400 x 300 monochrome reflective touch display development board
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🌐 Product · 📦 Firmware · 🧩 ESP-IDF · 🔧 Arduino · 📚 Documentation
This repository provides matching ESP-IDF and Arduino examples 01–06, plus the factory application source. The reflective display is black and white and has no backlight.
| Feature | Device / interface |
|---|---|
| MCU | ESP32-S3 |
| Memory | 16 MB Flash, 8 MB OPI PSRAM |
| Display | 4.2-inch, 400 x 300, ST7305, SPI |
| Touch | CST816, I2C |
| RTC / climate sensor | PCF85063A / SHTC3 |
| Audio | ES8311, ES7210, dual-microphone recording/playback |
| Storage | microSD, SDMMC 1-bit |
- Download the complete factory firmware with
FactoryOnlyin its filename from firmware. - Connect the board with a USB data cable, then follow the flashing instructions to erase and flash at
0x0. - Power on again, view the desktop under ambient light, and tap an app icon.
- Follow the factory firmware user guide to set up Wi-Fi, prepare an SD card, and try each app.
Factory application source is in examples/factory. To modify the examples, choose one below and follow its README to build and flash.
| Example | Feature |
|---|---|
| 01_lvgl | LVGL touch demo |
| 02_pcf85063 | RTC clock |
| 03_shtc3 | Temperature and humidity |
| 04_sd_card_test | microSD read/write test |
| 05_mic | Dual-microphone recording |
| 06_lvgl_photos | Swipe photo gallery |
| Example | Feature |
|---|---|
| 01_lvgl | LVGL touch demo |
| 02_pcf85063 | RTC clock |
| 03_shtc3 | Temperature and humidity |
| 04_sd_card_test | microSD read/write test |
| 05_mic | Dual-microphone recording |
| 06_lvgl_photos | Swipe photo gallery |
Arduino dependencies are bundled in examples/arduino/libraries. All sketches share board_config and LVGL 9.5.0.
| Framework | Version | Examples |
|---|---|---|
| ESP-IDF | v6.0.2 | 6 |
| Arduino-ESP32 | 3.3.12 | 6 |
| LVGL | 9.5.0 | Both frameworks |
Versions and board options are recorded in .github/product.json.
- Example or repository problems: open an issue.
- Product usage and hardware questions: Waveshare support.
First-party examples use Apache License 2.0; see LICENSE. Third-party libraries and fonts retain their respective licenses.