https://github.com/henryleach/arduino-epaper-calendar
Collection of Arduino sketches for creating an epaper based clock or calendar.
https://github.com/henryleach/arduino-epaper-calendar
arduino calendar clock eink epaper-displays
Last synced: 26 days ago
JSON representation
Collection of Arduino sketches for creating an epaper based clock or calendar.
- Host: GitHub
- URL: https://github.com/henryleach/arduino-epaper-calendar
- Owner: henryleach
- License: gpl-3.0
- Created: 2022-03-13T20:34:05.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-04-24T12:58:03.000Z (over 3 years ago)
- Last Synced: 2024-12-28T20:27:45.873Z (9 months ago)
- Topics: arduino, calendar, clock, eink, epaper-displays
- Language: C
- Homepage:
- Size: 34.2 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: readme.org
- License: LICENSE
Awesome Lists containing this project
README
#+TITLE: Arduino ePaper Clock Calendar Sketches
Collection of four sketches for creating an e-paper (e-ink) clock or calendar with an Arduino (Uno or Nano) and a Waveshares 2.9" e-paper screen.
* Wiring
All the sketches assume the Arduino is wired as follows:
| DS3231 | Header Wire Colour | Arduino |
|-------------+--------------------+-----------------------------------------------------------|
| SCL | | A5 |
| SDA | | A4 |
| VCC | | 5V |
| GND | | GND |
| SQW | | D2, for interrupt alarm, set with wakeUpPin() |
|-------------+--------------------+-----------------------------------------------------------|
| Screen | | |
|-------------+--------------------+-----------------------------------------------------------|
| BUSY | Purple | D7 |
| DC | Green | D8 |
| RST | White | D9 |
| CS | Orange | D10 |
| DIN | Blue | D11 |
| CLK | Yellow | D13 |
| VCC | Grey | 3.3V |
| GND | Brown | GND |
|-------------+--------------------+-----------------------------------------------------------|
| Arduino GND | | D4 (Optional, connect to add 1 hour for daylight savings) |
* GxEPD2_with_two_fonts
Requires:
- [[https://github.com/ZinggJM/GxEPD2][GxEPD2]]
Test the GxEPD2 library for displaying graphics on the e-paper screen. Specifically showing how to use two different fonts on the same display.
See article [[https://www.henryleach.com/2022/03/arduino-e-paper-screen/][Arduino E-paper Screen]] for more details.
* sleep_wake_with_rtc
Requires:
- [[https://github.com/JChristensen/DS3232RTC][DS3232RTC]]
- [[https://github.com/rocketscream/Low-Power][LowPower]]
Use a DS3231 Real Time Clock module's alarm function, and the low-power library to put the Arduino to sleep, and then wake it again.
See article [[https://www.henryleach.com/2022/03/arduino-real-time-clock/][Arduino & Real-Time Clock]] for more details.
* epaper_clock
Requires:
- [[https://github.com/JChristensen/DS3232RTC][DS3232RTC]]
- [[https://github.com/rocketscream/Low-Power][LowPower]]
- [[https://github.com/ZinggJM/GxEPD2][GxEPD2]]
- [[https://github.com/olikraus/U8g2_for_Adafruit_GFX][U8g2 for Adafruit GFX]]
Displays the time, and date, on the e-paper screen, updating every minute. Puts the Arduino to sleep in between.
Use the SetSerial example sketch from the DS3232RTC Library (File -> Examples -> DS3232RTC -> SetSerial).
If you need to adjust between winter and summer time (plus 1 hour) set the time to winter time, then connect GND to pin D4, this will add 1 hour to the displayed time.
* epaper_weekday_calendar - In Progress
Shows the day of the week in large letters across the top, and the date below in a smaller font. Updates daily at midnight, sleeps the Arduino in between.