device epd

Open Source E-Paper Display Platform

• ? Website - Learn more about paperdash.io
• ? Discover - Find devices in your local network
• ? Case - 3D Model
• ? Like us on Instagram

Goals

• Make E-Paper displays accessible to all kind of developers
• Easy and always update able
• Usable also without developer background
• Deliver the best user experience
• Should work Out-of-the-box
• Using standard parts to built

Features

Firmware

• OTA update
• REST API
• JPEG decoder (some limitations)
• PNG decoder (work in progress)
• Out-of-the-box faces
  • Current weather condition and forecast (https://openweathermap.org/ api key requried)
  • Calendar view with random picture
  • Today view with fullscreen random picture
• Wifi STA fallback if connection failed

Web APP

• ESP-32 optimized vue.js Web APP
• Material Design Framework
• First run setup wizard
• Screen preview of epd
• Basic PWA possibility

API examples

# Get device stats as json
$ curl http://paperdash-epd.local/stats

# Download current image display
$ curl http://paperdash-epd.local/api/device/screen > current.bmp

# Send an image to display
$ curl -F '=@data/faceToday.jpg;filename=dithering' http://paperdash-epd.local/api/device/screen

Getting started

Necessary parts to build the project

• Microcontroller ESP32
• E-Paper Display GDEW075T8
• Case

ESP-32 firmware

The whole architecture was inspired from the arduino concept with a setup() and loop() function. This is the reason why everything is broken down into separate modules below /lib. Each module has basically a setupXXX() and loopXXX() method.

Build (with PlatformIO)

$ pio run --environment esp32

# update esp
$ platformio run --target upload

Web APP

Based on state of the art technologie Vue.js + Vuetify + Webpack

Build

$ yarn --cwd app
$ yarn --cwd app build

# update esp
$ platformio run --target uploadfs

# alternative, create spiffs.bin
$ platformio run --target buildfs