E-Paper Agenda Display

Renders todays agenda on an e-paper display. The events are received through a webserver running on the esp32. The current version is using a Waveshare 7.5'' HD (B) Black/Red/White Epaper Display.

Features:

• Show Todays events in an eight hour time frame around the current time (configurable)
• Runs as a webserver, events can be POSTed to the /setEvents endpoint in JSON format
• Show current time as a marker, automatically refreshing every 5 minutes
• Current event is highlighted in Red
• supports overlapping events
• supports all day events
• automatic line breaking and shortening of description texts to fit into event box
• auto select smaller title fonts for short events

Planned features

• extract into more resusable, standalone library
• publish fixes and improvements for waveshare library
• support week and month views

Expected JSON Format

{
    "events":[
        {
            "start" : "1615244400", // starttime in UTC seconds
            "end": "1615246200", // endtime in UTC seconds
            "title": "The event Title",
            "description": "The event description",
            "allDay": "true"/"false"
        },
        ...
    ]
}

Libraries Used:

• Waveshare ESP32 e-Paper Driver for setup see Waveshare's Wiki->User Guides of ESP32

• ArduinoJson by Benoit Blanchon Version 6.17.3

  An efficient and elegant JSON library for Arduino Supports JSON parsing and formatting. Uses fixed memory allocation.

• ezTime by Rop Gonggrijp Version 0.8.3

  Does NTP, datetime formatted strings, milliseconds and timezones. Drop-in replacement for Arduino Time Library See more on Github

• builtin ESP32 Libraries: WiFi, WebServer, ESPmDNS, SPIFFS, FS