ESP32-S3 LoRa Development Board (HF)

The ESP32-S3 LoRa Development Board (HF) is a compact wireless development platform designed for IoT and LPWAN applications. It integrates the Semtech LR1121 third-generation LoRa transceiver together with the ESP32-S3 dual-core processor, enabling long-range wireless communication with low power consumption.

The board supports Sub-GHz and 2.4 GHz LoRa communication, making it suitable for global wireless connectivity and mesh networking applications. It can connect to cloud platforms through LoRa or LoRaWAN gateways, enabling long-range data transmission for IoT deployments.

This version includes a USB Type-C adapter board and FFC cable, allowing convenient power supply and programming during development.

With multiple peripheral interfaces, onboard flash and PSRAM, and extensive development resources, the board is suitable for applications such as industrial telemetry, environmental monitoring, smart home systems, and remote data acquisition.

Processor

• ESP32-S3

• Dual-core Xtensa LX7

• Up to 240 MHz

• 512KB SRAM

• 384KB ROM

• 4MB Flash

• 2MB PSRAM

Wireless Communication

LoRa

• RF Chip: LR1121

• Modulation: LoRa / (G)FSK / LR-FHSS

• Data Rate

  • LoRa: 0.091 Kbps – 62.5 Kbps

  • (G)FSK: 0.6 Kbps – 300 Kbps

Frequency Range (HF Version)

• 850 – 930 MHz

• 2.0 – 2.5 GHz ISM

Typical Range

• Sub-GHz: up to 5 km

• 2.4 GHz: up to 2 km

Output Power

• Sub-GHz: -9 dBm to 22 dBm

• 2.4 GHz ISM: -18 dBm to 13 dBm

Interfaces

• 4 × SPI

• 2 × I²C

• 3 × UART

• 2 × I²S

• 2 × ADC

• 21 × GPIO

• Castellated edge / 2.54 mm solder holes

• IPEX-1 antenna connector

Package Contents

• ESP32-S3-LR1121-HF LoRa Development Board

• USB Type-C adapter board

• FFC cable

• LoRa antenna