LILYGO T-Circle S3

Note: T-Circle S3 is the ESP32-S3 version Version, click here to switch to ESP32 versionT-Circle

Introduction

LILYGO T-Circle S3 is a multifunctional development board based on the ESP32-S3 wireless microcontroller, integrating a 0.75-inch round LCD touchscreen (160x160 pixels), MAX98357A digital audio amplifier, MSM261 audio input module (presumed to be a microphone), APA102 LED control interface, and QWIIC expansion connector.

Its core configuration includes 16MB Flash and 8MB Octal SPI PSRAM, supporting Wi-Fi and Bluetooth communication. The board also features a CST816D capacitive touch controller for intuitive interaction.

With precise pin mapping (e.g., LCD_MOSI, TP_SDA), it combines graphical display, audio I/O, touch interaction, and high-speed storage in a compact form factor. This makes it ideal for prototyping IoT terminals, wearable smart devices, or embedded audio-visual applications.

Appearance and function introduction

Appearance

Pinmap

Module Information and Specifications

Description

T-Circle-S3 is a development board based on the ESP32-S3, featuring a compact 0.75-inch round display. It comes equipped with a speaker, microphone, and a tri-color LED. On the back, it provides six programmable I/O ports, allowing for the expansion of various peripherals.

Related Links

Github:T-Circle-S3

• GC9D01N
• TFT_eSPI-2.5.43
• MAX98357A
• MSM261S4030H0R)
• MP34DT05-A

Schematic Diagram

T-Circle-S3

Dependency Libraries

• Arduino_DriveBus-1.1.16
• Arduino_GFX-1.3.7
• ESP32-audioI2S-3.0.6
• DFRobot_MSM261
• FastLED-3.6.0

Software Design

Arduino Set Parameters

Development Platform

1. VS Code
2. Arduino IDE
3. Platform IO

Product Technical Support