arduino voltage sensor ac

2022.07.31
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arduino voltage sensor ac

I also have a very similar application, where I have to monitor AC voltages of 3 phases. float fRedPhaseVoltage; // stores the voltage in the Red Phase voltage transformer 2ma arduino phase module sensor active single ac I have a question about analog output. when I pull out cable from shifter-To-ESP32(pin15), there is zero value on it. https://surtrtech.com/2020/04/08/measure-any-ac-voltage-250vac-with-zmpt101b-and-esp8266-12e-with-android-app-adafruit-io-mqtt/ Sir i also want to run other perimeters what can i do Hello! For the measures Im using an OLED display, you can checkMy previous tutorial, on how to use it with different examples.

lcd.print(Voltimetro); inputStatsR.input(SensorR); // log to Stats function

Your email address will not be published. Its actually a formula to calculate the input voltage RMS by using the maximum value of the sensor output voltage. Hi, sorry I didnt tried it with an ESP32, but first the module should be powred by 5v, you should use an external source as the operating voltage of the ESP is around 3.3v I think, use the VCC and GND for power, then for the ESP32 use an Analog input and GND with the Signal and GND from the module, and make sure to use a proper level shifter, I think a voltage divider can do the work. or maybe you would recommend some other way to do it instead? https://surtrtech.com/2019/12/11/measure-any-ac-current-with-acs712-and-arduino-lcd-oled/ Hi Sir https://esphome.io/components/display/ssd1306.html it works For the intercept and slope, you should modify them depending on your calibration, first dont forget to set the module potentiometer as I showed in the tutorial, just by observing the serial plotter until you get an acceptable shape. I have a 120V 60Hz power network. Im combining the ACS712 and the ZMPT101B in one code at the same time. The watchdog is reset every time loop() runs or you call delay() or yield() but if you have blocking code like the above ( when you check milliseconds) then the watchdog may time out. Hi, i tested it exactly as your code and it works pefectly, but now i want to run it inside a bigger project and i get a lot of noise (same hardware, more complex arduino code). Unfortunately I don't use Arduino IDE, I use ESP-IDF, so as for Arduino code, I can't tell you anything.

I also note that the value you get as 511 is different when we consider esp32 since its ADC is 4096.. This module measures the peak-to-peak voltage. current_Volts= current_Volts*(40.3231); //Further calibrations for the amplitude. HI DEAR Open the serial plotter of the Arduino IDE: Youll see something like this in your serial plotter, it means you dont acquire the whole signal, adjust the potentiometer until you have something that looks like a sinewavish thing. It worked, but when i add a delay the measurement become off, do you know why? Hello Surtrtech, Ill just copy it here: I have used level shifting to protect damages from 5 voltage. You need 2 other variables for all: fVoltage = fVoltage * (fAmplitudeMultiplier); //Further calibrations for the amplitude. How did you calculate the calibration values? Because you should remove it if youre using the code in another project. because I had the same question toda, and I responded there.

so, could you share that ZMPT101b parts library in .fzpz format please? After that i supply with known voltage and adjust Slope while I reach the known voltage. /* This code works with ZMPT101B AC voltage sensor module Would you have any tip to help me? As we dont have a generator, Im developing a latching relay (Panasonic 50A and 90A relays) system that can wait 30-60 seconds before allowing power into our home. const float fFrequency = 50; //Test signal frequency (Hz) 11 dB reduces input signal to about 1/3.6, so 3.3/3.6 < 1.1 V and it should show you AC sine on graphs. thanks for your great article. but it is same. Thank you! Its actually a formula to calculate the input voltage RMS by using the maximum value of the sensor output voltage. The calibration of the slope and intercept can be pretty tricky, its best to start from the given values then modify them a little bit, otherwise put the AC voltage to 0, remove the slope and intercept completly, current_Volts = intercept + slope * inputStats.sigma(); > current_Volts = inputStats.sigma();. A non TRMS Multimeter will give you a false reading for a non Sinewave signal too, as you can see the cheap one (blue) compared to our project, its 40V difference which is not good. Yes, you can use almost the same code for ESP32. I am not found it, I dont have it that was just a png image. Serial.begin( 9600 ); // start the serial port You can do the same process for standard 120V. may i beg your zmpt101b fritzing parts? You can see Pinout of this module in the following image. Connect the module to the Arduino according to the following image. Thank you very much.

Forgot to mention, using a Arduino Mega (clone) 2560, ZMPT101B, there are other things in the code but that has nothing to do with the AC voltage measuring thing, can put the full code if required. For the ESP32 I think it has a 12bits one so the values will be (0-4096) for (0-3.3V), The module could (Im not sure) work with 3.3V, You can try to power it using 3.3V and GND from the ESP32, Measure with a multimeter the value should be around 1.6V, if this works it means you can wire it directly as the max voltage can never be higher than 3.3V. Serial.begin( 9600 ); // start the serial port Test first with only this line Serial.println(analogRead(A0)); add the necessary things like void setup, serial begin., upload the code to the board and open the serial plotter in Arduino IDE, youll see values around 1.65V (2046) maybe. Hi, No problem, do you use Serial plotter to see the shape of the signal? HiLetgo 37 Sensors Assortment Kit 37 Sensors Kit Sensor Starter Kit for Arduino Raspberry pi Sensor kit 37 in 1 Robot Projects Starter Kits for Arduino Raspberry pi, Variety of Sensors for Your Electronic Projects, All customers get FREE Shipping on orders over $25 shipped by Amazon. voltage is almost 2.6v to 3.3 v on pin15.

Hello guys , In My team we are building a Eletric generator . As you said, the output will be between 0 and 5 volts, but I cant say the exact value. but there is always 4096 value on it. And about ESP32, you need to replace 511 with 2050. For the last line to calibrate you can remove it, if you do this. ElectroPeak Inc. 2019. So.

const float fAmplitudeMultiplier = 40.3231; // some constand required to multiply with voltage, this can be tweeked if required How did you calculate the calibration values? I am not sure but it does not work as signal-out value remain same. Hi. void loop() { Doubts on how to use Github? The first thing you need to do, is calibrating the module by its potentiometer, you wire the module, plug the Arduino and upload this simple code, and dont forget to place you measuring probes to the power socket (BE CAREFUL !!!) float Volts_TRMS; // estimated actual current in amps

First, you should use code 1 to get the maximum of the output voltage of the sensor. Be aware of safety tips when you connect the input voltage (e.g. it show abrupt changes in reading which is not good.

Mein was based on an code I made before to measure current so I had to readjust, Hi my problem is that it deos not work ESP32, I am trying to get voltage reading on ESP32. i like this project. RunningStatistics was not declared in this scope. //float slope = 0.043; // to be adjusted based on calibration testing, //float current_Volts; // Voltage Hi. Hi, did you ask me on hackster? So, I give you the same answer. The module takes the signal we want to measure, here a 220V domestic power, it has around 311V as its peak. Forgot to mention, I am using a Arduino Mega (clone) 2560, ZMPT101B, there are other things in the code but that has nothing to do with the AC voltage measuring thing, can put the full code if required.

First, please make sure everything is working fine: Serial.print( Y:); About the multimeter, cheap multimeters measure all AC signals as sinewaves, if you want to use it to calibrate, measure AC sinewave signal from a socket or after a transformer, but since I used a Triac based light dimmer I had to use a TRMS multimeter to get the right value., You can start by the values given above, as I said they are very sensitive, or you can put the Analog input to 0 and make slop=0 then adjust the intercept to get 0 as the result, then put the voltage to a known value, and the intercept to its new value and adjust the slope. Thanks in advanced, Now your module is calibrated, the code calibrations will be based on it so try to not change it. Questions: 1- Im using an ESP32 microcontroller with Home Assistant (ESPHome). (+/-30Amp), ELEGOO Upgraded 37 in 1 Sensor Modules Kit with Tutorial Compatible with Arduino IDE UNO R3 MEGA Nano. Sensor=2; for 3 inputs. boards. 3 different currents volts, // put your main code here, to run repeatedly: //Determine the incoming AC voltage on each phase on Easy measure of AC Voltage using Arduino and ZMPT101B, Arduino RC LASER Tank, Self-propelled LASER Turret, Waterproof ultrasonic module JSN SR-04T to measure distance with Arduino, Easy measure of AC Voltage using Arduino and ZMPT101B, Measure any AC voltage (250VAC) with ZMPT101B and ESP8266 12E with Android App / Adafruit IO MQTT, Measure any AC current with ACS712 and Arduino + LCD / OLED, https://www.youtube.com/redirect?event=video_description&v=nExAAbO-Lc4&redir_token=6gl2uh2TPcHiTf8scjdwowsvAud8MTU1NjU0NDU0MUAxNTU2NDU4MTQx&q=http%3A%2F%2Fsentroino.blogspot.com%2F2015%2F12%2Fmeasuring-ac-voltage-using-arduino.html%3Fm%3D1, https://surtrtech.com/2019/12/11/measure-any-ac-current-with-acs712-and-arduino-lcd-oled/, https://esphome.io/components/display/ssd1306.html, https://github.com/Abdurraziq/ZMPT101B-arduino, Measure any AC current with ACS712 and Arduino + LCD / OLED SURTR TECHNOLOGY, https://www.arduino.cc/reference/en/language/structure/control-structure/if/, Measure any AC voltage (250VAC) with ZMPT101B and ESP8266 12E with Android App / Adafruit IO MQTT SURTR TECHNOLOGY, https://surtrtech.com/2020/04/08/measure-any-ac-voltage-250vac-with-zmpt101b-and-esp8266-12e-with-android-app-adafruit-io-mqtt/. Hello Serial.print( current_VoltsS ); //Calculation and Value display is done the rest is if you're using an OLED display, Serial.print( "\tVoltage (T): " ); Hi. How can we measure both voltage and current using Filters.h (check the video or read a code, third code or LCD/OLED code). 3 of these part: thank you for being willing to help. const int iBluePhaseSensorPin = 2; //Sensor analog input, pin A2 i added a delay(3) inside the loop to simulate other work and got the same problem. float current_VoltsS; // Voltage As you can see in the article, the image of the output of this module is provided -right above the step 3 section-. Serial.print(fYellowPhaseVoltage); Therefore, I need an Arduino (Particle.io) program that can monitor BPLs grid, switching OFF my homes power internally, when power is lost (will use UPS to power Arduino), then watching (with ZMPT) until BLPs power comes back on to then switch the entire house back ON again to BPLs grid. Suggest corrections and new documentation via GitHub. As salam alaikm dear and you already know the voltage over.

Thats all folks, I hope you like it, be careful and if you have any probel feel free to contact me, dont forget to support the channel by a subscribe.