Category: Hardware
Product Number: ADE7753
Hello,
I'm currently experimenting with an ADE7753 connected to an Arduino Uno. I want to do basic measurements for the moment (frequency, Irms, Vrms).
I'm using the Arduino ADE7753 library and a basic sketch as below. I'm reading the values on the Arduino serial port.
The frequency reading is very good but Vrms is very inconsistent, values are unstable and varying on a large range.
Sketch:
#include "ADE7753.h"
ADE7753 meter; // Default constructor
// SPIClass Hspi(HSPI);
// ADE7753 meter(Hspi, 15, 4000000); // Constructor for non-default SPI bus and frequency
// Clock frequency and calibration coeficient
const uint32_t CLK_FREQ = 3579545;
const double AENERGY_COEF = 1.0;
const double VAENERGY_COEF = 1.0;
const double IRMS_COEF = 1.0;
const double VRMS_COEF = 1.0;
void setup() {
Serial.begin(115200);
meter.begin();
/*
Set channel 1 (current) and channel 2 (voltage) gain
ADE7753_GAIN_1
ADE7753_GAIN_2
ADE7753_GAIN_4
ADE7753_GAIN_8
ADE7753_GAIN_16
*/
meter.setCh1Gain(ADE7753_GAIN_8);
meter.setCh2Gain(ADE7753_GAIN_8);
/*
Set channel 1 (current) full scale
ADE7753_FS_0_5V => 0.5 V
ADE7753_FS_0_25V => 0.25 V
ADE7753_FS_0_125V => 0.125 V
*/
meter.setCh1FullScale(ADE7753_FS_0_5V);
Serial.println("Frequency\tRMS Current\tRMS Voltage");
}
void loop() {
double AEnergy = AENERGY_COEF * meter.readAEnergy();
double VAEnergy = VAENERGY_COEF * meter.readVAEnergy();
double Frequency = (double) (CLK_FREQ / 8.0) / meter.readPeriod();
double IRMS = IRMS_COEF * meter.readCurrentRMS();
double VRMS = VRMS_COEF * meter.readVoltageRMS();
// Show active and apparent energy, frequency, and RMS current and voltage
Serial.print("F: ");
Serial.print(Frequency);
Serial.print("\t");
Serial.print("I: ");
Serial.print(IRMS);
Serial.print("\t");
Serial.print("V: ");
Serial.println(VRMS);
delay(1000);
}
Thank you for any clues.
Patrick
Edit Notes
Subject edited[edited by: Pat221 at 5:13 PM (GMT -4) on 31 Oct 2025]