The MQ135 simulation model requires a few extra steps to work properly during an active simulation run: 1. Link the Hex/VHDL File (If Applicable)
: Ideal for smart home safety systems or industrial gas leakage detection. How to Download and Install the Library
This is often faster than debugging broken MQ135 models.
Press 'P' in Proteus, type "MQ135", and select the sensor. Wiring: Connect VCC to +5Vpositive 5 cap V Connect GND to Ground. Connect AO to Arduino Analog Pin A0. mq135 gas sensor library for proteus download upd work
This guide provides an updated, comprehensive guide to finding the What is the MQ135 Sensor and Why Use Proteus?
Connect to a digital pin if you are using threshold detection. VCC: Connect to +5Vpositive 5 cap V GND: Connect to Ground. Tips for Successful Simulation in 2026
To simulate the MQ135 gas sensor in Proteus, you'll need to download and install a library that models the sensor's behavior. Unfortunately, Proteus doesn't have a built-in library for the MQ135 sensor. However, you can create a custom library or use a third-party library. The MQ135 simulation model requires a few extra
Create a fresh schematic workspace in Proteus.
Compile your code and upload the generated .hex file into your microcontroller property settings in Proteus.
After downloading the .zip or .rar archive, extract it to find these three essential files: (Library file) MQ135.IDX (Index file) Press 'P' in Proteus, type "MQ135", and select the sensor
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) .
Disclaimer: The libraries linked are provided by the community for simulation purposes. If you have trouble setting up, I can: for the simulation Help with troubleshooting the "Component not found" error Recommend other air quality sensors available in Proteus Share public link
Open Proteus, go to Component Mode (P) , and search for "MQ135". Select it and place it on your workspace.
: If the software was open, close and reopen it to refresh the component database. ⚡ How to Use the Sensor in Simulation