Overview

Introducing the Glyph S3 Lucid, an interactive and versatile microcontroller development board powered by the high-performance ESP32-S3 chip. Designed for portable handheld gadgets, mini gaming devices, and interactive AIoT applications, the Glyph S3 Lucid comes equipped with an integrated 0.91” LCD display, 3 tactile SPST action buttons, and an inbuilt Battery Management System (BMS) for comprehensive battery safety and regulation.

• Dimensions: Measures 50.8mm x 22.8mm x 1.6mm (without headers soldered)
• Processor: ESP32-S3 dual-core LX7 microprocessor @ 240 MHz, 3.3V logic and power
• Memory:
  • SRAM: 512 KB Internal SRAM
  • PSRAM: 2 MB Quad SPI PSRAM
  • Flash Memory: 4 MB SPI Flash
• GPIO: 20 GPIO pins with the following capabilities:
  • 9 GPIO pins support 12-bit ADC (ADC1): IO1, IO2, IO4, IO5, IO6, IO7, IO8, IO9, IO10
  • I2C
  • SPI
  • UART
  • USB Serial
• Display: Integrated 0.91” LCD display for visual feedback, graphics, and gameplay
• 3 SPST Action Buttons: 3 tactile push buttons for game controls, menu navigation, and interactive input
• Power Management & Inbuilt BMS:
  • Inbuilt Battery Management System (BMS) with overcharge and overdischarge protection
  • USB Type-C connector for power, programming, and serial port debugging
  • 3.3V regulator with 900mA peak current output
  • Built-in LiPo / Li-ion charger with charging status indicator LED
  • Auto Switch between Battery & USB Power (hot-swap support)
  • Battery connection via onboard BAT and GND pins (with inbuilt BMS protection)
  • Ability to turn off the battery with the onboard slide switch
  • Reverse voltage protection with diode
• Additional Features:
  • On-board Status LED: Connected to GPIO 33
  • On-board GLINK connector for easy integration with QWIIC, STEMMA QT compatible sensors & modules
  • High-quality Reset and Bootloader buttons for easy access

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Native Bootloader and Programming

The Glyph S3 Lucid features a built-in USB bootloader that makes programming new firmware easy and keeps the cost of the board down. On first-time use, hold down the BOOT button while plugging it into USB, and it will appear as a COM PORT in your Device Manager. If you face any issues related to hardware detection on your system, please check out our troubleshooting guide here.

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Interactive Display & Buttons

The Glyph S3 Lucid provides a complete, self-contained interactive interface:

• Integrated 0.91” LCD Display: Built directly onto the board for immediate visual output without needing external breadboards or extra wiring.
• 3 SPST Tactile Switches: Three momentary switches integrated directly on the board to serve as user inputs (such as Left, Right, and Action / Select) for mini games, dashboards, and handheld UI controls.

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Connectivity

The Glyph S3 Lucid excels in connectivity with its built-in Wi-Fi and Bluetooth LE support. This makes it ideal for IoT and connected handheld applications where reliable wireless communication is crucial.

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Development Support

The ESP32-S3 Glyph Lucid is supported by a variety of development environments, including:

• Arduino IDE
• MicroPython
• ESP-IDF (Espressif IoT Development Framework)

With extensive library support and a large community, getting started with the Glyph S3 Lucid is straightforward.

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Memory Architecture

The Glyph S3 Lucid features 512 KB of onboard SRAM, 4 MB of SPI Flash, and 2 MB of Quad SPI PSRAM. The integrated 2MB PSRAM provides generous memory bandwidth and storage for display framebuffers, graphical assets, and complex data buffers.

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S3 Chip Features

• Xtensa Dual-Core 32-bit LX7: High-performance compute running up to 240 MHz with vector instructions for AI/ML acceleration.
• BluFi: Easy Bluetooth-assisted Wi-Fi provisioning.
• RF Coexistence: Simultaneous Wi-Fi and Bluetooth operation.
• ESP-BLE-MESH & ESP-WIFI-MESH: Scalable multi-device mesh networking.

You can read more about it in the ESP32S3 DATASHEET and ESP32S3 OFFICIAL documentation.