FireBeetle Covers LoRa Radio Module 868MHz

This DFRobot FireBeetle cover brings LoRa at 868 MHz with the SX1276 chip and a built-in power amplifier. It plugs onto a FireBeetle board, but can also be connected to other microcontrollers via SPI. The data rate is up to 300 Kbit/s with FSK and up to 37.5 Kbit/s with LoRa. In sleep mode the module needs less than 0.2 µA and is therefore suitable for battery operation.

Important: In Switzerland, a maximum of 25 mW (14 dBm) usually applies in the 868 MHz band. The transmit power is set in the program.

Recommended Accessories:

• FireBeetle 2 Board ESP32-E
• FireBeetle ESP32 IOT Microcontroller with WiFi

Features:

• SX1276 chip, 868 MHz frequency band
• Modulation FSK, GFSK, MSK, GMSK, LoRa and OOK
• 868 MHz antenna with IPEX connector included, plus an SMA connector for soldering
• CS and RESET are connected to D2, D3, D4 or D5, guide in the wiki
• DIO0 to DIO5 brought out on the board
• DFRobot_Lora library from DFRobot

Application Examples:

• Irrigation systems
• Smart metering
• Sensor networks
• Building automation
• Integration into Home Assistant with ESPHome

Documentation:

• ESPHome documentation: SX127x Component
• DFRobot Wiki
• Schematic (PDF)
• DFRobot_Lora library (GitHub)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: TEL0125
• Chip: SX1276
• Operating voltage: 3.3 V
• Frequency: 868 MHz, range 800 MHz to 900 MHz
• Modulation: LoRa, FSK, GFSK, OOK
• Transmit power: -1 dBm to 20 dBm
• Sensitivity: -139 dBm (LoRa)
• Transmit current: max. 120 mA
• Receive current: max. 15 mA
• Sleep current: max. 0.2 µA
• Data rate: FSK 1.2 to 300 Kbit/s, LoRa 0.018 to 37.5 Kbit/s
• Range: up to 5 km
• Transmission mode: FIFO / DMA
• FIFO: 256 bytes
• Maximum RSSI: 127 dB
• CRC and frequency hopping
• Protection against electrostatic discharge at the antenna (DFRobot specification)
• Interface: SPI, 5 GPIO
• Operating temperature: -20 °C to 70 °C
• Mounting hole: 3.1 mm
• Dimensions: 58 × 29 mm

Scope of Delivery:

• 1× FireBeetle Covers LoRa Radio Module 868MHz
• 2× pin header 1×18 pin
• 2× pin header 2×6 pin
• 2× female header long pins 1×18 pin
• 1× 868 MHz antenna
• 1× SMA-KE antenna connector for soldering