# Arduino weather station

This is a simple weather station based on Arduino Uno R3 and a TE Connectivity's weather hat.

## Hardware
- Arduino Uno R3
- TE Connectivity's weather hat
- 16x2 LCD display (optional)
- Raspberry Pi or any other SBC

## Software
This project has a couple of library dependencies:

#### Arduino
- [ArduinoJson](https://github.com/bblanchon/ArduinoJson)
- [TEWeatherShield](https://github.com/TEConnectivity/Weather_Shield_Arduino_Library)
- [LiquidCrystal_I2C](https://github.com/marcoschwartz/LiquidCrystal_I2C)

#### Raspberry Pi
- **WireGuard** (optional, used to link a remote Home Assistant instance)
- **systemd** (used to prepare the environment on the Home Assistant instance)
- **ser2net** (used to expose the serial port to the Home Assistant instance)

## Installation
1. Flash the Arduino with the `vremenska-postaja.ino` sketch or flash the included `build/vremenska-postaja.ino.hex` binary.

2. Set up **ser2net** on the Raspberry Pi. The configuration file is located in `ser2net.conf`. The default port is `2000`.

3. Set up **WireGuard** and link the Raspberry Pi to a remote Home Assistant instance. (Optional!)

4. Set up **socat-remote** service on the Home Assistant instance. The service file is located in `socat-remote.service`.

5. Add the `weather_station` platform to your Home Assistant instance. The configuration file is located in `configuration.yaml`.