> ## Documentation Index
> Fetch the complete documentation index at: https://learn.pcbcupid.com/llms.txt
> Use this file to discover all available pages before exploring further.

> Overview of the Glyph S3 development board: a dual-core Xtensa MCU with Wi-Fi, Bluetooth LE, AI acceleration, and a Qwiic Glink connector.

# Overview

export const ShopHeader = ({title, url}) => <div style={{
  display: 'flex',
  justifyContent: 'flex-end',
  alignItems: 'center',
  width: '100%',
  marginBottom: '1rem',
  gap: '20px'
}}>
    <a href={url} target="_blank" rel="noopener noreferrer" style={{
  display: 'inline-flex',
  alignItems: 'center',
  backgroundColor: '#00b894',
  color: '#fff',
  padding: '8px 18px',
  borderRadius: '8px',
  textDecoration: 'none',
  fontSize: '0.95rem',
  fontWeight: 600,
  whiteSpace: 'nowrap',
  flexShrink: 0
}}>
      Shop now
    </a>
  </div>;

export const ImgGallery = ({images, modelUrl}) => {
  var [active, setActive] = useState(0);
  var [show3D, setShow3D] = useState(false);
  useEffect(function () {
    if (show3D || images.length <= 1) return;
    var t = setTimeout(function () {
      setActive(function (p) {
        return (p + 1) % images.length;
      });
    }, 3500);
    return function () {
      clearTimeout(t);
    };
  });
  var img = images[active];
  return <div style={{
    position: 'relative',
    background: 'linear-gradient(to bottom, #fff 0%, #fff 80%, #f8f8f8 100%)',
    borderRadius: '32px',
    border: '1px solid rgba(0,0,0,0.08)',
    overflow: 'hidden',
    marginTop: '0.75rem',
    marginBottom: '1.5rem'
  }}>
      <div style={{
    position: 'relative',
    height: '450px',
    display: 'flex',
    alignItems: 'center',
    justifyContent: 'center',
    background: '#fff',
    padding: '1rem'
  }}>
        {show3D && modelUrl ? <div ref={function (el) {
    if (!el || el._mv) return;
    el._mv = true;
    var s = document.createElement('script');
    s.src = "https://ajax.googleapis.com/ajax/libs/model-viewer/4.2.0/model-viewer.min.js";
    s.type = "module";
    s.onload = function () {
      var mv = document.createElement('model-viewer');
      mv.setAttribute('src', modelUrl);
      mv.setAttribute('camera-controls', '');
      mv.setAttribute('auto-rotate', '');
      mv.style.width = "100%";
      mv.style.height = "100%";
      mv.style.backgroundColor = "#f8f8f8";
      el.innerHTML = "";
      el.appendChild(mv);
    };
    document.head.appendChild(s);
  }} style={{
    width: "100%",
    height: "100%"
  }} /> : <img src={img && img.url} alt={img && img.label} loading="lazy" style={{
    maxWidth: '100%',
    maxHeight: '100%',
    objectFit: 'contain',
    borderRadius: '8px'
  }} />}
      </div>
      <div style={{
    display: 'flex',
    justifyContent: 'center',
    gap: '12px',
    padding: '1rem',
    background: '#eee',
    borderTop: '1px solid rgba(0,0,0,0.08)'
  }}>
        {images.map(function (img, idx) {
    return <button key={img.id || idx} onClick={function () {
      setActive(idx);
      setShow3D(false);
    }} style={{
      padding: '0.6rem 1.5rem',
      borderRadius: '12px',
      border: !show3D && idx === active ? '1px solid #00b894' : '1px solid rgba(0,184,148,0.4)',
      background: !show3D && idx === active ? '#00b894' : '#fff',
      color: !show3D && idx === active ? '#fff' : '#000',
      cursor: 'pointer',
      fontSize: '0.75rem',
      fontWeight: 700,
      textTransform: 'uppercase',
      fontFamily: 'inherit'
    }}>
              {img.label}
            </button>;
  })}
        {modelUrl ? <button onClick={function () {
    setShow3D(true);
  }} style={{
    padding: '0.6rem 1.5rem',
    borderRadius: '12px',
    border: show3D ? '1px solid #00b894' : '1px solid rgba(0,184,148,0.4)',
    background: show3D ? '#00b894' : '#fff',
    color: show3D ? '#fff' : '#000',
    cursor: 'pointer',
    fontSize: '0.75rem',
    fontWeight: 700,
    textTransform: 'uppercase',
    fontFamily: 'inherit'
  }}>
            3D VIEW
          </button> : null}
      </div>
    </div>;
};

<ShopHeader title="Glyph S3 Overview" url="https://shop.pcbcupid.com/product/gd004/" />

<ImgGallery modelUrl="https://raw.githubusercontent.com/pcbcupid/pcbcupid-hardware-libraries/main/pcbcupid_3dmodels/glb/glyph-s3_h.glb" images={[{url: "https://files.pcbcupid.com/Documentation/Boards/glyph-S3/Glyph%20S3%20overview%5B1%5D.avif", label: "ILLUSTRATION VIEW", id: "illustration"}, {url: "https://files.pcbcupid.com/Documentation/Boards/glyph-S3/Glyph-s3-side-view.avif", label: "BOARD VIEW", id: "board"}]} />

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

* **RAM**: 512 KB SRAM

* **Flash Memory**: 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

### 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](https://learn.pcbcupid.com/boards/needs/arduino-ide-setup#hardware-not-detecting).

### 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.

<div style={{ textAlign: "center" }}>
  <img src="https://files.pcbcupid.com/Documentation/Boards/glyph_c6/PCBCUPID_c6_connectivity_updated_result.avif" alt="PCBCUPID_S3_connectivty_updated_result" width="250" />
</div>

<Info>
  The wireless module on GLYPH board is CE & FCC Certified
</Info>

### Development Support

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

* **Arduino**
* **MicroPython**
* **ESP-IDF (Espressif IoT Development Framework)**

<div style={{ textAlign: "center" }}>
  <img src="https://files.pcbcupid.com/Documentation/Boards/PCBCUPID_arduino_espressif_micropython_result.avif" alt="PCBCUPID_arduino_espressif_micropython_result" width="350" />
</div>

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

### Memory and Storage

While the Glyph S3 has 512KB onboard SRAM, it also relies on an external flash chip for program storage. On this board, there is 8MB of flash memory (ESP32-S3-MINI-1-N8, Quad SPI), which is shared between the code, file storage and OTA.

### S3 Chip Features

* **BluFi**
* **RF Coexistence**
* **ESP-BLE-MESH**
* **ESP-WIFI-MESH**

You can read more about it in [ESP32S3 DATASHEET](https://files.pcbcupid.com/Documentation/Boards/glyph-S3/PCBCUPID_esp32-s3_datasheet.pdf) and [ESP32S3 OFFICIAL](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/get-started/) documentation.

***