# Pic based digital voltmeter

Calculation part in Source Code Now i will explain, why i just divided the adc value by 10 instead of doing what i have written in the first line of this section.

## Ac current measurement using pic microcontroller

This will be a 5 digit mille volt value, to get real value put period. As shown in figure below. ADC module of pic microcontroller converts analog signal into binary numbers. Seven segment units are provided for digital voltmeter display which gives clear visibility of digits from long distance comparing to LCD display. Engineering and diploma students can submit this project as an academic mini project. Calculations So i think it is clear now, how to choose the resistor values. HEX file is free of coast.

So it converts analog signal to 10 bit digital number which can be back converted into voltage using following calculation in programming of digital voltmeter. This minimum analog value is called resolution. Have a look at this video for the complete project demo: Whatsapp About Embedded Laboratory Embedded Laboratory is a group of Electronics Hobbyist and Enthusiast, working on, to provide quality content to the guys starting in the Embedded Domain.

But there is point, you will not find 19k resistor in market, but as i am working in simulation so i can tune the resistor value to any value, so in practical use, fine tune the values, with the equation above and with the resistors you have.

### Digital voltmeter using msp430

Calculation Logic Explanation: The Voltage which needs to be measured is first scaled down by 20 times with the help of voltage divider circuit, so whatever voltage PIC micro-controller's analog to digital converter will measure, have to be multiplied by 20 times to get back the exact value. For scaling down the voltage we will use the voltage divider circuit, which is shown below. Liquid crystal display is used to display values of voltage. So choice is yours. It can measure voltage between 0V to 30V DC. This will be a 5 digit mille volt value, to get real value put period. HEX file absolutely free! Have a look at this video for the complete project demo: Whatsapp About Embedded Laboratory Embedded Laboratory is a group of Electronics Hobbyist and Enthusiast, working on, to provide quality content to the guys starting in the Embedded Domain. Well, did you build the project? Engineering and diploma students can submit this project as an academic mini project. We are providing the. ADC increment by one. PIC16FA microcontroller can not directly read 40 volt. Related Posts:. One thing is important, as PIC is a 5V device and directly connecting such a high voltage V on the micro-controller, will definitely i am not using probably word, as it will definitely blow the device damage the micro-controller.

PIC16FA microcontroller has seven analog to digital converter channels. We are enabling the DP dot pin of 2nd unit to get real voltage.

## Digital voltmeter using pic microcontroller pdf

We are enabling the DP dot pin of 2nd unit to get real voltage. Seven segment units are provided for digital voltmeter display which gives clear visibility of digits from long distance comparing to LCD display. Liquid crystal display is used to display values of voltage. PIC16FA microcontroller has seven analog to digital converter channels. Well, did you build the project? Calculation Logic Explanation: The Voltage which needs to be measured is first scaled down by 20 times with the help of voltage divider circuit, so whatever voltage PIC micro-controller's analog to digital converter will measure, have to be multiplied by 20 times to get back the exact value. Instead of feeding directly, input voltage is reduced by a combination of voltage divider resistors. So it converts analog signal to 10 bit digital number which can be back converted into voltage using following calculation in programming of digital voltmeter. We are providing the. Below diagram shows the result of digital voltmeter using pic microcontroller and LCD display. Have a look at this video for the complete project demo: Whatsapp About Embedded Laboratory Embedded Laboratory is a group of Electronics Hobbyist and Enthusiast, working on, to provide quality content to the guys starting in the Embedded Domain. We have 4 seven segment display units, to remove the last digit just divide by

Below diagram shows the result of digital voltmeter using pic microcontroller and LCD display. According to voltage division formula, voltage less than 5 volt appear across pic microcontroller in the case of maximum input voltage 40 volt.

### Pic based digital voltmeter

Voltage divider circuit using resistor is used to step down dc voltage appearing across analog to digital converter pin of PIC16FA microcontroller. PIC16FA microcontroller can not directly read 40 volt. Above I have discussed function of each components and its working in dc voltage measurement with pic microcontroller. As shown in figure below. Apart from the basic usage digital voltmeters are also employed as panel meters for automation systems and robotics. Liquid crystal display is used to display values of voltage. Next step is to convert this digital value in voltage. Engineering and diploma students can submit this project as an academic mini project. But if you see the code given below, all the above calculation is done in a single line i.
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