MQSensorsLib

This is a unified library to use sensors MQ: 2, 3, 4, 5, 6, 7, 8, 9, and 135.

Getting Started

MQsensorLib Sensor1(MQ4);
ppmMethano = Sensor1.readPPM();

Prerequisites

You'll need Arduino desftop app 1.8.9 or later.

Sensor manufacter:

Sensor	Manufacter	URL Datasheet
MQ-2	Pololulu	datasheet
MQ-3	Sparkfun	datasheet
MQ-4	Sparkfun	datasheet
MQ-5	parallax	datasheet
MQ-6	Sparkfun	datasheet
MQ-7	Sparkfun	datasheet
MQ-8	Sparkfun	datasheet
MQ-9	Haoyuelectronics	datasheet
MQ-131	Sensorsportal	datasheet
MQ-135	HANWEI Electronics	datasheet
MQ-303A	HANWEI Electronics	datasheet
MQ-309A	HANWEI Electronics	datasheet

Info of datasheets (Lineal analisis of Logarithmic rects)

Sensor	H2		LPG		CH4		CO		Alcohol		Propane		Benzine		Hexane		Smoke		Nox		CL2		O3		CO2		Tolueno		NH4		Acetona		Iso-butano		Hydrogeno		Ethanol
	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b	m	b
MQ-2 Pololulu	-2.2459	2.9845	-2.2879	2.7901	-2.6208	3.6075	-3.1157	4.5134	-2.7028	3.5595	-2.2879	2.7901
MQ-3 Sparkfun			-3.1851	4.7048	-17.531	28.785	-4.339	6.4432	-1.435	0.4103			-2.7009	0.632	-2.7268	3.6299
MQ-4 Sparkfun			-2.5818	3.6303	0.9873	2.6386	-5.5945	5.6693	-11.89	9.0375							-11.189	9.0375
MQ-5 Sparkfun	-4.368	2.9667	-2.5723	1.8943	-2.4438	2.3044	-4.8188	5.2023	-4.419	4.8044
MQ-6 Sparkfun	-3.6775	5.0286	-1.6567	2.8775	-1	3.301	-12.791	14.523	-5.8057	7.5292
MQ-7 Sparkfun	-1.329	1.8864	-7.8626	9.1056	-5.4878	8.8387	-1.4065	2.0162	-6.3219	9.924
MQ-8 Sparkfun	-0.7152	2.9891	-3.419	7.3513	-7.5609	15.243	-7.0753	15.396	-1.7459	4.7575
MQ9 - Haoyuelectronics			-2.2535	2.9855	-1.6012	3.1476	-1.749	2.827
MQ131- Sensorsportal																			-2.7245	3.3004	-1.0333	1.7117	-1.2037	1.6455
MQ135 - HANWEI							-2.7268	2.301	-2.8608	1.8627															-3.2819	1.9903	-5.7015	1.1612	-2.2119	2.0473	-5.9682	1.0175
MQ303A - HANWEI																																	-2.3543	1.144	-2.4338	0.7558	-2.5597	0.4436
MQ309A - HANWEI	-2.1311	3.0886			-1.6554	2.985	-4.7623	6.7413	-3.7686	5.6744

Installing

Clone this repositry into your desktop machine

git clone https://github.com/miguel5612/MQSensorsLib

Running the tests

Use calibration systems if you have several sensors that read the same gas.

Break down into end to end tests

These test can re-adjust values defined previously and you can contribute to improve conditions or features obtained from particular scenes.

testMassive.ino

And coding style tests

These tests may generate statistics validation using descriptive tools for cuantitative variables.

testStatics.ino

Built With

• Data sheets - Curves and behavior for each sensor, using logarithmic graphs.
• Main purpose - Every sensor has high sensibility for a specific gas or material.

Contributing

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

Authors

• Miguel A. Califa U. - GitHub - CV
• Ghiordy F. Contreras C. - GitHub - CV
• Mario A. Rodríguez O. - GitHub - CV
• Yersson Carrillo. - GitHub - CV

See also the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE.md file for details