The Feather 32u4 RFM96 LoRa Radio (433 MHz) combines an ATmega32u4 microcontroller with an SX1276 LoRa radio transceiver operating at 433 MHz, 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.

The 433 MHz band is available as a license-free ISM band in many regions (ITU Region 1) and as an amateur radio band in others. Check your local regulations for permitted use.

Key Features

• ATmega32u4 @ 8 MHz – 3.3V logic, 32KB flash, 2KB RAM
• Native USB – Built-in USB bootloader, serial debugging, and HID device support
• RFM96 LoRa Radio (SX1276) – 433 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 – 433 MHz
• Mounting – 4 mounting holes

Also Available

• Feather 32u4 RFM95 LoRa Radio (868/915 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 at 433 MHz
• 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 RFM96 LoRa Radio
• 1× Header set