Hi all
Can anyone explain to me the second sketch in the page https://wiki.seeedstudio.com/Grove-Gas_Sensor-MQ2/ ?
I cannot understand the meaning of RS_air, R0, RL just to begin with…
I have tried the sketch and I got R0=-0.1… is it possible a negative number
Thanks
Hi @Lucky.Luka
You may want to check here for reference: https://jayconsystems.com/blog/understanding-a-gas-sensor
Best Regards!