The CT PZEM-004T is a versatile and widely-used electronic component designed for measuring electrical parameters such as voltage, current, power, and energy. It is particularly popular in applications involving energy monitoring, smart metering, and home automation systems. The PZEM-004T is often used in conjunction with microcontrollers like the Arduino UNO to provide real-time data on electrical consumption.
This is a smart environmental monitoring and control system featuring an ESP32 microcontroller interfaced with a PZEM004T for power monitoring, relay modules for actuating bulbs and a fan, and an LCD for user interface. It includes flame, gas, and vibration sensors for safety monitoring purposes.
Open Project in Cirkit Designer
This circuit features an ESP32 microcontroller interfaced with a PZEM004T power monitoring module and a 4-channel relay module controlling multiple AC LED bulbs. The ESP32 uses GPIO pins to control the relays, which in turn switch the LED bulbs on and off. The PZEM004T is connected to the ESP32 for communication and to a current sensor for monitoring power consumption of the connected load through the relay contacts.
Open Project in Cirkit Designer
This circuit is a smart power monitoring and control system using an ESP32 microcontroller. It features multiple sensors and components, including PZEM-004T AC modules for voltage and current measurement, DS18B20 temperature sensors, an LCD for display, and solid-state relays for controlling power outlets. The system is integrated with Blynk for remote monitoring and control, and includes pushbuttons for local interaction.
Open Project in Cirkit Designer
This circuit is designed for monitoring and controlling AC loads using an ESP32 microcontroller. It includes a PZEM004T module for measuring voltage, current, and power, and a 4-channel relay module to switch three LED bulbs. The ESP32 communicates with the PZEM004T via UART and controls the relays to manage the connected loads.
Open Project in Cirkit Designer| Parameter | Value |
|---|---|
| Voltage Range | 80-260V AC |
| Current Range | 0-100A (with external CT) |
| Power Range | 0-22kW |
| Energy Range | 0-9999kWh |
| Frequency Range | 45-65Hz |
| Communication | TTL Serial (3.3V/5V) |
| Accuracy | ±0.5% |
| Dimensions | 70mm x 40mm x 20mm |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply (3.3V/5V) |
| 2 | GND | Ground |
| 3 | RX | Serial data receive |
| 4 | TX | Serial data transmit |
| 5 | A | Current transformer input (A) |
| 6 | B | Current transformer input (B) |
#include <SoftwareSerial.h>
// Create a software serial object to communicate with PZEM-004T
SoftwareSerial pzem(10, 11); // RX, TX
void setup() {
Serial.begin(9600); // Initialize serial communication with the computer
pzem.begin(9600); // Initialize serial communication with PZEM-004T
}
void loop() {
// Request data from PZEM-004T
pzem.write(0xB0); // Command to read voltage
delay(100); // Wait for the response
if (pzem.available()) {
// Read the response from PZEM-004T
byte response[7];
for (int i = 0; i < 7; i++) {
response[i] = pzem.read();
}
// Calculate voltage from the response
float voltage = (response[2] << 8 | response[3]) / 10.0;
Serial.print("Voltage: ");
Serial.print(voltage);
Serial.println(" V");
}
delay(1000); // Wait for a second before the next reading
}
By following this documentation, users can effectively integrate the CT PZEM-004T into their projects, ensuring accurate and reliable measurements of electrical parameters.