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 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
Usually a 3-pin device (VCC, GND, Output) that toggles the signal pin high or low based on input voltage (demonstrated in this video). 3. Power Monitoring Modules (INA219)
Finding the right library file is the crucial first step. Here are your best bets:
Proteus lacks a single "Voltage Sensor" in its default library, but it offers multiple alternatives.
// Calculate input voltage using divider formula vin = vout / (R2 / (R1 + R2));
Locate the LIBRARY folder in your Proteus installation directory (usually found under C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\Data\LIBRARY ).
Search for keywords like "Voltage", "Sensor", or specific model numbers like "INA219" or "MC34064".
If you don’t want external libraries, use these native Proteus components:
void setup() Serial.begin(9600);
Unlike some obscure sensors that require downloading external .LIB files, a basic voltage measurement module is included in the standard Proteus library.
Place a DC Voltmeter across the input voltage source and another across R2 to monitor the simulation in real time.
: Obtain the library files from reputable sources like The Engineering Projects or GitHub repositories such as proteus-lib . Installation : Copy the .LIB and .IDX files.