# HomeyDuino CO2 sensor

**URL:** <https://community.homey.app/t/homeyduino-co2-sensor/20410>\
**Category:** Devices\
**Created:** [November 8, 2019, 4:27pm UTC](https://community.homey.app/t/homeyduino-co2-sensor/20410 "2019-11-08T16:27:45Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Lars\_Machiels](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/lars_machiels/32/10295_2.png) [@Lars\_Machiels](https://community.homey.app/u/Lars_Machiels)\
**Post date:** [January 2, 2020, 7:29am UTC](https://community.homey.app/t/homeyduino-co2-sensor/20410/8 "2020-01-02T07:29:32Z")

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![DSC_3354](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/1/61947f2ae74be9e63199576fd8c507ce672d2855.jpeg)  
Just finished my second version. This time in a 3D printed enclosure and a Bosch BME680 (with official Bosch library). So now I can read CO2/Temp/Humidity/Pressure/VOC/IAQ. The BME680 can also act as a smoke detector. I tried it with setting a piece of paper on fire. The IAQ readings immediately went up to over 400 (range 0-500),

 ![DSC_3375](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/f/7fd18cfaa3d85d02cdcba85e864d5e832fa05592.jpeg)  
One can do the (WiFi) setup via a WiFi access point to fill in the parameters for WiFi/Homey and a MQTT client. Still need to calibrate the CO2 sensor by the way.

 ![DSC_3369](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/2/62746823f46e58c09807f6235a0caa034c628468.jpeg) !  
[2020\_01\_02\_08.10.22|237x500](https://community.homey.app/uploads/short-url/13642jUx4SAw2mM2YHH4hJyTRe6.jpeg)  
 ![2020_01_02_08.10.22](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/7/075bd1d8ae37682ee5c1d0b2248f0558f54e5a46.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/1/719b2ad6300fcf1b321d19c23b0fd305ef8bffd7.png)

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