Seeed Grove Manual
Gas sensor
Hide thumbs
Also See for Grove:
- Manual (29 pages) ,
- User manual (14 pages) ,
- Quick start manual (12 pages)
Subscribe to Our Youtube Channel
Related Manuals for Seeed Grove
Summary of Contents for Seeed Grove
- Page 1 Grove - Gas Sensor(MQ9) Release date： 9/20/2015 Version： Wiki: http://www.seeedstudio.com/wiki/Grove_-_Gas_Sensor(MQ9) Bazaar: http://www.seeedstudio.com/depot/Grove-Gas-SensorMQ9-p-1419.html...
- Page 2 Document Revision History Revision Date Author Description Sep 21, 2015 Victor.He Create file...
-
Page 3: Table Of Contents
Contents Document Revision History · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 1. - Page 4 Under the supervision of Seeed Technology Inc., this manual has been compiled and published which covered the latest product description and specification. The content of this manual is subject to change without notice.
-
Page 5: Introduction
1. Introduction The Grove - Gas Sensor (MQ9) module is useful for gas leakage detecting (in home and industry). It can detect LPG, CO, and CH4. Based on its fast response time. Measurements can be taken as soon as possible. Also the sensitivity can be adjusted by the potentiometer. -
Page 6: Features
2. Features Wide detecting scope Stable and long life Fast response and High sensitivity... -
Page 7: Application Ideas
3. Application Ideas Gas leakage detecting Toys... -
Page 8: Mechanic Dimensions
4. Mechanic Dimensions Electronic Characteristics Items Parameter name Type Unit System Characteristics Working Voltage Heating consumption Load resistance can adjust 33Ω±5% Ω Heater resistance Ω Sensing Resistance 20000 CO/CH4/LPG Scope Detecting 1000/10000/10000 concentration... -
Page 9: Usage
How to choose a Gas Sensor What's LEL Hardware Installation Grove products have an ecosystem and all have a same connector which can plug onto the Base Shield. Connect this module to the A0 port of Base Shield, however, you can also connect Gas sensor to Arduino without Base Shield by jumper wires. -
Page 10: How To Use
How to use There're two steps you need to do before getting the concentration of gas. First, connect the module with Grove Shield using A0 like the picture above. And put the sensor in a clear air and use the program below. - Page 11 to replace the R0 below with value of R0 tested above void setup() { Serial.begin(9600); void loop() { float sensor_volt; float RS_gas; // Get value of RS in a GAS float ratio; // Get ratio RS_GAS/RS_air sensorValue = analogRead(A0); sensor_volt=(float)sensorValue/1024*5.0; RS_gas = (5.0-sensor_volt)/sensor_volt;...
- Page 12 According to the figure, we can see that the minimum concentration we can test is 200ppm and the maximum is 10000ppm, in a other word, we can get a concentration of gas between 0.02% and 1%. However, we can't provide a formula because the relation between ratio and concentration is nonlinear.
-
Page 13: Support
6. Support Ask questions on Seeed forum. -
Page 14: Version Tracker
7. Version Tracker Revision Descriptions Release v0.9b Initial public release 16,Aug,2011 v1.4 Replace some components 27,Aug,2014... -
Page 15: Resources
8. Resources File:Gas Sensor Eagle files.zip File:Gas Sensor Schematic.pdf File:MQ-9.pdf... -
Page 16: Licensing
9. Licensing This documentation is licensed under the Creative Commons Attribution-ShareAlike License Source code and libraries are licensed under GPL/LGPL, see source code files for details.
Need help?
Do you have a question about the Grove and is the answer not in the manual?
Questions and answers