Elecrow LoRa Node Expansion Board-nRFLR1110 Integrates nRF52840

This is a LoRa IoT node module built around the nRFLR1110 module, which combines a Nordic nRF52840 processor with a Semtech LR1110 baseband chip. It supports both LoRa point-to-point transparent transmission and the standard LoRaWAN network protocol, making it a complete communication solution for long-distance, low-power IoT deployments. Firmware is available for 868 MHz and 915 MHz regions. The board is designed for outdoor deployment and rapid prototyping. It includes a lithium battery charge/discharge management circuit and a dedicated solar panel interface for green energy operation in the field. Six standard sensor interfaces (2 digital, 2 analog, 1 I2C, 1 UART) allow direct plug-and-play connection to Crowtail sensor modules. A built-in GNSS module supports GPS and BeiDou dual satellite positioning. Onboard user-defined buttons and pin headers give developers flexibility for secondary development. Key Features Dual-Mode LoRa Communication Based on nRFLR1110 (nRF52840 + Semtech LR1110) Supports LoRa point-to-point transparent transmission and LoRaWAN network access Operates at 868 MHz and 915 MHz; firmware provided for both regions TX power up to +20 dBm; receive sensitivity −144 dBm at SF12/125 kHz Range: 5–6 km typical, up to 15 km (antenna and environment dependent) Green Energy Support Built-in lithium battery charge/discharge management circuit Dedicated solar panel interface for self-sufficient outdoor nodes Suitable for long-term unattended field deployment Rich Sensor Interfaces 2 × digital (D0, D1), 2 × analog (A0, A1), 1 × I2C, 1 × UART Plug-and-play with Crowtail sensor modules (temperature, humidity, air quality, and more) Built-in GNSS Positioning Supports GPS and BeiDou dual satellite systems Wi-Fi sniffer and Bluetooth 5.3 / BLE / mesh also available for positioning and connectivity Developer-Friendly Design Onboard user-defined function button and reset button Pin headers included for flexible soldering and secondary development Three LED indicators: power (red), charging (green), user-defined (blue) Applications Smart Cities Smart Agriculture Industrial Automation Environmental Monitoring Smart Homes Logistics Management Healthcare Technical Specifications Category Specification Main Chip CPU / SoC Nordic nRF52840, single-core 32-bit, 64 MHz Baseband Chip Semtech LR1110IMLTRT (via nRFLR1110 module) System Memory 256 KB RAM Storage 1 MB Flash (onboard), 8 MB Flash (external) LoRa Communication Module nRFLR1110 TX Power +20 dBm (max) Receive Sensitivity −144 dBm @ SF12/125 kHz Link Budget 166 dB Data Rate 0.076–62.5 kbps Modulation LoRa / (G)FSK / LR-FHSS / Sigfox Spreading Factor SF5–SF12 Frequency 850–930 MHz (868 MHz and 915 MHz firmware) Range 5–6 km typical; up to 15 km max Other Wireless Wi-Fi Wi-Fi Sniffer Bluetooth Bluetooth 5.3, BLE, mesh network GNSS Built-in GPS / BeiDou dual satellite Interfaces & Buttons Interfaces 1 × USB Type-C 1 × Wi-Fi / GNSS / LoRa antenna connector 1 × D0, 1 × D1 (digital) 1 × A0, 1 × A1 (analog) 1 × Battery interface 1 × Solar interface 1 × I2C 1 × UART Buttons 1 × Reset, 1 × User-defined LED Indicators Red: power | Green: charging | Blue: user-defined Power & Environment Supply Voltage 5.0 V (typical) I/O Voltage 3.3 V (typical) Clock 32 MHz TCXO Operating Temperature −30°C to +85°C Storage Temperature −30°C to +85°C Mechanical Dimensions 75 × 55 × 7.5 mm Technical Documents Wiki LoRa is a registered trademark of Semtech Corporation. LoRaWAN is a trademark of the LoRa Alliance. MCCI and MCCI Catena are registered trademarks of MCCI Corporation. All other trademarks are the property of their respective owners.