Pic 16f676 Microcontroller Voltmeter

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pic16f676 voltmeter,pic voltmeter 7 segment,Pic16f676 adc c code

in this article I will discuss the Pic 16f676 Microcontroller Voltmeter and pic16f676 programming . In the previous article I have discussed the interface of Ultrasonic sensor and the Raspberry Pi using the Python language. So this post will be oriented around how to use Pic 16f676 Microcontroller as a Voltmeter and understanding about Pic Microcontroller programming

Pic 16f676 Microcontroller Voltmeter:

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After reading this post you will be able to understand the basics of the circuit Pic 16f676 Microcontroller Voltmeter and also you will learn about the important c code for pic voltmeter 7 segment So sit back keep reading and enjoy learning.

Equipment Required of project :

we are using these components

common andoe 7segment displsy
pic microcontroller 16f676
14 pin base
resistor 10k,10k veriable resistors
7805 for voltage regulator
100uf .01uf capcitor
led
diode
pic kit 2 for programming

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PIC Microcontroller Programming:

here is the steps of PIC Microcontroller Programming

first open the pic ccs s compiler software
select the project options and set the project options and save
Select a microcontroller for your project. Here ‘PIC16f676’ microcontroller is selected.
Select the compiler and path location for your project. Here ‘CCS C compiler’ is selected for the PIC microcontroller, then select the ‘browse’ option from the project wired window to select the ‘ccsloader’ in the PICC folder from the program files. A folder with the name ‘source group’ is created in the ‘target’ folder.
Give a name to the project and click on ‘NEXT’ button to save the project. A folder with the name ‘source group’ is created in the ‘target’ folder.. Click on the ‘file’ menu on the menu bar. Select ‘new file’ from the drop- down menu.

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the voltmeter

microcontroller for beginners

Pic16f676 adc c code:

here is the code of reading adc in c language and it is compile in pic ccs c compiler

SET_ADC_CHANNEL(3); // for(i=0;i<2;i++) // { // delay_ms(1); mux(); mux();mux();mux(); mux();mux(); result=read_adc(); //} val2=result; // value = (int8) (read_adc() * 500)/1023; //val2 = read_adc (); value = (val2* 5000)/1023;

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pic voltmeter 7 segment:

3 digit 7 segment with pic 16f676 microcontroller. this is a very simple pic microcontroller voltmeter using 7 segment it can measure up to 99.9 voltage

here is the circuit of 7 segment voltmeter

pic16f676 voltmeter code:

in this code we are using pic ccs c compiler and read analog signal and convert in to digital

here is the full code of pic16f676 voltmeter

#include <16f676.h>
#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC                 //Internal RC Osc, no CLKOUT
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES NOBROWNOUT               //No brownout reset
#FUSES PUT
#device ADC=10
#use delay(INT=4Mhz)
#define aon    output_LOW(PIN_C0);
#define aof    output_HIGH (PIN_C0);
#define bon    output_LOW(PIN_C1);
#define bof    output_HIGH (PIN_C1);
#define con    output_LOW(PIN_C2);
#define cof    output_HIGH (PIN_C2);
#define don    output_LOW(PIN_C3);
#define dof    output_HIGH (PIN_C3);
#define eon    output_LOW(PIN_C4);
#define eof    output_HIGH (PIN_C4);
#define fon    output_LOW(PIN_C5);
#define fof    output_HIGH (PIN_C5);
#define gon    output_LOW(PIN_A2);
#define gof    output_HIGH (PIN_A2);
#define d1_of    output_LOW(PIN_A1);
#define d1_on    output_HIGH (PIN_A1);
#define d2_of    output_LOW(PIN_A0);
#define d2_on    output_HIGH (PIN_A0);
#define d3_of    output_LOW(PIN_A5);
#define d3_on    output_HIGH (PIN_A5);
int32  value=0,val2,ind=0,ind2=0,cnt5=0,d1;
void off();
int thu,ten,unit,digit;
void zero(){
 aon;
 bon;
 con;
 don;
 eon;
 fon;
 gof;
}
void one(){
 aof;
 bon;
 con;
 dof;
 eof;
 fof;
 gof;
}

void two(){
 aon;
 bon;
 cof;
 don;
 eon;
 fof;
 gon;
}
void three(){
 aon;
 bon;
 con;
 don;
 eof;
 fof;
 gon;
}
void four(){
 aof;
 bon;
 con;
 dof;
 eof;
 fon;
 gon;
}
void five(){
 aon;
 bof;
 con;
 don;
 eof;
 fon;
 gon;
}

void six(){
 aon;
 bof;
 con;
 don;
 eon;
 fon;
 gon;
}
void seven(){
 aon;
 bon;
 con;
 dof;
 eof;
 fof;
 gof;
}
void eight(){
 aon;
 bon;
 con;
 don;
 eon;
 fon;
 gon;
}

void nine(){
 aon;
 bon;
 con;
 don;
 eof;
 fon;
 gon;
}
void comp1(){
if(digit==0)zero();
if(digit==1)one();
if(digit==2)two();
if(digit==3)three();
if(digit==4)four();
if(digit==5)five();
if(digit==6)six();
if(digit==7)seven();
if(digit==8)eight();
if(digit==9)nine();
 DELAY_MS(1);}
void mux(){
d1_on;digit=thu;comp1();d1_of;
d2_on;digit=ten;comp1();d2_of;
d3_on;digit=unit;comp1();d3_of;
//d3_on;digit=unit;comp1();d3_of;}
void mdelay()
{
mux();mux();//mux();mux();
mux();mux();mux();mux();
mux();mux();mux();mux();
mux();mux();mux();mux();
mux();mux();mux();mux();
mux();mux();mux();mux();
//mux();mux();mux();mux();
//mux();mux();mux();mux();
}
void getad(){
      int32   result=0;int8 i;
     SET_ADC_CHANNEL(3);
//       for(i=0;i<2;i++)
 //  {
  //   delay_ms(1);
 mux(); mux();mux();mux(); mux();mux();
 result=read_adc();
//}
   val2=result;
  //   value = (int8) (read_adc() * 500)/1023;
//val2 = read_adc ();
  value =   (val2* 5000)/1023;
 thu = (value/1000); mux(); mux();mux();mux(); mux();mux();
 ten = (value/100)%10; mux(); mux();mux();mux(); mux();mux();
 unit = (value/10)%10; mux(); mux();mux();mux(); mux();mux();
/*
putc(thu+48);
putc(ten+48);
putc(unit+48);
 unit = value%10;
putc(unit+48);
putc(10);putc(13);
*/
 }
void main ()
{ DELAY_MS(1);
/*
 //SETUP_ADC_PORTS(NO_ANALOGS);
//   set_tris_a(0);
   set_tris_c(0x00);
   setup_comparator(NC_NC_NC_NC);
   setup_adc_ports(sAN0 | VSS_VDD);
   setup_adc(ADC_CLOCK_INTERNAL);
setup_adc(ADC_CLOCK_INTERNAL );
set_tris_c(0x00);     set_tris_a(0xff);
     set_tris_a(0b00011001);
       setup_comparator(NC_NC_NC_NC);   // not use comparator module
   setup_adc_ports( sAN3 | VSS_VDD); 
   setup_adc(ADC_CLOCK_DIV_64);
     set_tris_a(0b00011001);
zero();//DELAY_MS(1000);
while(1)
 {
// DELAY_MS(10);
//pwmd();
getad();
mdelay();
}}