Wireless Dust Sensor SDS011 and DHT22(AM2302) with Wemos OLED enclosure

prusaprinters

<p>Republished from my thingiverse: <a href="https://www.thingiverse.com/thing:3342804">https://www.thingiverse.com/thing:3342804</a></p> <p><strong>Links to the parts contain Banggood's affilate metadata.</strong></p> <h3>Intro</h3> <p>I needed a PM2.5/PM10 sensor during this winter season. I wanted to monitor more than one room and did not want to buy multiple expensive devices.</p> <p>This is an eclosure designed to fit 3 devices:</p> <ol> <li>an acurate dust sensor</li> <li>an Wemos ESP8266-based board with an OLED display</li> <li>a digital humidity and temperature sensor</li> </ol> <h3>Parts</h3> <ul> <li><p>Wemos NodeMCU with an OLED display<br/> The brain of this project. Provides processing, connectivity and instant data feed on the display.<br/> <a href="https://www.banggood.com/Wemos-Nodemcu-Wifi-For-Arduino-And-NodeMCU-ESP8266-0_96-Inch-OLED-Board-p-1154759.html?cur_warehouse=CN&amp;p=X314102609367201509L&amp;custlinkid=113882">Buy Wemos with a display</a></p> </li> <li><p>Nova SDS011<br/> The main sensor used to measure PM2.5 and PM10<br/> <a href="https://www.banggood.com/Nova-PM-Sensor-SDS011-High-Precision-Laser-PM2_5-Air-Quality-Detection-Sensor-Module-p-1144246.html?p=X314102609367201509L&amp;custlinkid=113881">Buy SDS011</a></p> </li> </ul> <ul> <li><p>DHT22 (AM2302)<br/> Additional sensor to measure humidity and temperature<br/> <a href="https://www.banggood.com/AM2302-DHT22-Temperature-And-Humidity-Sensor-Module-For-Arduino-SCM-p-937403.html?p=X314102609367201509L&amp;custlinkid=113883">Buy DHT22</a></p> </li> <li><p>Screws:<br/> 4x longer M3x20 screws to hold the main case plates together<br/> 4x shorter M3x8 screws to mount the Wemos board</p> </li> </ul> <h3>Assembly</h3> <ol> <li>Print the parts (I used 2 colors per part with <a href="https://www.prusaprinters.org/color-print/">ColorPrint</a>)</li> <li>Connect SDS011 to Wemos board</li> <li>Connect DHT22 to Wemos board</li> <li>Use 4x shorter screws to mount the Wemos board to the front plate</li> <li>Use the longer boards to keep front and back plate together</li> <li>Flash Wemos board with <a href="https://github.com/letscontrolit/ESPEasy">ESPEasy</a></li> <li>Configure devices in ESPeasy</li> </ol> <h3>Summary</h3> <p>When fully assembled, it should be compete with the retail products as:</p> <ul> <li><p><a href="https://www.banggood.com/Original-Xiaomi-Mijia-PM2_5-Detector-Air-Quality-Tester-Monitor-OLED-Smart-Sensor-Air-Purifier-p-1330361.html?p=X314102609367201509L&amp;custlinkid=113893">Xiaomi PM2.5 detector</a></p> </li> <li><p><a href="https://www.banggood.com/SNDWAY-SW-825-Digital-Air-Quality-Monitor-Laser-PM2_5-Detector-Gas-Temperature-Humidity-Monitor-p-1244753.html?p=X314102609367201509L&amp;custlinkid=113888">SNDWAY SW-825 Digital Air Quality Monitor</a></p> </li> </ul> <h3>Please feel free to propose improvements</h3> <p><a href="https://github.com/wojked/dust-sensor">https://github.com/wojked/dust-sensor</a></p>