A Spotify Web API client for M5Paper

• Display song title, artists & JPEG album art
• Multilple screen layouts
• Play/Pause, Next, Previous with M5Paper buttons or touchscreen
• Easy OAuth2 authorization through browser

• Create an App in Spotify Developer Dashboard and declare https://m5spot.local/callback/ as the Redirect URI
• Rename config.h.SAMPLE to config.h and complete the settings
• Install external libraries
  • ArduinoJson
  • https://github.com/me-no-dev/AsyncTCP
  • https://github.com/me-no-dev/ESPAsyncWebServer
• Compile and upload using Arduino IDE