Voltage And Current Measurement Using Pic Microcontroller

The TRIAC we're using is the BTA312. And the ADC, microcontroller, and LCD need to have to same ground unless a complicated isolation scheme, probably optical, is employed. AC Current Measurement using PIC Microcontroller AC Current Measurement using PIC Microcontroller. Hi every one this is me M. This device monitors household power usage and logs it to an SD card. 47 ohm special resistor with fuse (shown in figure) and current is calculated. It works the same as an electrician's clamp-on ammeter, where heavy-duty Voltage measurements can be used to calculate current flow through a device or through any portion of a circuit. In this application, the PIC reads its ADC 240 µs after receiving the interrupt on the trigger input. The circuit is similar to that of positive scalar except that the feedback resistor Rf is replaced by a load resistor RL. respond to gesture. Where PIC receives this voltage and displays the AC mains voltage on LCD by doing calculations. 5 volts (0-5 volts range) taking 40 samples of the peak voltage. Best way to measure current (PIC 16F886) Hi, I've been trawling through the net for a while now and I am unsure of the best way to measure the current of a part of my circuit using my PIC. The signal applied to these input terminals must come from CT and PT. But of course, you shouldn't have voltage that high on the inpu. In this project we are going to make our own Digital Ammeter using PIC16F877A Microcontroller and current sensor ACS712-5A. The PIC MCU should start capturing the voltage at the ADC channel after about 1. The use of distributed generation, the connection of non-linear loads and the presence of some unexpected system faults are the main causes of frequency variations.



AC voltage measurement using pic microcontroller and op-amp. Specifically, the program that uses this method only uses digits 1, 2, 4 and 5- so to be efficient, the scanner method is to only use RC0, RC1, RC2 and RC3 as the. The simplest way of doing this is to place a resistance in series with the current path and measure the voltage drop across it. pic microcntroller to measure mains voltage and load current without using current transformer or volage transformer. Measurement of the three basic quantities: voltage, temperature, and current can provide enough information to allow for debugging. This free Engineering essay on Essay: DC VOLTAGE MEASUREMENT USING THE PIC MICROCONTROLLER AND PWM is perfect for Engineering students to use as an example. To measure any electrical quantity through microcontroller you just need to convert it into its range. You will see the half waves of a sinus in the ADC. PIC16F877A 2. The voltage and current required to energize the relay should also be in similar range (e. The AC voltmeter measured the RMS value while DC volt meter is measuring the peak voltage at the output of peak detector circuit. 25V (Approx. PIC Microcontrollers - Programming in Assembly. A/D converters: This analog to digital converter is used to convert analog voltage values to digital voltage values. Light sensors for microcontroller digital inputs by Gary Peek Published in Nuts & Volts magazine, April 2003 About the author Gary Peek is the President and co-founder of Industrologic, Inc.



LPG Gas Leakage Detector using (MQ-9) Gas Sensor and pic18f2550 Microcontroller. I want this use a microcontroller to provide data I seems to me that the 50mV from the shunt is far too low a value to measure directly with the AVR's ADC, not to mention the problem of the "negative voltage" on the shunt with the battery is being recharged (and yes, I do want to measure charge. It is capable of measuring the energy used by the DC Voltage power source device of 20 Volt, and has power of 2 to 400 W. The microcontroller does not have an operating system and simply runs the program in its memory when it is turned on. Signal conditioning amplifier, analog filter, and attenuator for microcontroller analog inputs and outputs, current to voltage converter circuit, and voltage to current converter circuit provides 4-20mA current loop inputs and outputs. Tutorial to learn measuring voltage and current using a multimeter. PIC Microcontroller, Analog to Digital Conversion Avoiding constant current draw in RC A2C converters that use a voltage divider to measure higher than the uP's. Measuring Voltage and Design of Voltage Divider Circuit. But all these tutorials are about measurement of low DC voltage. The course teaches a basic knowledge of DC circuits. It works the same as an electrician's clamp-on ammeter, where heavy-duty Voltage measurements can be used to calculate current flow through a device or through any portion of a circuit. The data is sensed using various electrical sensors and processed by microcontroller. The LDR sensor is used to monitor the light intensity, voltage by voltage divider rule, current by the Solar Energy Measurement System Project Kit. Light sensors for microcontroller digital inputs by Gary Peek Published in Nuts & Volts magazine, April 2003 About the author Gary Peek is the President and co-founder of Industrologic, Inc. In this project I have explained how to measure AC current using difference amplifier and pic microcontroller. A simple analog front-end amplifies the signals from voltage and current detectors and an ATmega168 microcontroller computes the power consumption using the formula P=V*I. To use ADC module we will convert current into voltage form by using a.



The graph of maximal motor speed versus supply voltage is shown in Figure 13 below: 0 1000 2000 3000 4000. Keywords: ATmega328P-PU, Measurement, ATmega328P-PU, Processing, hardware, ADC. Diego Alejandro*, G. 5 mA to flow through Q1 Q1 and Q2 form a temperature-compensated pair of emitter followers. pic microcntroller to measure mains voltage and load current without using current transformer or volage transformer. Alternating Current Voltmeters are most common devices for Embedded and Hardware Engineers and are used on daily purpose for measuring AC RMS voltage values in their circuits. In PIC microcontroller architecture, the architecture ROM stores the instructions or program, and based on the program the microcontroller acts. Simultaneous display of voltage and current and mAh data for easy viewing mAh mobile power output can be detected Save multiple sets of test data, power-down Save feature Does not affect the data transmission Higher accuracy, the current parameters of the basic will not bounceUSB and Micro USB port. AC voltage measurement using pic microcontroller (23). microcontrollers has to know voltage and current values anyhow. 5 volts (0-5 volts range) taking 40 samples of the peak voltage. Shop new and popular microcontrollers and microprocessors for every application, in-stock and ready to ship today. You'll learn what can we do with the mostly unused AREF pin of Arduino, Voltage Divider and how to use ACS712 and INA219. You have came across many online tutorials on various websites about voltage measurement using different microcontrollers. circuit of MMA8451Q is simple for its using the MEMS technology, which only includes RC low pass filters and the power filter for reducing clock noise and the power noise. 4 Voltage divider circuit maximum measurable voltage and current, since it is. In this project we are going to make our own Digital Ammeter using PIC16F877A Microcontroller and current sensor ACS712-5A. You can use this circuit to measure up to 30V DC. In this project I have explained how to measure AC current using difference amplifier and pic microcontroller.



To minimize the path resistance we will use. supply voltage which is 5V. And the ADC, microcontroller, and LCD need to have to same ground unless a complicated isolation scheme, probably optical, is employed. 3 and its component. ) resolutions. The microcontroller will provide the on/off signal to the base of this transistor. By using suitable circuit response of the sensor is given to the microcontroller based on the response microcontroller plays the recorded voice using APR9600. Voltage is always measured between two points in a system. Possible Duplicate: How do I measure a negative voltage with a ADC? How do I sample a -2 V to +2 V analog signal with a PIC microcontroller? I want to measure the negative and positive DC voltage with a microcontroller If the voltage is not in the range of 0 to 5 then I will need some divider circuit or the scaling circuit to measure the. measuring True RMS voltage and frequency is part of that project, alongside of spectrum the LCD screen will but MSP430 is mixed signal microcontroller , it has few very advanced peripherals to support some light weight DSP operations. I advice you to please take the below tutorial. These measurements are then displayed by the microcontroller to a LCD screen. The practical issues can be different based on how much voltage and current you plan to measure. You may like to check these project. Connect each pin of that to the corresponding PIC pin, using the PIC pinout from its datasheet. - The over current value is set in the PIC and when faults (over current). This digital thermometer is built around the LM35 which is a precision integrated-circuit temperature sensor whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. Internal analog to digital converters acquired data from an analog interface. A PIC 16F876A microcontroller will be used in the volt-ammeter. 100 Ohm current sense resistor.



Note: Using a 1 second measurement period results in the frequency counter count value being a direct measurement of frequency requiring no For the following projects the crystal oscillator (of the microcontroller) is used as the timebase. As the output of the Barcode scanner is RS232 we will require MAX232 IC to convert the RS232 voltage levels to TTL level to be interfaced to Microcontroller. "Speedometer" counts the events when the external input clock (pulses which are counted) by the pin RA4/T0CKI. INTRODUCTION TO THE ARDUINO MICROCONTROLLER • Use analogRead(A0) to measure the voltage on the center pin acts like a current-controlled switch. In this Post you will learn how to design an Embedded system to measure temperature using PIC18F4580,so as you know Transducers convert physical data such. Connect each pin of that to the corresponding PIC pin, using the PIC pinout from its datasheet. AC voltage measurement using pic microcontroller and op-amp. The TRIAC we're using is the BTA312. Two common voltage measurements are direct current The following example demonstrates this type of measurement using an CompactDAQ chassis It also characterizes the ability of an electrical system to prevent high-voltage and transient. ADC module of PIC can measure 0 to. supply voltage which is 5V. AC voltage measurement using pic microcontroller. Focus areas: RTOS based parallel thread application design using PIC microcontrollers with OSA RTOS in mikroC pro for PIC series compilers. Signal conditioning amplifier, analog filter, and attenuator for microcontroller analog inputs and outputs, current to voltage converter circuit, and voltage to current converter circuit provides 4-20mA current loop inputs and outputs. While DSPs are the primary controllers in uninterruptible power supplies (UPS) with power-factor correction (PFC), ac generation and battery management, microcontrollers serve secondary functions for status and command features in analog-controlled dc-dc converters.



On/off controls are among the simplest controllers and work by setting a hysteresis band. In a typical 12V DC lead acid battery system, we will definitely see a voltage range of 11-14V DC, possibly more. Just measure the voltage, rest of the values is obtained by calculation. Use ADC available in PIC to measure voltage. Voltage dividers switches, Pull-up Resistor and Pull-down Resistor ! Neutron Capture by a Uranium U-235 Nucleus and Emission of a Beta Particle ! The Tissue Penetrating Power of Radiation. 7k C1 2200uF 10k From 1k PIC S D G SOLAR PMOSFET PANEL Battery 10k 3. This has been achieved by taking the ADC values from voltage and current signals at the instants of peak voltage V m and 0 voltage, i. I advice you to please take the below tutorial. PIC16F676 is the heart and brain of this circuit. Part 2 - Interface the sensor with a PIC microcontroller. actually i wish to measure with pic microcontroller's internal have you though about using a resistor for both current and voltage? watch you might want to put a WYA on your PCB. divider is used at pin2 and pin4 of the microcontroller using resistors R 2, R 3, R 4, R 5,R 6, and R 7 to scale down the voltage from 0V – 5V. 07:31 c language, distance, distance sensor, embedded, how coonect ultrasonic sensor, measure distence, microcontroller, pic programming, pic18f, pic18f2520, ping sensor, program, ultrasonic Ultrasonic Distance Sensor with PIC microcontroller Ultrasonic distance sensor uses to measure the object distance w. The circuit I have designed on Proteus using differential amplifier that converts 220 Volts to 2. Example, if all the chips can go as low as 2. Specifically, the program that uses this method only uses digits 1, 2, 4 and 5- so to be efficient, the scanner method is to only use RC0, RC1, RC2 and RC3 as the. military, aerospace, and test and measurement markets. Voltage scaling stage: It is used to scale the voltage measured form the battery or PV cell to the level that can be measured by the microcontroller (from 18V to 5V).



measuring True RMS voltage and frequency is part of that project, alongside of spectrum the LCD screen will but MSP430 is mixed signal microcontroller , it has few very advanced peripherals to support some light weight DSP operations. To use ADC module we will convert current into voltage form by using a. If I use just a voltage divider to get it into measurable range, the divided voltage will only vary across 30% of the ADC's range. See more: using multiple proxies time, full time designer need, payment processed using paypal account time magento, average time construct fully functional website, night time shift need server, using auctioneer real time search, communication pic chips using rs232, pic microcontroller. I will use the same connection here to have the same results. Design of Load Sharing control system using PIC Microcontroller: The main aim of this project is to adjust the availability power with consuming load. Similarly, find the current on the chart where Vol is 10% of the supply voltage and use it as the maximum Iol. It uses PIC microcontroller. Tutorials, PIC Microcontroller, Hi-Tech C. Power-supply monitor (PSM) for power-on reset and reset when the supply voltage falls below a defined threshold. ADC module of PIC can measure 0 to. Example, if all the chips can go as low as 2. It can be find by taking tangent of ratio of time between zero crossing of. These measurements are then displayed by the microcontroller to a LCD screen. Two types of seven segment displays are in use. Same as current rating, buy a transformer with minimum secondary voltage. The capacitive sensing oscillator consists of a constant current source and a constant current sink, to produce a triangle waveform. Franklin Mee r * Department of Electromechanical Engineering, Santander Paula Francisco University. Measurement of the three basic quantities: voltage, temperature, and current can provide enough information to allow for debugging.



microcontrollers has to know voltage and current values anyhow. According to the information of receiving signal it changes it's output signal. We developed the microcontroller using Code Composer Studio in the PIC C language. Microcontroller Based Voltage Measurement. To measure any electrical quantity through microcontroller you just need to convert it into its range. There are analog and Digital voltmeters are available in the market. Voltage range for this microcontroller is 0-5 V. You may like to check these project. 7 segment display interface with PIC microcontroller 7seg display and will use PIC18f2520 microcontroller to display data on 7seg. i want to measure 220V ac voltage and 5-15A current using pic. 7, we can keep a small margin and set that voltage for the whole board. Also PIC cannot run without using its crystal oscillator which is used to execute the programming code. Internal analog to digital converters acquired data from an analog interface. When the Input voltage is 30V (max) the voltage across 20K ohm resistor becomes 5V which is feedback to the analog pin RA2 of the PIC Microcontroller. Possible Duplicate: How do I measure a negative voltage with a ADC? How do I sample a -2 V to +2 V analog signal with a PIC microcontroller? I want to measure the negative and positive DC voltage with a microcontroller If the voltage is not in the range of 0 to 5 then I will need some divider circuit or the scaling circuit to measure the. This paper deals with digital measurement of power frequency i. 08Amps, 220/240V, 50Hz, properly working.



For PIC microcontroller direct drive of the LED is possible because of high sink source capability. The corresponding voltage is then converted to current value using the formula that was discussed in the previous tutorial. The integrated gate drive circuit and three-phase inverter take the microcontroller output to produce a three-phase alternating current. Has any body tried this ? What are the main merits and demerits of this topology ? *TS9*. of phase current, phase voltage, vibration and winding temperatures of an I. Do you want to unsubscribe in order to stop receiving notifications regarding "ac current measurement using pic microcontroller" changes. The electronic power meter is based on a microcontroller from Microchip Technology Inc. The quickest way to display something is probably sending the data to the computer to be displayed on the monitor. The microcontroller is programmed with C language; ADC channels are used for converting both current analog signal and voltage analog signal; multiply algorithm is used to process the power and energy, voltage and current signals based on the energy formula and many parameters are displayed such as voltage, current, Active power, reactive power. It is just one device among many PIC microcontrollers and it is a veteran chip compared with many others. Current can be measured by measuring the voltage across a resistor. Topics: Analog-to-digital converter, Microprocessor The digitized output if microcontroller can be used for various purposes, like in power plants we can use this Experiment I Simple Voltage and Current Measurement Objective The objective of this. PIC microcontroller operates at +5 V which can be regulated using the voltage regulator (L7805) which conserves voltage at +5 V if the input voltage for it exceeds +5 V. frequency measurement plays a major role in the power line transmission system. Shunt resistors are used as transducers for converting current into voltage as microcontroller. * Este producto viene desde China DESCRIPCIÓN 4 Canal de relé de 5V Módulo Tablero Escudo Por PIC AVR DSP del BRAZO MCU para Arduino ESPECIFICACIONES Features. Voltage Measurement with A PIC Microcontroller Ryan Popa 03/30/2012 Design Team 3 Abstract The purpose of this application note is to explain how to measure a voltage using a PIC18F4520 microcontroller. Controllers also can be set to accept voltage or current signals in the millivolt, volt or milliamp range from pressure, level or flow sensors, among other types. We could use a demux to send the data to all the drivers. An AVR-based power usage logger.



MCLR This pin is used to erase the memory locations inside the PIC (i. This circuit, based on a PIC microcontroller with a few added components, converts a sensor-based voltage into a 4- to 20-mA current loop. 1 ohm shunt resistor across CT and we will measure this voltage drop across shunt resistor. circuit of MMA8451Q is simple for its using the MEMS technology, which only includes RC low pass filters and the power filter for reducing clock noise and the power noise. Internal analog to digital converters acquired data from an analog interface. They have large metal cases. The microcontroller's A/D can measure a voltage between 0 V and 5 V. To use ADC module we will convert current into voltage form by using a. SECURE ELECTRONIC LOCK USING PIC 16F628A MICROCONTROLLER Muhanad Hayder Mohammed Lecturer in Computer Science Department, University of Kerbala Iraq muhanad. To measure the current, the calibrator passes the current over a very low-value resistance and sends it to the ADC. AT Keyboard Interface V1. The current can still be calibrated, but the measured voltage field has been disabled (was You are using the radio telemetry to calibrate the battery measurement function as you should not have the I experience the same difficulty to get correct voltage and especially current measurements with an. The project requires an LDR sensor for measuring light intensity, a voltage divider to measure voltage and a temperature sensor to measure the temperature. Franklin Mee r * Department of Electromechanical Engineering, Santander Paula Francisco University. I need to write a program that will check if an input pin of PIC has a. The microcontroller will provide the on/off signal to the base of this transistor. This digital thermometer is built around the LM35 which is a precision integrated-circuit temperature sensor whose output voltage is linearly proportional to the Celsius (Centigrade) temperature.



As the output of the Barcode scanner is RS232 we will require MAX232 IC to convert the RS232 voltage levels to TTL level to be interfaced to Microcontroller. Specs not in the datasheet may change at any time. AC voltage measurement using pic microcontroller , In this video lecture you will learn about ac voltmeter design circuit using current transformer and difference amplifier, How to use ADC for. Bomb and Fire detection Robot uSING MICROCONTROLLERS. To measure any electrical quantity through microcontroller you just need to convert it into its range. Erney Fabia n*, P. Introduction A voltage stabilizer is a complex power system capable of keeping the output voltage stable and constant. You can use this circuit to measure up to 30V DC. AC voltage measurement using pic microcontroller and op-amp. Voltage dividers switches, Pull-up Resistor and Pull-down Resistor ! Neutron Capture by a Uranium U-235 Nucleus and Emission of a Beta Particle ! The Tissue Penetrating Power of Radiation. The applied software using the microcontroller’s interrupts managed to achieve concurrency on the running program. Has any body tried this ? What are the main merits and demerits of this topology ? *TS9*. A snapshot of the entire system, advantage over existing methods and simulation output of the process is discussed in this work. I need to write a program that will check if an input pin of PIC has a. The microcontroller's A/D can measure a voltage between 0 V and 5 V. We developed the microcontroller using Code Composer Studio in the PIC C language. Current can be measured by measuring the voltage across a resistor. Viscosity Measurement using Ostwald's Viscometer - Amrita. SECURE ELECTRONIC LOCK USING PIC 16F628A MICROCONTROLLER Muhanad Hayder Mohammed Lecturer in Computer Science Department, University of Kerbala Iraq muhanad. In this system, a typical multi-meter may include features such as the ability to measure AC/DC voltage, DC current, resistance, temperature, diodes, frequency and.



The possible applications are on bench power supply or as a digital panel meter in various systems. The graph of maximal motor speed versus supply voltage is shown in Figure 13 below: 0 1000 2000 3000 4000. The microcontroller produces a 3-phase inverter PWM signal to control the HVAC Pump. Similarly, find the current on the chart where Vol is 10% of the supply voltage and use it as the maximum Iol. There are lots of articles, projects and circuit diagrams available on the web that use the PIC16F877A so it seems to make sense to use it but should you still use this chip? The quick answer is an immediate no. It is based around a current loop from transmitter to receiver that is varied between 4-20mA under normal operating conditions. When trying ATTINY2313 as U3, I found that the voltage swing on AT90S2313 U4 was not sufficient to clock U4. In this project, we are going to make an AC Voltage Measuring Device using Arduino, which will measure the voltage of Alternating Current Supply at our home. To measure this current with pic microcontroller,we have to use ADC module of PIC microcontroller. Use ADC available in PIC to measure voltage. We are using our microcontroller programming skills as well as our circuit designing expertise for the required design. There are lot of blogs present on the internet explaining ADC's. This is a digital method of measuring phase angle and displaying lagging and leading state between the waves on a liquid crystal display. The pic programmer translates digital logic levels from the PC to suitable logic levels for the microcontroller – most levels are fine for LVP, but for practical (or high volt) programming of a pic microcontroller the maximum of 13. My basic understanding of how to measure current with microcontroller, is that you use a shunt resistor in line of the load, and measure the voltage across the shunt. The voltage and current required to energize the relay should also be in similar range (e. QUOTE 3 The flow of electrons can be measured with the help of the current-to-voltage conversion using the internal op amp of the PIC device and the filtering of high-frequency signals.



uses the PIC microcontroller, rectifier, voltage divider and seven segment displays to complete the desired measurement. Power factor measurement using PIC18f4520 - I have a 10" square fan, with 0. - The load current (energizing current) will be measured by using current sensor and converted from analog voltage to digital using PIC16F877A. In this project, you will learn how to measure high AC voltage using PIC16f877A micrcontroller. Current Measurement. The basic building blocks for this design include a PIC 16F877 microcontroller, a N-CHANNEL POWER MOSFET (IRF 840), a step-up transformer and a load voltage sensing circuitry. Using the measured data, the reactive power. An optical encoder, along with a PIC microcontroller, provides a simple method of measuring a brushed DC motor’s speed. Built in voltage sensor seems to be temperature compensated in hardware but was tested for calibration. In this project we are going to make our own Digital Ammeter using PIC16F877A Microcontroller and current sensor ACS712-5A. EXPLANATION OF CIRCUIT DIAGRAM • 230 v ac supply is step down using CT and PT • Whole circuit operates on 5 v or 12v supply, this supply provided by using bridge rectifier • The output of CT and PT given to current and voltage measurement circuit • PIC microcontroller compares the output of both circuits with reference value. The circuit I have designed on Proteus using differential amplifier that converts 220 Volts to 2. and developing of PIC. It can measure voltage between 0V to 30V DC. It shows the system status on an LCD and can trickle charge.



Remember me in your prayers in return. Built in voltage sensor seems to be temperature compensated in hardware but was tested for calibration. The PIC microcontroller also receives the voltage and current samples generated at the output terminals of the PV module, using the internal 8-channel multiplexed 10-b A/D converter. Customer programmable 8-bit 8051 compatible microcontroller (MCU). Measuring AC Voltage Parameters with Micro-controller_Final Year Project This time we will see how to measure AC voltage parameters with the help of micro-controller. You have came across many online tutorials on various websites about voltage measurement using different microcontrollers. LPG Gas Leakage Detector using (MQ-9) Gas Sensor and pic18f2550 Microcontroller. For many years this was for Cambridge University, where he led a development team building original systems for research applications - for example in measurement of bullet speed, wind tunnel control, simulated earthquakes, or. Interfacing PIC16F877A with LM35 temperature sensor C code: The C code below was tested with CCS PIC C compiler version 5. RMS Voltage calculation usin PIC16F877A with C came to rectify the signal then use a voltage divider to make formula you can use to measure aquisition time. The Barograph Voltage monitor is based on PIC microcontroller with 10 Bit resolution ADC. digital dc voltmeter using pic1f877a microcontroller to design Digital current voltmeter using voltage divider and difference amplifier method, how to write code using Mikro C and pic. The most important advantage of using this type of barcode scanner is it can be interfaced to any Microcontroller which has serial output or even to Arduino via MAX232 IC. Most microcontrollers aren't comfortable sourcing this kind of current so we use a general purpose NPN transistor to provide it. It can measure voltage between 0V to 30V DC. This free Engineering essay on Essay: DC VOLTAGE MEASUREMENT USING THE PIC MICROCONTROLLER AND PWM is perfect for Engineering students to use as an example. There are many methods available on internet for measurement of AC current, but there is no method which used difference amplifier and a shunt resistor to measure currents in the range of.



In this video, I'll show you how you can measure current and voltage with your microcontroller and hence you can perform your said operation according to it. Voltage is always measured between two points in a system. 1-Block Diagram of the Control System INPUT LAYER Figure. Which is one fourth of the total. AC voltage current watt phase angle measurement using pic microcontroller. Overview The 4-20mA current loop protocol is an analogue electrical communication protocol. Digital Thermometer using PIC Microcontroller and LM35 Temperature Sensor – XC8 If we use the supply voltage VDD and VSS of the pic microcontroller is not. AC VOLTAGE MEASUREMENT USING PIC16F877A MICROCONTROLLER. Tim Wilmshurst is the author of Designing Embedded Systems with PIC Microcontrollers. bilalmalikuet. embedded-lab. Voltage and Current Sampling circuit is shown below. This signal is usually used to represent 1 continuously varying measurement such as temperature, pressure, e. Specs not in the datasheet may change at any time. So, the battery I need to measure is a 4s lithium ion, which means max voltage is ~16. at the instant when the voltage. Voltage And Current Measurement Using Pic Microcontroller.