I wondering is it possible can I equip three analog gas sensors to the Rover V2 to detect carbon monoxide, methane, O2 gases? Also how do I go about righting the code for the robot to detect those gases ?? Can someone please help thank you.
You can certainly add sensors. Most of these gas sensors provide 0-5V analog output, so you just need to read a bit about writing code for analog sensors.
If you want an easy way to connect the 3-pin sensor to the DFRobotShop Rover, we suggest an I/O shield:
Ex: robotshop.com/en/dfrobot-io- … no-v7.html (many different IO shields available).
robotshop.com/en/gas-sensors.html (gas sensors)
arduino.cc/en/Tutorial/AnalogInput (you don’t need to go through the wiring if you have an IO shield).