# Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz > ATmega32u4 Feather board with RFM95W SX1276 LoRa radio for 868/915 MHz long-range communication. Achieves 2+ km range, supports spreading factors SF6-SF12, and includes a built-in LiPo charger. ## Quick Facts - **Brand:** Adafruit - **Board Type:** dev-board - **Price:** ~$34.95 - **Product Readiness:** developer - **CPU:** ATmega32u4 @ 8 MHz - **CPU Architecture:** AVR 8-bit - **CPU Cores:** 1 - **RAM:** 2.5KB SRAM - **Flash:** 32KB - **Power:** 5V + LiPo - **Operating Voltage:** 3.3V - **Dimensions:** 51 × 23 × 8 mm - **Weight:** 5.5g - **Antenna:** U.FL/IPEX ## Connectivity - **Lora:** SX1276 868/915MHz ## Open Source - **Firmware:** Yes - **Schematics:** Yes - **PCB Layout:** Yes ## Compatible Firmware arduino ## Use Cases - lora-iot - long-range-iot - lorawan-gateway - remote-sensor-nodes - iot - prototyping ## Components - **ATmega32u4** (mcu): 8-bit AVR microcontroller at 8MHz, 3.3V, native USB, 32KB flash, 2.5KB SRAM. — [Datasheet](https://openhardware.directory/r?to=http%3A%2F%2Fwww.atmel.com%2FImages%2FAtmel-7766-8-bit-AVR-ATmega16U4-32U4_Datasheet.pdf&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) - **RFM95W (SX1276)** (lora-module): HopeRF RFM95W LoRa module based on Semtech SX1276, 868/915MHz, +5 to +20dBm TX, SF6-SF12, >2km range. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F3179%2Fsx1276_77_78_79.pdf&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) ## Protocols - **SPI**: MOSI: D16, MISO: D14, SCK: D15 - **I2C**: SDA: D2, SCL: D3 - **UART**: TX: D1, RX: D0 - **LoRa**: - **LoRaWAN**: ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | D0 | RX — UART Receive | UART | digital-input, digital-output | | D1 | TX — UART Transmit | UART | digital-input, digital-output | | D5 | D5 — GPIO / PWM | — | digital-input, digital-output, pwm | | D6 | D6 — GPIO / PWM | — | digital-input, digital-output, pwm | | D9 | D9 — GPIO / PWM / Analog | — | digital-input, digital-output, pwm, analog-input | | D10 | D10 — GPIO / PWM | — | digital-input, digital-output, pwm | | D16 | D11/MOSI — SPI MOSI | SPI | digital-input, digital-output | | D14 | D12/MISO — SPI MISO | SPI | digital-input, digital-output | | D15 | D13/SCK — SPI Clock / LED | SPI | digital-input, digital-output | | D2 | SDA — I2C Data | I2C | digital-input, digital-output | | D3 | SCL — I2C Clock | I2C | digital-input, digital-output | | D15 | A0 — Analog In | — | analog-input | | D4 | A1 — Analog In | — | analog-input | | D5 | A2 — Analog In | — | analog-input | | D12 | A3 — Analog In | — | analog-input | | D24 | A4/SDA — Analog In / I2C SDA | I2C | analog-input, digital-input, digital-output | | D25 | A5/SCL — Analog In / I2C SCL | I2C | analog-input, digital-input, digital-output | ## Description ## Overview The Adafruit Feather 32u4 RFM95 LoRa (868/915 MHz) brings long-range LoRa radio connectivity to the compact Feather platform. The board pairs the ATmega32u4 at 8 MHz with HopeRF's RFM95W module built on the Semtech SX1276 LoRa chipset, targeting the 868 MHz (Europe) and 915 MHz (Americas) ISM bands. LoRa's chirp spread spectrum modulation enables remarkable link budgets — the board achieves over 2 km of range with simple quarter-wave wire antennas, and distances beyond 20 km are possible with directional antennas and optimal spreading factor settings. Transmit power is adjustable from +5 to +20 dBm, allowing trade-offs between range and current consumption. The board supports the full Feather ecosystem: 20 GPIO, 10 analog inputs, 7 PWM channels, hardware SPI/I2C/UART, native USB, and a 100mA LiPo battery charger. A u.FL connector allows swapping the wire antenna for external directional or gain antennas. Adafruit's RadioHead library and the LMIC LoRaWAN stack both work with this board, enabling both raw LoRa packet communication and LoRaWAN network connectivity. This board is ideal for remote sensor nodes, environmental monitors, asset trackers, and any application requiring long-range wireless data with minimal power consumption. ## Where to Buy - [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F3078&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) — 34.95 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F3078&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) - [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fadafruit%2FAdafruit-Feather-32u4-RFM-LoRa-PCB&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) - [wiki](https://openhardware.directory/r?to=https%3A%2F%2Flearn.adafruit.com%2Fadafruit-feather-32u4-radio-with-lora-radio-module%2Foverview&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) - [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F3179%2Fsx1276_77_78_79.pdf&ref=openhardware.directory&product=adafruit-feather-32u4-rfm95-lora-868-915&source=md-export) ## Tags `feather`, `lora`, `sx1276`, `rfm95`, `868mhz`, `915mhz`, `lorawan`, `atmega32u4`, `adafruit` ## Images ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/a06a769fd110.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/11df76a67ae2.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/7a432820c0a6.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/0ad0b59d2ab5.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/d6105bd7f52d.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/2011ac81327e.jpg) ![Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-32u4-rfm95-lora-868-915/7a370dab5172.jpg) --- [View full device page](https://openhardware.directory/devices/adafruit-feather-32u4-rfm95-lora-868-915)