Elecrow LoRa Node Expansion Board-nRFLR1110 Integrates nRF52840
Elecrow LoRa Node Expansion Board-nRFLR1110 Integrates nRF52840
SKU:123004207
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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
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.
