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Arduino Clock and Weather Station

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This project will include everything to create a weather station for your home.

Status: Ready, There is a STL case file, but no back lid YET.

Features:

  • Basic clock
  • Shows temperature and humidity
  • Show AQI, eCO2, and EtOH
  • Able to predict weather change based on pressure change.
  • Color display

Components:

  1. Arduino Nano
  2. 128 x 160 TFT LCD Screen (ST7735)
  3. DS3231
  4. BME280
  5. ENS160 + AHT21
  6. Type C power connector

Instructions:

  1. Connect modules to arduino:

BME280

VIN → 5V

GND → GND

SCL → A5

SDA → A4

ENS160

VIN → 5V

GND → GND

SCL → A5

SDA → A4

TFT DISPLAY

VCC → 5V

GND → GND

SCL → D13

SDA → D11

RES → D8

DC → D9

CS → D10

DS3231

VCC → 5V

GND → GND

SCL → A5

SDA A4

  1. Download these libraries:

    • RTClib
    • Adafruit_GFX
    • Adafruit_ST7735
    • GyverBME280
    • SparkFun_ENS160
    • Forecaster

  2. Upload the code

  3. Done!

How to use?

  • Time section: Displays time and date
  • Temperature and humidity section: Displays current temperature in Celsius. Humidity is displayed in light blue text with the percentage
  • The AQI section displays the current AQI (1—lowest, the best | 5—highest, the worst). It also shows the current Co2 and EtOh concentrations in ppm.
  • Rain prediction section: It actually displays the percentage of weather getting worse (0 to 100%). If it stays below ~20%, weather probably won't change. It uses BME280's pressure and Zambretti algorithm to predict. Please allow at least 3 hours after the powering to get accurate results. Note that data won't be saved after the powering off.