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How to Use ZMPT101B: Examples, Pinouts, and Specs
Design with ZMPT101B in Cirkit DesignerIntroduction
The ZMPT101B is a high-precision voltage sensor module designed for electronic applications that require accurate AC voltage measurements. This module is based on the ZMPT101B voltage transformer and uses a high-precision op-amp circuit to amplify the signal for microcontroller compatibility. It is commonly used in power monitoring systems, voltage regulation, and for DIY projects that involve AC voltage sensing, such as home energy management systems.
Explore Projects Built with ZMPT101B
Arduino UNO and ZMPT101B-Based Voltage Sensor
This circuit uses an Arduino UNO to read the output from a ZMPT101B voltage sensor module. The ZMPT101B is powered by the Arduino's 5V and GND pins, and its output is connected to the Arduino's analog input pin A0 for voltage measurement.
Open Project in Cirkit DesignerESP32-Based Smart Power Monitoring System with Wi-Fi Connectivity
This circuit is designed to monitor and measure electrical parameters using an ESP32 microcontroller, a ZMPT101B voltage sensor, and a 5A current sensor. It includes visual indicators with red and green LEDs and an audible alert via a piezo buzzer, all controlled by the ESP32.
Open Project in Cirkit DesignerESP32-Based Environmental Monitoring System with Ethernet Connectivity
This circuit features an ESP32 microcontroller interfaced with a W5500 Ethernet module for network connectivity, a DHT22 sensor for measuring temperature and humidity, and an Adafruit SHTC3 sensor for additional temperature and humidity readings. The ZMPT101B module is connected to the ESP32 for voltage measurement in an AC power line. The ESP32 manages data collection from the sensors and communicates with the Ethernet module, likely for data logging or remote monitoring purposes.
Open Project in Cirkit DesignerESP32 Smart Socket with Energy Monitoring and OLED Display
This circuit is a smart socket for energy monitoring, utilizing an ESP32 microcontroller to read voltage and current from ZMPT101B and ACS712 sensors. The readings are displayed on a 0.96" OLED screen, and a relay module is used to control a connected load, such as a bulb, remotely. The system is powered by a 220V AC source, converted to DC by an HLK-PM01 module.
Open Project in Cirkit DesignerExplore Projects Built with ZMPT101B
Arduino UNO and ZMPT101B-Based Voltage Sensor
This circuit uses an Arduino UNO to read the output from a ZMPT101B voltage sensor module. The ZMPT101B is powered by the Arduino's 5V and GND pins, and its output is connected to the Arduino's analog input pin A0 for voltage measurement.
Open Project in Cirkit DesignerESP32-Based Smart Power Monitoring System with Wi-Fi Connectivity
This circuit is designed to monitor and measure electrical parameters using an ESP32 microcontroller, a ZMPT101B voltage sensor, and a 5A current sensor. It includes visual indicators with red and green LEDs and an audible alert via a piezo buzzer, all controlled by the ESP32.
Open Project in Cirkit DesignerESP32-Based Environmental Monitoring System with Ethernet Connectivity
This circuit features an ESP32 microcontroller interfaced with a W5500 Ethernet module for network connectivity, a DHT22 sensor for measuring temperature and humidity, and an Adafruit SHTC3 sensor for additional temperature and humidity readings. The ZMPT101B module is connected to the ESP32 for voltage measurement in an AC power line. The ESP32 manages data collection from the sensors and communicates with the Ethernet module, likely for data logging or remote monitoring purposes.
Open Project in Cirkit DesignerESP32 Smart Socket with Energy Monitoring and OLED Display
This circuit is a smart socket for energy monitoring, utilizing an ESP32 microcontroller to read voltage and current from ZMPT101B and ACS712 sensors. The readings are displayed on a 0.96" OLED screen, and a relay module is used to control a connected load, such as a bulb, remotely. The system is powered by a 220V AC source, converted to DC by an HLK-PM01 module.
Open Project in Cirkit DesignerTechnical Specifications
Key Technical Details
- Voltage Sensing Range: 0-250V AC (primary voltage)
- Linear Range: 0-2V AC (output voltage)
- Precision: 1%
- Supply Voltage: 5V-30V DC
- Frequency Range: 50Hz-60Hz
- Phase Shift: < 5°
- Operating Temperature: -40°C to +70°C
Pin Configuration and Descriptions
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply (5V-30V DC) |
| 2 | GND | Ground |
| 3 | OUT | Analog voltage output proportional to AC |
Usage Instructions
Integration with a Circuit
To use the ZMPT101B module in a circuit, follow these steps:
- Connect the VCC pin to a DC power supply within the 5V-30V range.
- Connect the GND pin to the common ground in your circuit.
- Connect the OUT pin to an analog input on your microcontroller, such as an Arduino.
Calibration
Before using the ZMPT101B for precise measurements, it is essential to calibrate the module:
- Apply a known AC voltage to the input and measure the output voltage.
- Adjust the onboard potentiometer until the module's output matches the expected value.
- Record the calibration factor for use in your code.
Best Practices
- Ensure that the AC voltage does not exceed the module's maximum rating to avoid damage.
- Use a proper filter if the AC signal is noisy to improve measurement accuracy.
- Avoid placing the module near high-power equipment to prevent electromagnetic interference.
Example Code for Arduino UNO
// ZMPT101B voltage sensor example for Arduino UNO
const int zmptPin = A0; // Analog input pin connected to ZMPT101B OUT
float calibrationFactor = 0.5; // Replace with your calibration factor
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(zmptPin);
float voltage = sensorValue * (5.0 / 1023.0) * calibrationFactor;
Serial.print("AC Voltage: ");
Serial.print(voltage);
Serial.println(" V");
delay(1000);
}
Troubleshooting and FAQs
Common Issues
- Inaccurate Readings: Ensure the module is calibrated correctly. Adjust the onboard potentiometer if necessary.
- No Output: Check the power supply and wiring. Ensure the VCC and GND are correctly connected.
- Signal Noise: Implement a low-pass filter or move the module away from high-power devices.
FAQs
Q: Can the ZMPT101B be used for DC voltage measurements? A: No, the ZMPT101B is designed for AC voltage measurements only.
Q: What is the purpose of the onboard potentiometer? A: The potentiometer is used for calibration to ensure accurate voltage measurements.
Q: How can I increase the measurement resolution? A: Use an external ADC with higher resolution or implement oversampling with the Arduino's ADC.
For further assistance, consult the community forums or contact technical support.