# ESP32-S3-RLCD-4.2

**Repository Path**: waveshare/ESP32-S3-RLCD-4.2

## Basic Information

- **Project Name**: ESP32-S3-RLCD-4.2
- **Description**: 这是waveshare esp32-s3-rlcd-4.2的代码仓库
- **Primary Language**: C
- **License**: Apache-2.0
- **Default Branch**: main
- **Homepage**: https://www.waveshare.net/shop/ESP32-S3-RLCD-4.2.htm
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-03-13
- **Last Updated**: 2026-06-11

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Waveshare ESP32-S3-RLCD-4.2

[中文](README_ZH.md)

The ESP32-S3-RLCD-4.2 is a fully reflective screen AIoT development board based on the ESP32-S3-WROOM-1-N16R8 (dual-core Xtensa LX7 @ 240 MHz, 8 MB PSRAM, 16 MB Flash) with 2.4 GHz Wi-Fi and Bluetooth 5 LE. It features a 4.2-inch 300 × 400 reflective LCD (no backlight required), an audio module (ES8311 + ES7210 with dual-mic array), along with a PCF85063 RTC, SHTC3 temperature/humidity sensor, TF card slot, USB Type-C, and an 18650 battery holder, making it ideal for smart ornaments, electronic calendars, and AI agent applications.

- [Purchase Link](https://www.waveshare.com/esp32-s3-rlcd-4.2.htm)
- [Documentation](https://docs.waveshare.com/ESP32-S3-RLCD-4.2)

<img src="assets/Product-1.webp" alt="Waveshare ESP32-S3-RLCD-4.2" width="500">

## Repository Structure

This repository provides sample programs, Arduino libraries, and factory firmware for the ESP32-S3-RLCD-4.2.

```
.
├── 01_Arduino_Libraries/   # Third-party libraries (SensorLib, U8g2, LVGL)
├── 02_Example/             # Sample programs for Arduino, ESP-IDF, ESPHome, and XiaoZhi
├── 03_Firmware/            # Pre-built firmware (.bin)
└── Tools Configuration.png # Arduino IDE board settings reference
```

## Getting Started

Pre-built firmware is available in [`03_Firmware/`](03_Firmware). For build environments, flashing steps, pin mappings, and configuration, refer to the [documentation page](https://docs.waveshare.com/ESP32-S3-RLCD-4.2).

<details>
<summary>Arduino IDE Tools Configuration</summary>

<img src="Tools-Configuration.png" alt="Arduino IDE Tools Configuration" width="500">

</details>

## Contributing

We welcome contributions! Here's how you can help:

1. Fork the repository.
2. Create a new branch for your feature or bug fix.
3. Commit your changes with clear descriptions.
4. Submit a pull request for review.

## Issues and Support

Open an [issue](https://github.com/waveshareteam/ESP32-S3-RLCD-4.2/issues) with detailed information, or contact the Waveshare team with your order number for technical support.

## License

Licensed under the Apache License 2.0. See the [LICENSE](LICENSE) file for details.

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