OK, challenge accepted<\/strong>!<\/p>\n\n\n\n I have designed a customised box for 3D printing<\/strong>simple and easy to print, no need for brackets or bridges<\/strong>.<\/p>\n\n\n\n The main ones in features and benefits <\/strong>of the box, are as follows:<\/p>\n\n\n\n The box is very easy to print, although, as it has a certain surface area, it can give problems with warping (lifting of the corners) depending on the printer and its settings. when printing with ABS<\/strong>.<\/p>\n\n\n\n I I have printed the prototype with PETG<\/strong>although could be done perfectly well with PLA<\/strong>.<\/p>\n\n\n\n In a way, the PLA would be better because it is more stable and the measurements are more accurate.<\/strong>. This is especially important for the NodeMCU pins (I had to rework the holes with a small drill bit).<\/p>\n\n\n\n The box does not bear any stress and is structurally robust<\/strong>The 10% can be printed with a 10% infill without any problem or risk of it being too flimsy.<\/p>\n\n\n\n The printing time, in my case, has been of approximately two hours<\/strong>. Depending on the printer, speed and desired quality, the printing time can vary considerably.<\/p>\n\n\n\n I have left the STL file for printing on Thingiverse. You can access it here<\/a>.<\/p>\n\n\n\n The back cover, which I have not yet designed, is missing.<\/strong>. This is a first version and I will probably make another version with some improvements I want to introduce, so I will take the opportunity to design the back cover already for the new version.<\/p>\n\n\n\n If I didn't make the new version, I would design the back cover for this one.<\/p>\n\n\n\n The video covers the basic details needed to connect the OLED display. For more information, I recommend viewing the article Connecting an SSD1306 OLED display to ESPEasy<\/a>.<\/p>\n\n\n\n For more information, see the article Connecting and controlling WS2812B LEDs to ESP8266 with ESPEasy<\/a>.<\/p>\n\n\n\n Both modules, MH-Z19 or Senseair S8, are compatible in terms of connections, so the connection will be identical.<\/p>\n\n\n\n Once we have made the connections, we have to configure ESPEasy<\/strong> to recognise the devices and include a few simple rules<\/strong> to behave the way we want them to behave.<\/p>\n\n\n\n Basically, we will have to do the following:<\/p>\n\n\n\n This article, which you are reading, is about the 3D printed box. It is assumed that you already have a working home CO2 Meter. If this is not the case, I recommend you to see the article of the homemade CO2 meter<\/a> and its video. Here you will find all the necessary details and a lot of useful information. <\/p>\n\n\n\n The connection of this display is very simple and is explained in detail in the video.<\/p>\n\n\n\n I will not repeat their configuration here, as in the article Connecting an SSD1306 OLED display to ESPEasy<\/a> you have very detailed instructions on how to connect the display and how to set it up with a very detailed video.<\/p>\n\n\n\n Connecting WS2812B LEDs to our board and using them with ESP Easy is child's play. Only three connections are required.<\/p>\n\n\n\n Its connection and use are explained in detail in the video below, so you should not encounter any problems.<\/p>\n\n\n\n I recommend you to see the article Connecting and controlling WS2812B LEDs to ESP8266 with ESPEasy<\/a> where you can find all the connection details, the rules you have to create, etc.<\/p>\n\n\n\n The box is prepared for the installation of a buzzer, In article Using a buzzer with ESPEasy<\/a> you have everything you need for connection and use.<\/p>\n\n\n\n Although the assembly is very simple, and is largely covered in the video of the assembly of the Homemade CO2 meter<\/em>I have created a video with all the details of how to assemble the meter in a box, with specific instructions for connecting and configuring the OLED display and LEDs<\/strong>.<\/p>\n\n\n\n In it you will find explanations, details and tips of all kinds<\/strong>.<\/p>\n\n\n\nFeatures<\/h2>\n\n\n\n
Print<\/h2>\n\n\n\n
Print file<\/h2>\n\n\n\n
Connections<\/h2>\n\n\n\n
Diagram showing the connections from the NodeMCU to the SSD1306 display. <\/h3>\n\n\n\n
![\"\"](\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/NodeMCU-SSD1306_bb-transp-1024x576.png\"){kind=spacer}
<\/a><\/figure>\n\n\n\nDiagram with connections from NodeMCU to WS2812 LEDs (Neopixel)<\/h3>\n\n\n\n
![\"\"](\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/NodeMCU-WS2812_bb-transp-1024x576.png\"){kind=spacer}
<\/a><\/figure>\n\n\n\nDiagram showing the connections of the NodeMCU to the MH-Z19 or Senseair S8 module.<\/h3>\n\n\n\n
![\"\"](\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/NodeMCU-Senseair-S8-LP_bb-transp-1024x576.png\"){kind=spacer}
<\/a><\/figure>\n\n\n\nESPEasy configuration<\/h2>\n\n\n\n
Add the MH-Z19B sensor to ESPEasy<\/h3>\n\n\n\n
Adding the SSD1316 display to ESPEasy<\/h3>\n\n\n\n
Add WS2812 LEDS to ESPEasy<\/h3>\n\n\n\n
Want to add a buzzer?<\/h3>\n\n\n\n
Step-by-step video tutorial<\/h2>\n\n\n\n