Voltage Sensor Module DC 0-25V

Voltage Sensor Module DC 0-25V

The Voltage Sensor Module DC 0-25V is a compact and lightweight device that provides a convenient solution for monitoring DC voltages in the range of 0 to 25 volts. With its voltage detection range starting from 0.02445 volts, it offers precise measurements even for low-voltage signals.

This module utilizes a potential divider circuit, which reduces the input voltage by a factor of 5. This feature allows the module to interface with microcontrollers that have limited voltage-sensing capabilities. By connecting the module’s output interface, with the “+” terminal connected to a 5V or 3.3V power source and the “-” terminal connected to the ground (GND), and the “s” terminal connected to the analog-to-digital (AD) pins of an Arduino or similar microcontroller, the voltage can be accurately measured and monitored.

The compact dimensions of 28 x 14 x 13 mm and a weight of 4 grams make the Voltage Sensor Module suitable for integration into various electronic projects without occupying much space. It provides an analog output type, enabling continuous voltage readings.

Overall, the Voltage Sensor Module is a useful tool for extending the voltage sensing capabilities of microcontrollers, allowing them to monitor higher voltage ranges effectively and providing a reliable solution for voltage measurement in a compact form factor.

Specifications:

• Input Voltage range: DC0 to 25 V
• Voltage Detection Range: DC 0.02445 V to 25 V
• Analog Voltage Resolution: 0.00489 V
• Output Type: Analog
• Output Interface: “+ ” connected 5/3.3V, “-” connected GND, “s” connected Arduino AD pins
• DC input interface: red terminal positive with VCC, negative with GND
• Dimensions: 28 x 14 x 13 mm .
• Weight: 4 gm.

Voltage Sensor Module Pinout

The voltage sensor module has 5 pins, 2 on the front side and 3 on the backside.

• VCC: Positive terminal of the External voltage source (0-25V)
• GND: Negative terminal of the External voltage source
• S: Analog pin connected to Analog pin of the microcontroller
• +: Not Connected

1. -: Ground Pin connected to GND of microcontroller

Voltage Sensor Module Design & Construction

The Voltage Sensor is basically a Voltage Divider consisting of two resistors with resistances of 30KΩ and 7.5KΩ i.e. a 5 to 1 voltage divider. Hence the output voltage is reduced by a factor of 5 for any input voltage. The internal circuit diagram of the Voltage Sensor Module is given below.

The Arduino analog input pin accepts voltages up to 5V. Hence you can use this module easily with Arduino. If the controller has 3.3V systems, the input voltage should not be greater than 3.3Vx5=16.5V.

Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of the input voltage detection module is 0.00489Vx5=0.02445V.

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