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, the limits set by OFCOM (BAKOM) apply to the 863 to 870 MHz band. The European rules (CEPT) allow for example a maximum of 25 mW ERP in the range 868.0 to 868.6 MHz. The module transmits with up to 20 dBm (100 mW) and can exceed this value. Set the transmit power correspondingly lower in the program, it is adjustable from -1 dBm.

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

Documentation:

• 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