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Standard Variant
  • Module: Glyph-S3
  • Flash: 8MB (Quad SPI)
  • PSRAM: None
Performance Variant Shop Now
  • Module: Glyph-S3-PSRAM
  • Flash: 4MB (Quad SPI)
  • PSRAM: 2MB (Octal SPI)
Introducing the Glyph S3, a powerful microcontroller development board based on the ESP32-S3 chip, ideal for AIoT, edge computing, and computer vision applications. With dual-core performance and enhanced peripherals, the Glyph-S3 delivers robust capabilities in a compact footprint.
  • 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 Options:
    • SRAM: 512 KB (Internal)
    • PSRAM: 2 MB (Only available on PSRAM Variant)
  • Flash Memory: Up to 8 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
    All the important peripherals, labeled for easy access.
  • Power Management:
    • USB Type C connector for power, programming, and serial port debugging
    • 3.3V regulator with 600mA peak current output
    • Built-in lipoly/li-ion charger with charging status indicator LED
    • Auto Switch between Battery & USB Power
    • Ability to Measure Battery Capacity
    • Ability to Turn off the battery with the onboard slide switch
    • Reverse Voltage protection with Diode
  • Additional Feature:
    • On-board LED (Connected to GPIO21)
    • On-board GLINK connector for easy integration with QWIIC, STEMMA QT compatible sensors & modules.
    • High Quality Reset and Bootloader button for easy access

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Native Bootloader and Programming

The Glyph S3 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 COM PORT in your device Manager. If you face any issue related to hardware not detecting on your system, please check out our troubleshooting guide here.

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Connectivity

The Glyph S3 excels in connectivity with its built-in Wi-Fi and Bluetooth support. This makes it ideal for IoT applications, where reliable wireless communication is crucial.
PCBCUPID_S3_connectivty_updated_result
The wireless module on GLYPH board is CE & FCC Certified

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Development Support

The ESP32-S3 Glyph is supported by a variety of development environments, including:
  • Arduino
  • MicroPython
  • ESP-IDF (Espressif IoT Development Framework)
PCBCUPID_arduino_espressif_micropython_result
With extensive library support and a large community, getting started with the Glyph S3 is straightforward.

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Memory and Storage

The Glyph-S3 is available with different module configurations to suit your project requirements.
Technical SpecsMemory Architecture

Both variants share the 512KB onboard SRAM for core operations. Depending on your choice:

  • The Standard Variant offers more storage for code and assets (8MB Flash).
  • The Performance Variant includes 2MB PSRAM — an essential option if you need extra memory for high-resolution displays or complex data buffers.

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S3 Chip Features

  • BluFi
  • RF Coexistence
  • ESP-BLE-MESH
  • ESP-WIFI-MESH
You can read more about it in ESP32S3 DATASHEET and ESP32S3 OFFICIAL documentation.