ePaper example

Proof-of-concept Arduino sketch Waveshare 9.7 inch e-Paper Display (SPI) with font rendering.

Tested on ESP32.

Build instructions

Make sure to check out project including submodules

git clone --recursive https://github.com/thelazt/waveshare-9.7inch-e-paper-demo.git

Load sketch in Arduino and run.

(Ugly symlinks in sketch directory due to the lack of real folder support in Arduino)

Example Wiring

This example was tested using a DFRobot FireBeetle ESP32 connected to the HAT via SPI (see "Pinouts")

[ESP32] --- [ePaper HAT]
VCC     --- 5V   (red)
GND     --- GND  (black)
GPIO 19 --- MISO (blue)
GPIO 23 --- MOSI (yellow)
GPIO 18 --- SCK  (orange)
GPIO 25 --- CS   (green)
GPIO 26 --- RST  (white)
GPIO 27 --- HRDY (purple)

Add custom Fonts

Add required fonts (in TrueType Format) into folder fonts.

Example: To build DejaVuSans in 12pt run

cd epaper/fonts
./addfont.sh DejaVuSans.ttf 12
Importing DejaVuSans.ttf to DejaVuSans12.dat
Done: 5208 unique glyphs.
Font originally had 5208 glyphs.
After filtering, 193 glyphs remain.
Original size is 10168 bytes
Press ctrl-C at any time to stop.
Results are saved automatically after each iteration.
Limit is 50 iterations
iteration 1, size 7202 bytes, speed 88980 B/min
iteration 2, size 6699 bytes, speed 104070 B/min
[...]
iteration 49, size 5426 bytes, speed 7689 B/min
iteration 50, size 5426 bytes, speed 7689 B/min
Wrote DejaVuSans12.c
Created DejaVuSans12.c!