The LILYGO T3 S3 LR1121 is an advanced ESP32-S3 -based development board featuring the Semtech LR1121 LoRa transceiver. Designed for long-range wireless communication, IoT applications, and low-power networking, it operates on both 830-945MHz and 2.4GHz frequencies. This board is ideal for remote sensing, asset tracking, and smart agriculture projects.
Key Features
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MCU: ESP32-S3FH4R2 with Wi-Fi 802.11 b/g/n and Bluetooth 5.0
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LoRa Transceiver: Semtech LR1121
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Frequency Range: 830~945MHz & 2.4GHz
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Power Gain: +22dBm (sub-GHz), +11.5dBm (2.4GHz)
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Memory: 4MB Flash, 2MB PSRAM
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Display: 0.96-inch SSD1306 I2C OLED (128x64 resolution)
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Interfaces: UART, SPI, I2C, CAN, I2S, SDIO
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USB Charging: 500mA at 5V
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TF Card Support: Yes
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Power Management: Integrated voltage regulation for stable operation
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Antenna: External SMA antenna included for enhanced signal reception
Specifications
| Component | Details |
|---|---|
| MCU | ESP32-S3FH4R2 |
| Flash | 4MB |
| PSRAM | 2MB |
| Wireless Protocols | Wi-Fi 802.11 b/g/n, Bluetooth 5.0 |
| LoRa Transceiver | Semtech LR1121 |
| Frequency | 830-945MHz & 2.4GHz |
| Power Gain | +22dBm (sub-GHz), +11.5dBm (2.4GHz) |
| Interfaces | UART, SPI, I2C, CAN, I2S, SDIO |
| Display | 0.96-inch SSD1306 OLED (128x64) |
| USB Charging | 500mA at 5V |
| Dimensions | 66 x 36 mm |
| TF Card Slot | Supported |
Pin diagram
Includes
Applications
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LoRaWAN and IoT Networks
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Smart Agriculture
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Environmental Monitoring
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Remote Sensing and Asset Tracking
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Industrial Automation
GitHub Support