Weather Station

Digital Weather Station

Reading environmental data is a staple in project-based learning. This project reads the ambient temperature and humidity and displays the data on a small screen.

• Components: Arduino board, DHT11,DHT22, or BME 280 sensor, 16x2 I2C LCD screen or small OLED display.

• The Build: Connect the DHT sensor to an analog or digital pin (depending on the module) and wire the display using the I2C protocol (SDA/SCL pins). Optional extensions include adding a Wifi module, and charting weather data on a webpage using Thingspeak.

• Learning Outcome: This introduces how to install and utilize external code libraries (like the DHT/BME 280 and LiquidCrystal_I2C libraries) to interface with more complex components and display human-readable data. The optional extension provides an introduction to Internet of Things(IOT) projects.

Costs:

• Arduino Nano                                                              ea $5.33 

• ESP-01 Wifi Module                                                       $3.00

• ESP-01 Breakout Board                                                $1.50

• DHT-11 or                                                                             $2.00

• BME 280                                                                                $6.00                  

• OLED Display                                                                      $3.00

• 220 ohm Resistors                                                            $1.00

• Half-Breadboard                                                         ea $1.26

• AMS-1117 5V Regulator                                         ea $0.50

• 9V Battery and Clip                                                    ea $3.00

• Barrel-Jack Adaptor                                                   ea $0.79

                                                                                                      $22.00