Navigate to the folder where Proteus is installed on your computer.
No gas → ~1.5V, High gas → ~3.5V.
Note: If you cannot see the "Data" folder, enable "Hidden items" in your Windows File Explorer view settings. Copy both the .LIB and .IDX files you extracted in Step 1. Paste these files directly into the folder. Step 3: Verify the Component in Proteus mq135 gas sensor library for proteus download upd work
After installation, you must configure the sensor's internal code to make the simulation "work" and respond to inputs. MQ135 Gas Sensor Simulation in proteus - The Electronics
Click the button at the bottom left of the Proteus interface to start the simulation. Adjust the potentiometer connected to the Test Pin. Navigate to the folder where Proteus is installed
To understand why the UPD is necessary, you need to know the three critical files that make a custom part work:
C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\LIBRARY Step 3: Copy and Paste the Files Copy both the
Arduino Uno, MQ135 Sensor, LCD16x2 Display, Potentiometer (to simulate analog input changes). Connections: MQ135 AO → Arduino A0 MQ135 VCC → +5V MQ135 GND → GND Code (Simple Analog Read):
C:\Program Files (x23)\Labcenter Electronics\Proteus 7 Professional\LIBRARY Step 3: Restart Proteus
