Vout=Vin×R2R1+R2cap V sub o u t end-sub equals cap V sub i n end-sub cross the fraction with numerator cap R 2 and denominator cap R 1 plus cap R 2 end-fraction
Use the following logic in your Arduino IDE:
Most hobbyists use the or the "New Sensors Library for Proteus" created by third-party developers like The Engineering Projects. Steps to Install: voltage sensor proteus library
Press 'P' in Proteus and search for "RES", "ARDUINO", and "POT-HG" (to simulate varying input voltage).
float vout = 0.0; float vin = 0.0; float R1 = 30000.0; float R2 = 7500.0; int value = analogRead(A0); vout = (value * 5.0) / 1024.0; vin = vout / (R2 / (R1 + R2)); Use code with caution. Vout=Vin×R2R1+R2cap V sub o u t end-sub equals
Hit the "Play" button. Adjust the input voltage and watch the Virtual Terminal update with the real-time voltage reading. Troubleshooting Common Issues
Search for "Voltage Sensor Proteus Library zip" from a trusted engineering blog. Extract: You will usually find two files: .LIB and .IDX . Hit the "Play" button
If the simulation runs slowly, remove unnecessary "Animation" effects from the component properties. Conclusion
If you don't want to install external files, you can create a highly accurate voltage sensor using the method. This is exactly how physical 0-25V voltage sensor modules work. Components Needed: Resistor R1 (30kΩ) Resistor R2 (7.5kΩ) DC Voltage Source (The source you want to measure) Arduino Uno (or any MCU) DC Voltmeter (For visual verification) The Circuit Logic: The output voltage ( Voutcap V sub o u t end-sub ) is calculated as:
