Design with Solar Panel Multimeter in Cirkit DesignerThe elejoy 400W MPPT Solar Photovoltaic Panel Multimeter (EL400B) is a versatile and efficient tool designed to monitor and optimize the performance of solar photovoltaic (PV) systems. This device integrates Maximum Power Point Tracking (MPPT) technology to ensure that solar panels operate at their peak efficiency. It measures key parameters such as voltage, current, power, and energy, providing real-time data to users for system diagnostics and optimization.
This circuit consists of two solar panels connected in series to an MPPT solar charge controller, which regulates the charging of a 12V 200Ah battery. A multimeter is integrated to monitor the voltage and current from the solar panels to the charge controller.
Open Project in Cirkit Designer
This circuit is a solar panel efficiency monitoring system using an Arduino UNO. It measures voltage, current, light intensity, and temperature using various sensors, and logs the data to an SD card for analysis.
Open Project in Cirkit Designer
This circuit is a solar panel efficiency monitoring system using an Arduino UNO. It measures voltage, current, light intensity, and temperature using various sensors (voltage sensor, ACS712 current sensor, LDR, and DS18B20 temperature sensor) and outputs the data to the serial monitor for analysis.
Open Project in Cirkit Designer
This circuit is a solar power monitoring and management system. It uses two solar panels connected to MAX471 sensors to measure current and voltage, with data processed by an Arduino UNO. The system also includes a solar charge controller to manage charging a 12V battery, and an ESP32 for additional processing or communication tasks.
Open Project in Cirkit DesignerThe following table outlines the key technical details of the elejoy EL400B:
| Parameter | Specification |
|---|---|
| Manufacturer | elejoy |
| Model Number | EL400B |
| Maximum Power Input | 400W |
| Voltage Range | 0V to 100V DC |
| Current Range | 0A to 20A DC |
| Power Measurement Range | 0W to 400W |
| Energy Measurement | 0kWh to 9999kWh |
| Accuracy | ±1% |
| Display Type | LCD with backlight |
| Operating Temperature | -10°C to 60°C |
| Dimensions | 120mm x 80mm x 25mm |
| Weight | 150g |
The elejoy EL400B features a simple terminal block for input and output connections. Below is the pin configuration:
| Pin | Label | Description |
|---|---|---|
| 1 | PV+ | Positive terminal for solar panel input |
| 2 | PV- | Negative terminal for solar panel input |
| 3 | LOAD+ | Positive terminal for load connection |
| 4 | LOAD- | Negative terminal for load connection |
PV+ pin and the negative terminal to the PV- pin.LOAD+ pin and the negative terminal to the LOAD- pin.The elejoy EL400B can be used alongside an Arduino UNO to log solar panel data. Below is an example code to read voltage and current values using analog inputs (assuming external sensors are used to interface with the multimeter):
// Arduino code to log solar panel voltage and current
// Ensure external sensors are used to interface with the multimeter
const int voltagePin = A0; // Analog pin for voltage sensor
const int currentPin = A1; // Analog pin for current sensor
void setup() {
Serial.begin(9600); // Initialize serial communication
Serial.println("Solar Panel Monitoring Started");
}
void loop() {
// Read voltage and current from sensors
int voltageRaw = analogRead(voltagePin);
int currentRaw = analogRead(currentPin);
// Convert raw values to actual voltage and current
float voltage = (voltageRaw / 1023.0) * 100.0; // Assuming 0-100V range
float current = (currentRaw / 1023.0) * 20.0; // Assuming 0-20A range
// Print values to the Serial Monitor
Serial.print("Voltage: ");
Serial.print(voltage);
Serial.print(" V, Current: ");
Serial.print(current);
Serial.println(" A");
delay(1000); // Wait for 1 second before next reading
}
No Display on the Multimeter:
Inaccurate Readings:
Overheating:
By following this documentation, users can effectively utilize the elejoy EL400B Solar Panel Multimeter to monitor and optimize their solar PV systems.