Real-world sensors react to gas. In Proteus, the sensor usually has a "Test Pin" . Connect a Potentiometer (POT-HG) to this pin.
Since Proteus doesn't come with gas sensors pre-installed, follow these steps to find the "UPD Work" (Updated/Working) files: mq135 gas sensor library for proteus download upd work
If you had Proteus open, close it and restart it to refresh the component database. Simulating the MQ135 in Proteus To create your circuit, follow these steps: Real-world sensors react to gas
Some advanced MQ135 models in Proteus require you to right-click the sensor, go to "Edit Properties," and attach a specific .HEX file provided with the download. Conclusion Since Proteus doesn't come with gas sensors pre-installed,
Ensure the package includes two essential file types: .LIB (Library file) .IDX (Index file) Step-by-Step Installation Guide
Copy the .LIB and .IDX files from your download and paste them directly into the folder identified above. 3. Restart Proteus