The circuit is well explained with diagrams and the source code written in embedded c language is available for download. To reduce adc conversion errors like unlinearity, gain factor etc. Digital ac ammeter can also designed using pic microcontroller. Hello, can you tell me a store where i find the resistor r4 0,47. Digital dc voltmeter project using microcontroller dc watt meter design. This digital voltmeter has a sensitivity of 200mv which is a bit low but this project is meant for demonstrating how an adc and seven segment display can be interfaced to 8051 to obtain a digital readout of the input voltage. This article explains you how to design a digital voltmeter in two methods 1 using 8051 microcontroller and 2the other using ic l7017. Digital voltmeter using an 8051 microcontroller computer. This project is about the simple hack of voltmeter by arduino. Electronic voltmeter ammeter circuit pic16f876 lcd picbasic. Voltmeter and ammeter using pic microcontroller with.
The range of this dvm is 020v, but you can easily increase or decrease the range of input voltage as your requirements after you understand the voltage scaling method described in this project. He designs his own pc board for the project and explains out all of the details in the project writeup. Digital voltmeter using pic microcontroller project and. Pic dual voltmeter ammeter 040 v 010 a overvoltage and overcurrent protection for meters and proteus ecc88 tube circuit simulation. Ac voltmeter using microcontroller design help all about. Oct 06, 2018 in analog voltmeter a pointer moves on the scale to represent the voltage. The only schematics that i found had a fixed voltage and had no voltage display. A standard analogtodigital converter adc0804 is used in the current project. A simple 05v voltmeter using 8051 is shown in this article. It is a perfect addition to any diy laboratory power supply, battery chargers and other electronic projects where voltage and current consumption must be monitored. Circuit diagram of digital ammeter circuit using pic microcontroller is given below. Digital ammeter circuit diagram using microcontroller. The design of a voltmeterammeter using pic microcontroller.
If you choose to leave all changes will be discarded. Construction of microcontroller based digital voltmeter. Learning how to use those meters and using them to measure the current, voltage, and resistance of an electric circuit. Voltmeter and ammeter using pic microcontroller with images. Nov 22, 2014 voltmeter and ammeter can be easily made using pic microcontroller having adc. A meter designed to measure electrical current is popularly called an ammeter because the unit of measurement is amps. A voltmeter is connected in parallel with a device to. Then attaching the circuit should be run instead of the pic. In this article, we have come up with a new pic micro controller project. I want to make milli voltmeter using pic16f877a, which will measure up to 0. In this section, we are going to make a digital voltmeter using 8051 microcontrollers. Unesco eolss sample chapters electrical engineering vol. By itself, a galvanometer is a very sensitive ammeter. Its relatively simple to use an arduino to measure voltages.
May 17, 2017 voltmeter and ammeter can be easily made using pic microcontroller having adc analog to digital converter. The lcd volt meter uses the microcontroller power supplies as reference voltages and so it is not likely to be very accurate e. I suggest to use pic with low pin numbers and multiplexed 7 segment display. This project aims at building a digital voltmeter using an 8051 microcontroller.
Pic microcontroller picf877a adc tutorial using mplab and xc8. The heart of the voltmeter ammeter is pic16f876a microcontroller with builtin analog to digital converters adc and 2x16 green blue backlighted lcd display. Although we have few other ways to get the current parameter from a circuit, we are going to use resistive drop method, because its the easiest and simplest way to. Hello, im a little out my depth, and i was hoping i could get some pointers or in the very least a few links to relevant material.
To regulate fine subrange connect voltmeter to psu output, set up voltage at about 9v and turn r9 until voltmeter and multimeter indications are equal. Voltmeter using 8051 a simple 05v voltmeter using 8051 is shown in this article. Ammeter using shunt resistor current transformer and pic microcontroller. The circuit will be built using a pic microcontroller with a built in lcd screen which will illuminate the. In ammeter designs, external resistors added to extend the usable range of the movement are connected in parallel with the movement rather than in series as is the case for voltmeters.
This will entail everything from the designing and building of the circuit, using the software package orcad pcb editor the design process will begin designing the circuit by applying all the necessary components for the voltammeter. Digital ammeter using pic microcontroller 16f877a and seven. Other than this application, it can be used as digital ammeter circuit for current measurement in electronics experiments. Electronic voltmeter ammeter circuit pic16f876 lcd. Jun 16, 2015 the heart of the voltmeter ammeter is pic16f876a microcontroller with builtin analog to digital converters adc and 2. Pic microcontroller projects list 800 projects free. High voltage measurement voltmeter can also be designed using pic microcontroller and difference amplifier. Digital ammeter circuit using pic microcontroller and acs712. Im looking to use ics or breakout boards instead of full multimeters. My objective i need to build a unit that measures both voltage and current of the power passing through it, and passes these values on to my microcontroller. Then, you need to use the pic to calculate the actual voltage. The difference amplifier will be used to step down dc voltage instead of a voltage divider. And thus, the usage of an analogtodigital converter finds its necessity here. Our author mithun has created a digital voltmeter circuit using pic16f73a and multiplexed 7 segment displays.
Understanding the structure of the ammeter, voltmeter, and ohmmeter. Circuit diagram of digital ammeter circuit using pic microcontroller. Circuit diagram of digital voltmeter using pic microcontroller and 16. In this schematic, 30 volt dc source is applied to 40ohm load. Voltmeter and ammeter using pic microcontroller electrosome.
This note will start by explaining how to correctly. Its easy to make a simple digital voltmeter using an arduino and 16x2 liquid crystal display lcd. Dsn vc288 dual digital voltmeter circuit schematic ammeter volt current. In this circuit diagram, 30 volt dc source is applied to 40ohm load. Auto ranging voltmeter circuit with pic uc adc electrical pdf.
Ammeter design dc metering circuits electronics textbook. To improve accuracy add a voltage reference and feed the reference voltage to the vref input on the pic which is into ra3 change the control register values in the adc. Pic16f877a is enough if you do this project only for testing purposes. Digital ammeter using pic microcontroller 16f877a and. This will entail everything from the designing and building of the circuit, using the software package orcad pcb editor the design process will begin designing the circuit by applying all the necessary components for the volt ammeter. An ammeter is a measuring device used to measure the electric current in a circuit. As the name suggests, this digital ammeter project measures the current from 1 to 10 amperes and is a pic microcontroller 16f877a based ammeter that uses seven segment display along with it. Ii electronic voltmeters and ammeters alessandro ferrero, halit eren encyclopedia of life support systems eolss figure 3. Feb 14, 2017 digital voltmeter using 8051 microcontroller 1. This project builds a pretty decent voltampmeter using an atmega8 microcontroller.
Digital ammeter circuit and project using pic microcontroller. Dec 05, 2015 as the name suggests, this digital ammeter project measures the current from 1 to 10 amperes and is a pic microcontroller 16f877a based ammeter that uses seven segment display along with it. Digital ammeter using pic microcontroller project is designed to measure dc current. Voltmeter and ammeter can be easily made using pic microcontroller having note.
All the data accessed and processed by the microcontroller is the digital data. Vdd and vss of the pic microcontroller is not shown in the circuit diagram. Im trying to make a ammeter and voltmeter that is capable of reading between 030v and 010a. Mar 06, 2016 in this video will learn how to design digital current voltmeter using voltage divider and difference amplifier method, how to write code using mikro c and pic. Digital ammeter circuit diagram using microcontroller is given below. The meter provides exeptionally accurate readings due to buitin software based calibration and the use of 1% metal film resistors.
In my next article i will be posting digital ammeter using pic microcontroller. The sensor circuit is connected to the analog inputs from which we get value of the voltage. The arduino has several analog input pins that connect to an analogtodigital converter adc inside the arduino. In atmega8, we are going use 10bit adc analog to digital conversion feature to do this. Here is a digital ampere meter using pic microcontroller 16f877a and seven segments display 0 to 10 a. The main reason behind making this is from my personal experience, when i was performing one experiment in the lab, i could not find a voltmeter so i made this hack to fulfill my. This note will start by explaining how to correctly power and wire the microcontroller for sensing voltage. Mar 11, 2017 digital voltmeter using 8051 microcontroller.
A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. The main reason behind making this is from my personal experience, when i was performing one experiment in the lab, i could not find a voltmeter so i made this hack to fulfill my requirement and also i think it will help others too. Hardware schematics and lots of pictures guide you through building this project. Pic microcontroller projects list 800 projects april 2. Voltage measurement with a pic microcontroller ryan popa 03302012 design team 3 abstract the purpose of this application note is to explain how to measure a voltage using a pic18f4520 microcontroller.
Digital voltmeter directly displays the voltage in digits with the help of analog to digital converter. Ii electronic voltmeters and ammeters alessandro ferrero, halit eren encyclopedia of life support systems eolss when a voltmeter is configured, different fullscale values can be obtained by using selectableratio voltage dividers if the input voltage is higher than the amplifier dynamic range. Voltmeter and ammeter can be easily made using pic microcontroller having adc analog to digital converter. Voltmeters and ammeters are used to measure voltage and current, respectively. In this project we are going to make a low range ammeter using atmega8 microcontroller. By connecting an ammeter in series to the circuit for power adjustment appears on the display until the same current gain adjustment should be made with potentiometer rv3. Microcontroller voltmeter ammeter pyroelectro news. A digital voltmeter can display the numerical value of the voltage on a display by use of analog to digital converter adc. The range of this dvm is 020v, but you can easily increase or decrease the range of input voltage as your requirements after you understand the voltage scaling method described in. Digital voltmeter using pic microcontroller project and circuit.
The lcd has 16 pins the first two pins vss,vdd and last two pins anode, cathode are connected to the gnd and 5v. Make a digital voltmeter using an arduino projects. This project will describe how to make a simple digital voltmeter dvm using a pic16f688 microcontroller. Voltmeter ammeter uses very few external components making it possible to fit this handy meter on a small pcb. I want to design a digital voltmeter which can measure from 80 vac to 160 vac rms values only. May 20, 2012 voltmeter and ammeter can be easily made using pic microcontroller having adc analog to digital converter. In analog voltmeter a pointer moves on the scale to represent the voltage. The circuit is well explained with diagrams and the source code written in embedded c.
Pic voltmeter amperemeter this pic volt ampere meter was designed to measure output voltage of 070v or 0500v with 100mv resolution and 010a or more current with 10ma resolution. Digital voltmeter using 8051 microcontroller at89s51 with. Hello friends, i have gone through lot of post on how to design ac voltmeter using pic microcontroller pi16f9. Although we have few other ways to get the current parameter from a circuit, we are going to use resistive drop method, because its the easiest and simplest way to get current parameter. Scribd is the worlds largest social reading and publishing site. Dsn vc288 dual digital voltmeter circuit schematic. Digital voltmeter using 8051 microcontroller electronics hub. All the data processing and manipulating are in digital form, so it is essential to use adc. The lcd is connect with the digital pins 7,8,9,10,11,12. See more ideas about pic microcontroller, circuit diagram and electronics projects. At the core of any analog ammeter or voltmeter is a galvanometer. Rectifierbased ac analog voltmeter because of the high input impedance of the electronic amplifier, i2t 0, and hence current imt flowing through the milliammeter, a also flows through the load.
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