0-25V DC Voltage Sensor Module
The voltage sensor module is a small size 0-25 DC voltage sensing device. The design of the module is based on a resistive voltage divider circuit. It is a voltage sensor module that reduces the input voltage signal by a factor of 5 and generates a corresponding analog output voltage concerning step down voltage factor. This voltage measurement circuit is small and portable and can be used to detect under and over-voltage faults in electrical circuits.
Voltage Sensor Module Pinout Configuration
| Pin Name | Description |
| Vin | The positive terminal of the External voltage source (0-25V) |
| GND | The negative terminal of the External voltage source |
| Vout | Analog pin connected to Analog pin of Arduino |
| NC | Not Connected |
| – | Ground Pin connected to GND of Arduino |
Voltage Detection Sensor Module Features & Specifications
- Input Voltage: 0 to 25V
- Voltage Detection Range: 0.02445 to 25
- Analog Voltage Resolution: 0.00489V
- Needs no external components
- Easy to use with Microcontrollers
- Small, cheap, and easily available
- Dimensions: 25 × 13 × 13 mm
Brief about Voltage Sensor Module
The voltage Detection Sensor Module is a simple and very useful module that uses a potential divider to reduce any input voltage by a factor of 5. This allows us to use the Analog input pin of a microcontroller to monitor voltages higher than it capable of sensing. For example, with a 0V – 5V Analog input range, you can measure a voltage up to 25V. This module also includes convenient screw terminals for easy and secure connections of a wire.
The internal circuit diagram of the Voltage Sensor Module is given below.
The voltage circuit consists of a voltage divider circuit of two resistors in which R1 is 30K and R2 is 7.5K.
How to Use Voltage Sensor Module with Arduino
Interfacing a voltage sensor with Arduino or any other microcontroller is pretty straightforward. Connect the VCC and GND of the voltage source whose voltage is to be measured to the screw terminals of the voltage sensor. Connect the S and – (GND) pins of the voltage sensor to the Analog pin and GND of Arduino respectively.
Input and output voltage can be calculated using:
Vin = Vout * (R2/(R1+R2)) Here R1 = 30K ohm and R2 = 7.5K ohm Vout = (analogvalue * 5 / 1024).
