The Feather 32u4 RFM95 LoRa Radio (868/915 MHz) combines an ATmega32u4 microcontroller with an SX1276 LoRa radio transceiver, USB connectivity, and LiPo battery charging. LoRa modulation provides dramatically longer range than standard packet radio — over 2 km line-of-sight with default settings and a simple wire antenna, and up to 20 km with tuning and directional antennas.

This is the 900 MHz LoRa version, which can be software-tuned for either 868 MHz or 915 MHz operation in the license-free ISM bands.

Key Features

• ATmega32u4 @ 8 MHz – 3.3V logic, 32KB flash, 2KB RAM
• Native USB – Built-in USB bootloader, serial debugging, and HID device support
• RFM95 LoRa Radio (SX1276) – 868/915 MHz LoRa transceiver with SPI interface
• +5 to +20 dBm Output – Up to 100 mW selectable in software
• 2+ km Range – Line-of-sight with default settings; up to 20 km with directional antennas
• Ultra-Low Sleep Current – ~300 µA in full sleep mode
• ~120 mA TX at +20 dBm – ~40 mA during active radio listening
• 20 GPIO Pins – Including 10 analogue inputs and 7 PWM outputs
• Hardware Serial, I2C & SPI – Full peripheral support
• Built-in LiPo Charger – 100 mA charging with status indicator LED
• Battery Monitoring – Battery voltage routed to an analogue pin via divider
• 3.3V Regulator – 500 mA peak current output

Specifications

• Dimensions – 51 × 23 × 8 mm (without headers)
• Weight – 5.5 g
• Frequency – 868 or 915 MHz (ISM band, software-selectable)
• Mounting – 4 mounting holes

Also Available

• Feather 32u4 RFM96 LoRa Radio (433 MHz)
• Feather 32u4 RFM69HCW Packet Radio (868/915 MHz) – Shorter range, AES-128 encryption
• Feather 32u4 Bluefruit LE – With Bluetooth Low Energy
• Feather 32u4 Adalogger – With MicroSD card holder
• Feather 32u4 Basic Proto – With prototyping area

Ideal For

• Long-range wireless sensor networks
• Remote telemetry and environmental monitoring
• LoRa mesh and point-to-point links
• Battery-powered field deployments requiring kilometre-scale range

Package Contents

• 1× Assembled and tested Feather 32u4 RFM95 LoRa Radio
• 1× Header set