LILYGO T-Embed SI4732 is an ESP32-S3 development board with an AM/FM radio, a TFT display, a rotary encoder, a built-in microphone, and a microSD card slot powered through a USB-C port or LiPo battery.
As its name implies, it’s based on the earlier LILYGO T-Embed battery-powered WiFi and BLE controller with a display and rotary encoder, but also adds a Skyworks SI4732 AM//FM/SW/LW radio receiver to the mix.
LILYGO T-Embed SI4732 specifications:
- Wireless module – ESP32-S3-WROOM-1 module
- SoC – ESP32-S3
- CPU – Dual-core Xtensa LX7 processor @ 240 MHz with vector extension for AI/ML
- Memory – 512 KB SRAM, 8 MB PSRAM
- Storage – 16MB flash
- Wireless – 2.4 GHz WiFi 4 and Bluetooth 5.0 LE
- PCB antenna
- SoC – ESP32-S3
- Storage – MicroSD card slot
- Display – 1.9-inch IPS color TFT LCD with 320 x 170 resolution (ST7789V SPI driver)
- Audio – 2x microphones, 8 Ohm @ 1W speaker
- Radio – Skyworth SI4732-A10 digital radio receiver chip (I2C + Audio) with support for
- FM band – 64 – 108 MHz (worldwide)
- AM band – 520 – 1710 kHz (worldwide)
- SW band – 2.3 – 26.1 MHz
- LW band – 153 – 279 kHz
- Antenna – Telescopic antenna from 101 to 310 mm
- Rotary encoder with key
- 24 detents
- 12 Pulse/360°
- Ring RGB light (7x LEDs)
- Expansion – Grove connector, unpopulated 8-pin GPIO header (internal)
- Misc – Reset button
- Power Supply
- 5V via USB-C port
- 2-pin connector for LiPo battery; battery charge and discharge protection circuit
- Dimensions – 98 x 39 x 39 mm (enclosure)
The T-Embed SI4732 board shares the same GitHub repository as the original T-Embed. The main page does not mention anything about the SI4732 module, but I can see a SI4735_Shield_250308.bin firmware, and a “SI4735_Shield” Arduino sketch in the “examples” directory that is based on the PU2CLR SI4735 Library.
LILYGO sells the T-Embed SI4732 on AliExpress for $49.98 with free shipping, which compares to $34.98 for the original T-Embed. The new ESP32-S3 AM/FM radio board is also sold on Amazon for $45 plus shipping and taxes.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress. We also use affiliate links in articles to earn commissions if you make a purchase after clicking on those links.
