Case for WEMOS D1 mini & DHT 22 sensor (ESP8266)

thingiverse

My wireless temperature and humidity sensor required a case to shield it from the elements. I designed and printed this custom enclosure for the sensor using a Wemos D1 mini board (a clone will also work) and a DHT22 module. The DHT22 module, thanks to its built-in sensors, can detect the surrounding environment's temperature and humidity levels, and transmit this data to the Wemos board. The Wemos board then sends these readings to a PC or smartphone via Wi-Fi. In this project, I used code inside the sketch (a custom program) to send the sensor data to a web platform (www.thingspeak.com). This data is displayed through interactive graphics on the platform. Additionally, users can view real-time data on any connected network device since the Wemos board acts as a web-server. Here's my Thingspeak channel where I'm sending the data: https://thingspeak.com/channels/867219 To recreate this project, you'll need: * A Wemos D1 mini clone based on the ESP8266 chip * A DHT 22 sensor module for temperature and humidity readings You can download the Arduino code and library from these links: * The arduino sketch: https://mega.nz/folder/5xNTyIzC#M9TTcUxb8Wu45iBey7yj3w * The ESPAsyncWiFiManager library: https://github.com/alanswx/ESPAsyncWiFiManager To set up the software, follow these steps: 1. Register for a free account on Thingspeak (www.thingspeak.com). 2. Download the Arduino code from the link above. 3. Open the secret.h file in the Arduino IDE and update the Channel ID and Write Key values with your Thingspeak channel's details. This project also uses the Wemos board as a web-server, which requires creating custom web pages to act as an interface. These web pages need to be loaded into the SPIFFS of the ESP8266 using the ESP8266 Sketch Data Upload plugin (https://github.com/esp8266/arduino-esp8266fs-plugin). When you start your ESP, it sets up in Station mode and tries to connect to a previously saved network. If this fails, it moves into Access Point mode and starts a web-server on IP address 192.168.4.1. Using any Wi-Fi enabled device with a browser, connect to the newly created Access Point (ESP8266 AP Wifi). You'll be redirected to a Captive Portal where you can configure your network settings. Choose one of the scanned networks, enter the password, and save. The ESP will then try to connect; if successful, it relinquishes control back to your app. On the Settings page, you can find various values such as IP address, ID name, Wi-Fi network name, RSSI (signal strength), and other card data. In the File Manager section, you have access to the SPIFFS image and can update Html files or upload new ones. Stay tuned for updates!