Wiznet makers

Overview

This is weather station using WizFi360. It receive weather information from data.go.kr (see https://www.data.go.kr/data/15084084/openapi.do ) and display weather information to LCD display.

Running Video

Install

1. Install CircuitPython from https://github.com/ronpang/WizFi360-cpy
2. CircuitPy Drive will be created after installed CircuitPython.
3. Extract Source code(WizFi360-weather-station.zip) to CircuitPy Drive.
4. Extract Library(lib.zip) to CircuitPy Drive.

Config

1. Edit WiFi SSID/Wifi Password in secrets_example.py file.
2. Edit latitude, longitude in secrets_example.py file.
3. Save as secrets_example.py to secrets.py

Run

1. Install Thonny from https://thonny.org/
2. Choose menu Tools -> Options...
3. Click Interpreter Tab.
4. Set Interpreter to "CircuitPython (generic)".
5. Choose Port to connected serial port.
6. Open weather_station.py file in WizFi360-weather-station.
7. Run weather_station.py file.

Hardware environment

1. WizFi360-EVB-Pico.
2. LCD Display (ILI9341 3.2" SPI TFT): connected to WizFi360 SPI ports (http://www.lcdwiki.com/3.2inch_SPI_Module_ILI9341_SKU:MSP3218)

Software environment

1. CurcuitPython https://github.com/ronpang/WizFi360-cpy
2. Adafruit CircuitPython Bundle (https://github.com/adafruit/Adafruit_CircuitPython_Bundle)

• adafruit_ili9341: CircuitPython ILI9341 LCD Display low level driver
• displayio : various LCD support layer on CurcuitPython, supporting bitmap display (i.e. weather icon)
• adafruit_bitmap_font: bitmap font library displaying on LCD

Weather data sources

• https://www.data.go.kr/data/15084084/openapi.do :  KMA(Korea Meteorological Agency) short-term weather forcast

This open api provide wheather information. 

You must get service key from https://data.go.kr/data/15084084/openapi.do before getting the weather data.

Originally, openweathermap(https://openweathermap.org/) was selected to receive weather infomation. but openweathermap does not HTTPS respond on using WizFi360 + CircuitPython environment. So, KMA service is used getting weather information. You can use another wheather api if you can convert weather information to KMA format.

Wiring

Wiz360-EVB-Pico is fully compatible to Raspberry Pi Pico. So, wiring is the same as Raspberry Pi Pico and ILI9341 SPI Display.

Conclusion

WizFi360 provides excellent environment running CircuitPython.  Wi-Fi, HTTP Communication, LCD control through SPI works well. It enables to make lightweight but powerful IoT Device. I hope enhanced version will be released continuously.