0-25V Voltage Sensor Module for Arduino Projects
0-25V Voltage Sensor Module for Microcontrollers
This voltage sensor module allows you to measure DC voltages up to 25V using any microcontroller with an analog input. It employs a precision resistor voltage divider to scale the input down to a safe 0–5V range, making it ideal for battery monitoring, power supply testing, and data logging projects.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 0–25V DC |
| Output Voltage | 0–5V analog (proportional) |
| Divider Ratio | 5:1 |
| Resistor Tolerance | 1% |
| Interface | 3-pin (GND, S, VCC) |
| Dimensions | 28mm x 14mm |
What You Can Build With This
- Real-time battery voltage monitor for solar or automotive systems
- Data logger to track voltage fluctuations over time
- Simple DC power supply tester with Arduino display
- Overvoltage detection circuit with alarm or relay cutoff
Compatibility
Designed for 5V microcontrollers like Arduino Uno, Nano, and Mega. For 3.3V boards (ESP8266, ESP32), the measurable range is limited to 0–16.5V unless an additional voltage divider is used on the output. Always share a common ground between the measured circuit and the microcontroller.
Wiring Notes
Connect the module's GND pin to the microcontroller's GND, and the S (signal) pin to an analog input (e.g., A0). The VCC pin is typically unused in basic configurations. Attach the voltage source to the screw terminals, observing polarity. Use the formula Input Voltage = (analogRead() * 5.0 / 1023) * 5 for Arduino’s 10-bit ADC.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, it connects directly to any 5V Arduino board. Wire GND to GND and S to an analog pin; no extra components needed.
Can I measure voltages above 25V with this module?
No, exceeding 25V DC input may damage the module. For higher voltages, use an appropriately rated external voltage divider.
Does this module require an external power supply?
No, it is a passive circuit. It only needs the voltage to be measured and a common ground with your microcontroller.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items