ESP8266 Weather Station

That project is another version of my esp32 weather station, using here an esp8266 and a TFT screen to display multiple locations.

Hardware

• esp8266
• ILI9341 TFT screen compatible 3.3V

The ILI9341 TFT display is connected to the esp8266 board as follows:

• CS pin is connected to D2 (GPIO4),
• RST pin is connected to D3 (GPIO0),
• D/C pin is connected to D4 (GPIO2),
• MOSI pin is connected to D7 (GPIO13),
• SCK pin is connected to D5 (GPIO14),
• VCC and BL are connected to pin 3V3,
• GND is connected to pin GND of the esp8266

Connections to flash esp8266 (if not using NodeMCU)

• VCC to 3.3
• Ground to ground
• RX from FTDI to TX on ESP
• TX from FTDI to RX on ESP
• DTR from FTDI to GPIO 0 on ESP
• RST from FTDI to RESET on ESP

Arduino env

Copy parameters.h.dist to parameters.h and update it with your wifi settings and update the locations array (you need to change lat/lng and set your OpenWeatherMap API token).

Weather API

• https://openweathermap.org/api/one-call-api
• create an account and an API KEY

Icons

Icons are official icons from OpenWeatherMap.

I’ve used Gimp to convert them into BMP then used lcd-image-converter to transform them into .h file. You’ll need to set color profile to R5G6B5 and little-endian.

ILI9341 library

Here’s useful links :

• https://github.com/adafruit/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.h
• https://github.com/adafruit/Adafruit-GFX-Library/blob/master/Adafruit_GFX.cpp
• https://github.com/adafruit/Adafruit_ILI9341/blob/master/examples/pictureEmbed/pictureEmbed.ino

HTTP request & JSON parsing

• https://randomnerdtutorials.com/esp32-http-get-post-arduino/