcd_Out(1, 1, "UltraSonicRanger") ;

Can I managed by :

L91: Lcd_Out(1, 1, "Radar de recul ultrasonique") ;

?

Next question: What mean in french: circular buffer
I want to know if biffer mean: registre or mémoire?

Then I download MicroC démo but I dont know Where my builded .hex file gone? well have you some documentation on it?

Mycrimsoft · Joined: 19 May 2007 Posts: 3

Sorry for the question, but I've a, query for you.

Can you compile an .hex file for me with french translate of the lcd output?

The line are:

L91 Lcd_Out(1, 1, "UltraSonicRanger") ;

By

L91 Lcd_Out(1, 1, "RadarStationemen") ;

Then:

L138 Lcd_Out(2, 8, "OverRange") ;

By:

L138 Lcd_Out(2, 8, "D>calibre") ;

And:

L142: Lcd_Out(2, 8, "UnderRnge") ;

By

L142: Lcd_Out(2, 8, "D<calibre") ;

Thanks.

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

hi all, i going to do this project with some improvement of function, can i have a help?
in your website, just mention the T/R part circuit then how about in PIC16F877A part? what should i do at that part, can i have some procedure or step to to it and compile the program and how to store into the PIC16F877A?
i need new function is, additional tunning angle pointing to the height of the object and send the angle(in degree) inside the microcontroler and do the tangential calculation so that i can get the output of the height of the object. (Exp: for 60 degree, tan 60 = height / distance)
can profetional people give me a help?
thanks

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

no one can help me?
i attach the pic that i need this function to measure angle, anyone know how to do the circuit inside the pic ?
help me pls....

Image Hosting[/img]

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

Hi,

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

thank you for your help!!
and do u know about angle meter circuit?

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

the most simple angle meter would be a 4K7 potentiometer with center on the hinge, connected to an ADC input of the PIC.
a lookup table and a simple linearisation would give directly the tangent of the angle.
_________________
BrunoG, Administrator

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

sorry to disturb u again, if i connect the 4k7 potentiometer to RA0, then my code can use or not?
and need to add anything only can get the 0-90degree angle then only do the calculation?
and how to connect the 4k7 potentiometer to the pic?
if i use the 1st line of LCD display the distance and use 2nd line display height can?

my code:

unsigned integer angle;
unsigned long result;
unsigned long Height;

void main()
{
ADCON0 = 0;

angle = Adc_Read(0);
result = (sinE3(angle)/1000)/(cosE3(angle)/1000);
Height = result*cm;

Lcd_Out(2, 1, "Height=") ;
ByteToStr(Height, str) ; // convert to string
Lcd_Out(2,8, str) ; // print string

BrunoG · Site Admin Joined: 22 Nov 2005 Posts: 636

yes you will have to convert the voltage into an angle, maybe a calibration procedure will be needed. use a linear potentiometer to get a linear scale, connect it to Gnd and +V with cursor point connected to the PIC analog input you use.
do not divide intermediate results by 1000 : you will loose accuracy.
_________________
BrunoG, Administrator

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

for the potentiometer, if the variation of volt is from 0-5v, when it send into the ADC port of the pic, what the pic detect?in digital form?how to calculate from volt to digital?

vincentspm · Joined: 09 Jun 2007 Posts: 12 Location: malaysia

need helps...i just construct whole circuit and try the burning program but using other software load and burn in pic16f877a, is it problem with using other software??
i copy whole LCD code from microC_manual and change LCDPORT to PORTB then connect same as the circuit in the manual but y cannot work at all?just 1st line LCD screen shows all square box only...
so is that any problem or wrong i do??