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Miguel Angel Califa Urquiza 2020-04-02 09:51:43 -05:00 committed by GitHub
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@ -42,6 +42,10 @@ float ppmCH4 = MQ4.readSensor();
* RL Value in KOhms
##### Graph
![Wiring_MQSensor](https://raw.githubusercontent.com/miguel5612/MQSensorsLib_Docs/master/static/img/Points_explanation.jpeg)
#### RS/R0 value (From datasheet of your sensor)
* RS (Clean air - English) -> (Aire puro - Spanish)
* **Note**: RS/R0 is equal to Ratio variable on the program
![Graph from datasheet](https://raw.githubusercontent.com/miguel5612/MQSensorsLib_Docs/master/static/img/Graph_Explanation.jpeg)
### Arduino
![Arduino_Wiring_MQSensor](https://raw.githubusercontent.com/miguel5612/MQSensorsLib_Docs/master/static/img/MQ_Arduino.PNG)
@ -55,6 +59,29 @@ float ppmCH4 = MQ4.readSensor();
[Excel_Help_Spreadsheet (Fill only Volaje Between RL - RS - RL Values)](https://drive.google.com/open?id=1MKDcudQ7BHL_vLGi-lgPh9-pblvygRMq)
### Serial debug (optional)
If your sensor is an **MQ2** (Same for others sensors):
* To enable on setup wrote
```
MQ2.serialDebug(true);
```
* And on Loop Wrote
```
MQ2.serialDebug();
```
* Result:
![Serial debug output](https://github.com/miguel5612/MQSensorsLib_Docs/blob/master/static/img/Serial_Mon_Explanation.jpeg?raw=true)
**Note**:
* ![#c5f015](https://placehold.it/15/c5f015/000000?text=+) `Yellow -> Calibration status.`
* ![#008000](https://placehold.it/15/008000/000000?text=+) `Green -> Hardware and software characteristics.`
* ![#f03c15](https://placehold.it/15/f03c15/000000?text=+) `Red -> Headers of the library calculations.`
* Only valid for **1** gas sensor readings.
**Usage**
* Quick troubleshooting, since it shows everything the library does and the results of the calculations in each function.
### Prerequisites
You'll need Arduino desktop app 1.8.9 or later.