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No gas → ~1.5V, High gas → ~3.5V.
void loop() int sensorValue = analogRead(A0); float voltage = sensorValue * (5.0 / 1023.0); Serial.print("Gas Voltage: "); Serial.println(voltage);
Offers a dedicated MQ135 library including simulation HEX files The Electronics .
The MQ135 library for Proteus is a highly useful educational and prototyping tool. For engineering students and developers working on air quality monitoring systems, this library bridges the gap between hardware complexity and software simulation. The recent updates (upd) have significantly improved its stability, making it a reliable addition to the Proteus design suite. mq135 gas sensor library for proteus download upd work
To ensure the library works correctly during runtime, connect the sensor to a microcontroller like an Arduino Uno within your schematic.
How to Use the MQ135 Sensor in a Simulation (Example: Arduino)
If "MQ135" does not appear in the Pick Devices menu, the files were likely pasted into the wrong directory. Double-check if your version of Proteus stores libraries in the ProgramData path instead of Program Files (x86) . No gas → ~1
If Proteus is running, close it and open it again to refresh the components list.
is a hidden folder; enable "Hidden Items" in Windows View settings). : Navigate to
Navigate to C:\ProgramData\Labcenter Electronics\Proteus 8 Professional\LIBRARY . Note: ProgramData is a hidden folder ; you may need to enable "Hidden Items" in Windows View settings. For engineering students and developers working on air
Simulation is the backbone of modern electronics design. Before soldering a single component, engineers rely on software like Proteus Design Suite to test circuits, debug code, and predict behavior. However, one of the biggest hurdles for hobbyists and professionals alike is the lack of ready-to-use simulation models for specific sensors.
C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\LIBRARY Restart Proteus