lilygo47_calendar

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Application for displaying entries from the Google Calendar on the LILYGO 4,7" device.

Hardware

The project uses the LILIGO EPD 4.7" device. http://www.lilygo.cn/

Description

The device periodically connects to wifi, and then downloads information about scheduled events (using Apps Scripts) from the Google Calendar. After downloading the data, they are displayed and the device itself goes to sleep.

The presented data consists of two main elements:

Status bar,
Information about events

The status bar contains information (from the left) about: -- The number of events that were not displayed (did not fit on the display), -- Date and time the information was retrieved, -- Battery charge level and supply voltage.

Installation

Google Apps Script

The 'calendar_script.gc' script is based on a script made by ClemRz. The original script is available at: https://github.com/ClemRz/GCalendar-Irrigation

Adding a script to Apps Script

In order to add a script that will download and prepare data from the calendar, go to https://script.google.com. Then select "New Project". In the window that appears, paste the code from the file calendar_script.gc. In the code snippet:

  var _calendarName = '___CALENDAR_NAME___',
    _checkInRate = RANGE;

you must replace the text ___ CALENDAR_NAME ___ with the name of your calendar.

If we have a family founded on Google https://families.google.com/families then we can share the calendar among all people in our family. If you need this functionality then replace ___ CALENDAR NAME ___ with Family. The finished code snippet should look like this:

  var _calendarName = 'Family',
    _checkInRate = RANGE;

Deploy script

When the script is ready, select Deploy-> New Deployment in the upper right corner of the page. In the window that will appear, select the type as Internet application. Enter any name in the Description (or leave it blank). In Execute as, choose Me, and in Who has access, set Anyone with a Google account.

After the deploy, a window appears from which we copy the Implementation ID - we will need it later.

Preparation of the device

I used Visual Studio Code (version 1.57.1) with PlatformIO IDE plugin (version 2.3.2)

The configuration on the device side is limited to the preparation of the configuration file. A sample configuration file is provided in the include / config.h_example file. You only need to rename it to config.h and complete the WiFi (ssid and password) section and Google Apps script id (Implementation ID from previous stage).

#define WIFI_SSID             "Your WiFi SSID"
#define WIFI_PASSWORD         "Your PASSWORD"

#define SCRIPT_ID             "YOUR_GOOGLE_SCRIPT_ID"

Event priority

Each entry in the calendar can be marked with the appropriate color - I use this as a priority of the event. The higher the priority, the darker the dot is displayed before to the entry.

Name	Value from AppScript (int)	Value in EPD (nazwa, hex)
Tomato	11	LightGrey (0xBB)
Tangerine	6	LightGrey (0xBB)
Sage	2	LightGrey (0xBB)
Peacock	7	Grey (0x88)
Lavender	1	Grey (0x88)
Graphite	8	Grey (0x88)
Flamingo	4	DarkGrey (0x44)
Banana	5	DarkGrey (0x44)
Basil	10	DarkGrey (0x44)
Blueberry	9	Black (0x00)
Grape	3	Black (0x00)
Default		Grey (0x88)

Housing

I used the housing made by 3DMath Link to the housing: https://www.thingiverse.com/thing:4908721

License

MIT

blizniukp / lilygo47_calendar