https://github.com/unsignedarduino/esp32-7in-epaper-weather-station

A weather display on a 7.5in Waveshare E-Paper screen with the Firebeetle ESP32 using Open-Meteo!
https://github.com/unsignedarduino/esp32-7in-epaper-weather-station

e-paper epaper esp32 firebeetle firebeetle-esp32 weather weather-display

Last synced: about 1 month ago
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A weather display on a 7.5in Waveshare E-Paper screen with the Firebeetle ESP32 using Open-Meteo!

• Host: GitHub
• URL: https://github.com/unsignedarduino/esp32-7in-epaper-weather-station
• Owner: UnsignedArduino
• Created: 2024-06-06T01:23:41.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-08-22T23:09:52.000Z (4 months ago)
• Last Synced: 2024-08-23T00:32:27.796Z (4 months ago)
• Topics: e-paper, epaper, esp32, firebeetle, firebeetle-esp32, weather, weather-display
• Language: C
• Homepage:
• Size: 3.74 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# ESP32-7in-EPaper-Weather-Station

A weather station based on a Firebeetle ESP32 and a 7.5in Waveshare E-paper display. The data is fetched

from [Open-Meteo](https://open-meteo.com/).

## Build

### Hardware

A KiCad schematic and Fusion 360 design for it's case for this project can be

found [here](https://github.com/UnsignedArduino/ESP32-7in-EPaper-Weather-Station-Hardware).

### Software

1. Have PlatformIO installed.

2. Clone the repository.

3. Open in a PlatformIO-compatible IDE because I'm too lazy to remember the commands.

4. Create a Blynk template with a battery percentage (integer from 0 to 100) data stream and widget on virtual pin V0

   and a success/fail rate (string) data stream and widget on virtual pin V1 and a `failed_refresh` event.

5. In [`include`](include), rename [`config.sample.h`](include/config.sample.h) to `config.h` and fill in values.

6. Build filesystem image.

7. Upload filesystem image.

8. Go to `.platformio\packages\framework-arduinoespressif32\libraries\Update\src\Updater.cpp` and edit the definition

   for `bool UpdateClass::setMD5(const char* expected_md5)`:

   ```c++

   bool UpdateClass::setMD5(const char *expected_md5) {

     if (strlen(expected_md5) != 32) {

       return false;

     }

     _target_md5 = expected_md5;

     _target_md5.toLowerCase();  // <-- ADD THIS LINE

     return true;

   }

   ```

   Although this issue is fixed in

   the [latest version of the ESP32 Arduino core](https://github.com/espressif/arduino-esp32/blob/master/libraries/Update/src/Updater.cpp#L454),

   [PlatformIO is stuck with ESP32 Arduino core v2](https://github.com/platformio/platform-espressif32/issues/1225).

9. Upload.

## Contributing

Notes:

* The custom font is a slimmed down version of the [GNU Unifont](https://www.unifoundry.com/unifont/index.html) and

  converted into the `u8g2` font with [this tool](https://stncrn.github.io/u8g2-unifont-helper/).

* Icons are from [QWeather](https://icons.qweather.com/en/) and [Bootstrap](https://icons.getbootstrap.com/), converted

  with [ImageMagick](https://imagemagick.org/) to 100x100 bitmaps.

* I modified the [GxEPD2](https://github.com/ZinggJM/GxEPD2) library to

  support [reading B/W pixels](lib/GxEPD2/src/GxEPD2_BW.h) from it's framebuffer. This is to upscale the 16x16 fonts

  into a (blocky) 32x32 font on the fly.