CO2, temperature and humidity sensor NodeMCU ESP8266.
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This is a long time that i wanted to do a efficient object to measure the CO2. with it i can control the quality of room. I have used a reliable sensor, the MH-Z19B senor on a object connected. It can be easly connected at my data base. I have used it in my greenhouse before to use defenitely cards. It allow to measure the CO2, temperature and humidity. It is necessary to use a 5 volts power supply. it have a screen OLED, it have also a web page integrate to access at information. This is really a useful object for a house. I work with it from more than one year, i am very satisfied of this sensor. They are the drawings and code on my Github account: https://github.com/InnoGreenTech/CO2-DHT22-ESP-sensor .
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1-The wifi setting parameters and web interface 2-The component used 3-The drawing and the PCB 4-The box of sensor
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1-The wifi setting parameter and web interface: When you connect the item, it is going to try to log in at wireless network registered. If it can do it, it will open a SSID gate. You need to connect at this SSID InnoGreenTech, after you must to open a portal with your explorer at the address http://192.168.4.1. You can fill in the form to inform your WIFI parameters.
After to restart the object, you can connect at it through the address write on the screen. You can found the current values of the sensors. You can also change the mode of work of the MH-Z19B, automatic mode or manual mode. I advice to you to keep the default mode, automatic mode.
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2-The components used:
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3-Le schéma et le PCB:
Pas de difficultés particulières dans ce schéma, il n'y a pas de connexions extérieures, tout est intégré dans l'objet. Pour facilité le montage, la facade peut être retirée. De même pour le PCB qui est à graver sur une plaque simple cuivre.
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2-Le boitier du capteur: Comme à mon habitude je réalise mes boîtiers avec l'aide de mon imprimante 3D. Ici, pensant qu'il serait utilisé exclusivement en intérieur, je l'ai imprimé en PLA. J'avoue que depuis il c'est beaucoup déformé dans la serre (humidité + fortes chaleurs). Les plans sont sur mon compte Github https://github.com/InnoGreenTech/Solar-connected-greenhouse
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fgJ'espére que cet article vous aura, je vous attends sur le Forum pour en discuter ;-) |