Voltage Sensor Module
$0.561pcs
This module is designed based on the principle of resistance voltage division, which can reduce the input voltage of the terminal interface by 5 times. The maximum analog input voltage is 5V.
| Dimensions | 27 × 14 × 10.6 mm |
|---|---|
| Brand |
easyelecmodule |
4557 in stock
Product Introduction
This module is designed based on the principle of resistance voltage division, which can reduce the input voltage of the terminal interface by 5 times. The maximum analog input voltage is 5V. Due to the use of an AVR chip, the analog resolution of the module is 0.00489V, and the minimum input voltage that can be detected by the voltage detection module is 0.02445V.
Product Showing
Wiring Description
| Wiring | Description |
|---|---|
| S | A1 |
| + | 3.3V |
| − | GND |
| VCC | Measured Voltage Positive Terminal <25V |
| GND | Measured Voltage Negative Terminal |
Precaution
ADC acquisition requires code calibration. Because the hardware has inherent errors such as offset and gain, there are individual differences due to process influences. The reference voltage fluctuations of the external circuit and the tolerances of the voltage divider elements introduce system deviations. Changes in environmental temperature can also cause errors.
Product Parameter
| Item | Description |
|---|---|
| Voltage Input Range | DC 0–25V |
| Voltage Analog Resolution | 0.00489V |
| DC Input Interface | The positive terminal connects to VCC, and the negative terminal connects to GND. |
| Output Interface | “+” connects to 5/3.3V, “-” connects to GND, and “S” connects to the AD pin. |
Arduino Code
#include <Wire.h>
// Variables
int sensorValue;
float voltage;
void setup() {
// Initialize serial communication
Serial.begin(9600);
Serial.println("Voltage Monitoring System - A1 pin input");
Serial.println("---------------------------");
}
void loop() {
// Read analog value from A1 pin (0-1023)
sensorValue = analogRead(A1);
// Calculate actual voltage (assume 5x voltage divider, 5V reference)
voltage = sensorValue * (5.0 / 1023.0) * 5.0;
// Print full voltage value (2 decimal places)
Serial.print("A1 pin voltage: ");
Serial.print(voltage, 2);
Serial.println(" V");
// Delay 1 second
delay(1000);
}
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
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