LPG Gas Sensor MQ-6
A great, must have LPG gas sensor that senses LPG concentrations existing in the air. What’s mind blowing about it is that whether gas concentrations were from 200 to 10000ppm, it’s still going to be able to detect that. Also, note that the response time is fast and the sensitivity of it is high which makes the sensor more capable of giving you the results you truly want. The output is analog resistance and it doesn’t require much work. Follow the following steps and you’ll be just fine.
1. Power the heater coil with 5V
2. Add a load resistance
3. Connect the output to an ADC