: Open Proteus, go to Component Mode , and click Pick from Library (P). Search for "MQ135" to find the sensor. Configure the Model : Place the sensor on your canvas. Right-click and select Edit Properties .
Go to Library → Library Manager → Check for Duplicates . Sometimes an older MQ135 model causes a conflict. Delete the older one and restart.
If you encounter any issues while using the MQ135 gas sensor library for Proteus, here are some troubleshooting tips: Mq135 Gas Sensor Library For Proteus Download -UPD-
Move the downloaded .LIB and .IDX files into this folder.
Note: The Proteus model automatically includes the internal heater. You do not need an external transistor. : Open Proteus, go to Component Mode ,
The MQ135 gas sensor is a vital tool for monitoring air quality, detecting gases like ammonia, nitrogen oxides, alcohol, aromatic compounds, sulfide, and smoke. While hardware implementation is straightforward, simulating this sensor in Proteus requires a dedicated library since it isn't included in the software's default component list. Why Use the MQ135 Library for Proteus?
No. This version is optimized for Proteus 8.6 and above. Use an older library for Proteus 7. Right-click and select Edit Properties
Absolutely. The analog output works with any microcontroller's ADC – AVR, PIC, 8051, or ARM.
Some engineering forums (The Engineering Projects, Microcontrollers Lab) provide a custom MQ135 library package containing:
If you are working on an air quality monitoring project, an IoT-based pollution detector, or a simple CO2 sensing circuit, the is likely your go-to component. But before you solder a single wire or write a line of embedded C code, you need to simulate your design. And for that, you need the MQ135 Gas Sensor Library for Proteus .
You can find these files through community-developed repositories such as The Electronics or GitHub .