T-Embed SI4732

Overview

LILYGO T-Embed SI4732 is an enhanced T-Embed featuring an integrated SI4732-A10 extension module — a high-performance DSP radio receiver supporting AM/FM/SW/LW broadcast bands with high sensitivity, low power consumption, and RDS support. The T-Embed base includes a rounded enclosure with a rotary encoder + RGB LED ring (APA102), a 1.9-inch ST7789V IPS TFT (320 × 170), MEMS microphone (ES7210), built-in speaker, TF card slot, and 900 mAh Li-Po battery. Suitable for radio receivers, audio applications, and portable media.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
T-Embed	✓		SI4732 radio, display, encoder, audio examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Open the T-Embed project folder
4. Open platformio.ini and select your example
5. Click ✓ to compile, connect via USB-C, click → to upload

Arduino

1. Install Arduino IDE
2. Install Arduino ESP32
3. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Port	Your port
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Core Debug Level	None
USB DFU On Boot	Disable
Erase All Flash Before Sketch Upload	Disable
Events Run On	Core1
Flash Mode	QIO 80 MHz
Flash Size	16MB (128Mb)
Arduino Runs On	Core1
USB Firmware MSC On Boot	Disable
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM
Upload Mode	UART0/Hardware CDC
Upload Speed	921600
USB Mode	CDC and JTAG

4. Click Upload

Development Platforms

1. ESP-IDF
2. Arduino IDE

Video

Key Features

• ESP32-S3 dual-core LX7 @ 240 MHz, Wi-Fi + Bluetooth 5.0
• SI4732-A10 DSP radio receiver (AM/FM/SW/LW/RDS)
• 1.9-inch ST7789V IPS TFT (320 × 170)
• Rotary encoder + APA102 RGB LED ring
• ES7210 MEMS microphone + built-in speaker
• MIA-M10Q GPS, TF card slot
• 16 MB Flash + 8 MB PSRAM, 900 mAh battery

Product Parameters

Feature	Specification
MCU	ESP32-S3 @ Dual-core LX7, 240 MHz
Flash	16 MB
PSRAM	8 MB
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	Bluetooth 5.0 LE
Radio	SI4732-A10 (AM/FM/SW/LW/RDS)
GPS	MIA-M10Q
Display	1.9-inch ST7789V IPS TFT, 320 × 170
Microphone	ES7210 MEMS
RGB LED	APA102
Storage	TF card slot
USB	1 × Type-C
Battery	702550, 900 mAh
Mounting Holes	2 × M2
Dimensions	98 × 39 × 39 mm

Pin Diagram

Dimension Diagram

Schematic

• T-Embed-SI4732 Schematic

Datasheet

• PN532
• BQ25896
• BQ27220

Software Development

• T-Embed GitHub Repository

Dependent Libraries

• RadioLib
• PN532
• XPowersLib
• TFT_eSPI
• RotaryEncoder
• FastLED
• IRremoteESP8266
• ESP32-audioI2S
• LVGL
• PU2CLR SI4735

FAQ

Version History

Version	Release Date	Update Description
T-Embed SI4732 V1.0	—	Initial version