# Adafruit Feather RP2040 with RFM95 LoRa 915 MHz > RP2040 Feather with integrated RFM95W LoRa radio at 915 MHz (SX1276), 8MB flash, up to 20 km range, LiPo charging, STEMMA QT, and uFL antenna connector. ## Quick Facts - **Brand:** Adafruit - **Board Type:** feather - **Price:** ~$29.95 - **Product Readiness:** developer - **CPU:** RP2040 - **CPU Architecture:** ARM Cortex-M0+ - **CPU Cores:** 2 - **RAM:** 264 KB - **Flash:** 8 MB - **Power:** 5V + LiPo - **Operating Voltage:** 3.3V - **Dimensions:** 50.8 x 22.8 x 7 mm - **Weight:** 6.3 g - **Antenna:** uFL/IPEX ## Connectivity - **Lora:** SX1276 915MHz ## Open Source - **Firmware:** Yes - **Schematics:** No - **PCB Layout:** No ## Certifications RoHS ## Compatible Firmware circuitpython, micropython, arduino ## Use Cases - iot - lorawan - wireless-sensor-network - asset-tracking - prototyping ## Components - **RP2040** (mcu): Dual-core ARM Cortex-M0+ at 133 MHz, 264KB SRAM. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.raspberrypi.com%2Frp2040%2Frp2040-datasheet.pdf&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) - **RFM95W** (radio): SX1276-based 868/915 MHz LoRa transceiver, +20 dBm, up to 20 km range, SPI. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5714%2FSX1276-7-8.pdf&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) ## Protocols - **I2C**: SDA: GPIO24, SCL: GPIO25 - **SPI**: MOSI: GPIO11, MISO: GPIO12, SCK: GPIO13, CS: GPIO10 - **UART**: TX: GPIO0, RX: GPIO1 ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | GPIO0 | TX — UART | UART | digital-input, digital-output, pwm | | GPIO1 | RX — UART | UART | digital-input, digital-output, pwm | | GPIO2 | D2 — GPIO | — | digital-input, digital-output, pwm | | GPIO3 | D3 — GPIO | — | digital-input, digital-output, pwm | | GPIO4 | D4 — GPIO | — | digital-input, digital-output, pwm | | GPIO5 | D5 — GPIO | — | digital-input, digital-output, pwm | | GPIO6 | D6 — RFM95 CS | SPI | digital-input, digital-output, pwm | | GPIO7 | D7 — GPIO | — | digital-input, digital-output | | GPIO8 | D8 — GPIO | — | digital-input, digital-output | | GPIO9 | D9 — GPIO | — | digital-input, digital-output | | GPIO10 | RFM95 CS | SPI | digital-input, digital-output | | GPIO11 | MOSI — SPI | SPI | digital-input, digital-output | | GPIO12 | MISO — SPI | SPI | digital-input, digital-output | | GPIO13 | SCK — SPI | SPI | digital-input, digital-output | | GPIO14 | RFM95 IRQ | — | digital-input, interrupt | | GPIO15 | RFM95 RST | — | digital-output | | GPIO24 | SDA — I2C (STEMMA QT) | I2C | digital-input, digital-output | | GPIO25 | SCL — I2C (STEMMA QT) | I2C | digital-input, digital-output | | GPIO26 | A0 — ADC0 | ADC | analog-input, digital-input, digital-output | | GPIO27 | A1 — ADC1 | ADC | analog-input, digital-input, digital-output | | GPIO28 | A2 — ADC2 | ADC | analog-input, digital-input, digital-output | | GPIO29 | A3 — ADC3 | ADC | analog-input, digital-input, digital-output | ## Description ## Overview The Adafruit Feather RP2040 with RFM95 LoRa combines the dual-core RP2040 with the RFM95W LoRa transceiver module, based on the Semtech SX1276/7/8 chipset. LoRa's chirp spread spectrum modulation enables extremely long range — up to 2 km in typical urban environments and 20 km or more in open line-of-sight conditions — at very low power consumption, making it ideal for IoT sensor networks, asset tracking, and environmental monitoring. The RFM95W operates in the 868/915 MHz ISM band, outputs up to +20 dBm (100 mW), and draws as little as 300 µA in sleep mode. Connection is via SPI. Both a uFL connector for external antennas and a wire solder pad are included for flexible antenna options. The LoRa physical layer is compatible with LoRaWAN stacks for cloud connectivity. Built on the RP2040 with 264 KB SRAM and 8 MB SPI flash, the board follows the standard Adafruit Feather pinout and is fully compatible with CircuitPython, MicroPython, and Arduino with the Adafruit RFM9x library. Standard Feather accessories — LiPo charger, USB Type-C, STEMMA QT, status NeoPixel, four mounting holes — are all included. ## Where to Buy - [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5714&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) — 29.95 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5714&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) - [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5714%2FSX1276-7-8.pdf&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) - [learn guide](https://openhardware.directory/r?to=https%3A%2F%2Flearn.adafruit.com%2Ffeather-rp2040-rfm95&ref=openhardware.directory&product=adafruit-feather-rp2040-rfm95&source=md-export) ## Tags `adafruit`, `feather`, `rp2040`, `lora`, `rfm95`, `sx1276`, `915mhz`, `lorawan`, `circuitpython` ## Images ![Adafruit Feather RP2040 with RFM95 LoRa 915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-rp2040-rfm95/d0d6d5ea6170.jpg) ![Adafruit Feather RP2040 with RFM95 LoRa 915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-rp2040-rfm95/f9f991902b38.jpg) ![Adafruit Feather RP2040 with RFM95 LoRa 915 MHz](https://nbg1.your-objectstorage.com/openhardware-directory/entities/adafruit-feather-rp2040-rfm95/e55ad04d8c4e.jpg) --- [View full device page](https://openhardware.directory/devices/adafruit-feather-rp2040-rfm95)