This is a daily calendar using a color E-Paper display.
The screen is refreshed everyday with the image stored in the microSD card overlayed with today's date.
First, you have to set date and time to RTC module.
A simple shell is available if the D3 pin is open, so you can control it through the serial interface with baud rate of 9600.
| Command | |
|---|---|
| NOW | Show current date and time. |
| DATE | Set date by 8 digits (yyyymmdd). |
| TIME | Set time by 6 digits (HHMMSS). |
| ALARM | Set alarm time by 4 digits (HHMM). |
| CLEAR | Clear display with color (0-6). |
| INDEX | Set image index number (0-255). |
| LOAD | Load image data (0-255 or current). |
| EXAMINE | Examine function (0-3). |
| HELP | Show command help. |
| VERSION | Show version information. |
| QUIT | Quit shell. |
For example, enter command as follows to set January 16th 2022, 12:34:56.
ArduinoACePCalendar Shell
Version: X.XX (Xxx XX 20XX XX:XX:XX)
> date 20220116
OK
> time 123456
OK
> now
2022/1/16 12:35:03
>
The screen is refreshed at 3:30 as default. If you'd like to change this 2:45, enter command as follows.
> alarm 0245
OK
> alarm
02:45
>
Second, you have to convert the images to the particular format and save them to a microSD card.
As an image conversion tool, I produce a python script image2acp.py.
To execute this script, you have to install not only python 3.X but also ImageMagick 7.X because this script uses it.
You can obtain the file sample1.acp from sample1.jpg by entering following on console.
> python image2acp.py sample1.jpg
Then copy *.acp files into the root directory of a microSD card.
The order of images to display depends on the algorythm of file scanning in Arduino SD library. If all of *.acp files were displayed or 256th image was displayed, the first image will be desplayed again on the next day.
- Arduino Pro Mini 328 - 3.3V/8MHz (or compatible product)
- 5.65inch 7-Color E-Paper module
- RTC module
- MicroSD breakout board
- Battery charger controller module
- A Li-Po battery
- A 180Ω resistor, a 1F electrolytic capacitor, a tactile switch and a slide switch (2 circuits)
- Connectors, wires, etc...
You can build the source code by Arduino IDE with following configuration.
- Board: "Arduino Pro or Pro Mini"
- Processor: "ATmega328P (3.3V 8MHz)"
Then, you can transfer binary data to Arduino Pro Mini by any writer.
These codes are licensed under MIT License.