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Project tested and working perfectly
This is a simple Digital voltmeter project mainly focusing on designing condition circuits and demonstrating a use of Analog to Digital Converter (ADC).

Input Range: 0-15V DC

Bill of Material:
8051 Based Controller: 1
ADC0804: 1
LCD 16x1: 1
Potentiometer 10K: 1
Resistor 10K: 2
Resistor 200K: 1
Resistor 100K: 1
Capacitor 33pF: 2
Capacitor 10uF: 1
Capacitor 150pF: 1
Capacitor 100nF: 1
Crystal 12Mhz: 1

File Info:
Voltmeter.hex: Direct hex file load and run
LCD.c LCD.h: LCD Routines and header file
Voltmeter.c: Main C file and ADC Routines
Volt.txt: Explanation of conditioning circuit
Voltmeter.uv2: Keil Project if anyone wants to edit something.

Hope this small project is useful for many of you. For any doubts Please visit forum.
Tags digital voltmeter projectdigital voltmeter using 8051

18.3 kB





31 Mar 2015: 14:12 PM
Sir, can you please provide the proteus file for this?
01 Apr 2015: 14:19 PM
Can you please provide the proteus file for this circuit. I have made a circuit on proteus but it does not seem to be working,
03 Apr 2015: 11:07 AM
@Akshayyy, Please post in forum with proteus file attached. We cant help here in comments area.
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Tue Oct 06 2015, 08:22 AM
HI you looking for ideas or you have solution
Fri Oct 02 2015, 03:39 PM
poojitha: projects on wireless communication between two microcontrollers
Thu Oct 01 2015, 04:38 PM
hey! i wanted to simulate my circit using proteus. i have a sugar cube relay in my circuit....but i dont know which one is that in the device libraries of the software. any help? thankyou.
Tue Sep 29 2015, 09:40 PM
@Michal, that rocket is too heavy for itself and trust is not enough unless afterburners are fed with fuel properly.
Sat Sep 26 2015, 08:19 PM
Hello, its possible to make a amateur rocket with this engine, or something simillar, which be able to flight?
Thu Sep 24 2015, 10:38 AM
Ir Switch sir.
Wed Sep 23 2015, 01:10 AM
@engr1931 which project ?
Tue Sep 22 2015, 11:57 AM
Hello sir, is it ok to use 12.000MHz oscillator in IRswitch, because the requirement written in the post is 11.059MHz. And i use PIC1018 as an Ir receiver
Mon Sep 21 2015, 04:15 PM
Hello sir, your blog is kind of helpful for us especially students. May I know do you have the coding for decimal to binary using proteus 8. My mini project is about to convert decimal to binary just like a calculator. The output is LCD. A bit confusing is the decimal to binary coding on proteus 8. pls help thanks.
Sun Sep 20 2015, 09:08 PM
Have you searched our Embedded GSM Development and GSM and CDMA Discussion forums ?



Tue Oct 06 2015, 01:02 PM
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Fri Sep 25 2015, 10:57 AM
Wed Sep 23 2015, 08:13 PM
Wed Sep 16 2015, 04:55 AM
Mon Sep 14 2015, 03:06 PM
Fri Sep 11 2015, 06:03 AM


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praveenraoms Avatar
Posted By praveenraoms
Tue Oct 06 2015, 01:06 PM
hi i want to know the code to access the geographi...
sachinmm Avatar
Posted By sachinmm
Wed Sep 30 2015, 08:54 AM
how to used polling method in this?? my code is co...
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:39 PM
__irq is just compiler directive to wrap IRQ routi...
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:36 PM
The comment does say the time values as per the th...
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:33 PM
are you testing this on Proteus? or MplabX simulat...
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:31 PM
[Topic moved to ARM Development Forum]
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:29 PM
start with reading datasheet. SPI interface on LPC...
ajay_bhargav Avatar
Posted By ajay_bhargav
Tue Sep 29 2015, 09:27 PM
I am not sure you've solved it or not but "USARTRe...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Sep 29 2015, 06:31 PM
i am confused in "__irq" it is uesd??sachin...
sachinmm Avatar
Posted By sachinmm
Tue Sep 29 2015, 11:11 AM
my I2C.c file=>>/*********************************...