Adafruit Feather RP2040 Adalogger - 8MB Flash with microSD Card

The Feather RP2040 Adalogger combines the RP2040 dual-core processor with a MicroSD card holder for data logging and file storage. It features 8 MB SPI flash, 264 KB SRAM, USB Type C, STEMMA QT connector, and built-in LiPo battery charging — ready for portable data recording projects with Arduino, CircuitPython, or MicroPython.

The MicroSD card socket is wired for SPI (with optional SDIO support on DAT1/DAT2 pins for advanced users). Combined with the RP2040's processing power and generous RAM for buffering, this board handles high-throughput data logging with ease.

Key Features

• RP2040 Processor – Dual ARM Cortex M0+ cores at ~133 MHz, 3.3V logic
• 264 KB SRAM – Large buffer for data processing before writing to SD
• 8 MB SPI Flash – For CircuitPython/MicroPython code and file storage
• MicroSD Card Holder – SPI-connected on pins 18, 19, 20 (CS on pin 23) with optional card detect on pin 15
• USB Type C – Native USB with UF2 bootloader
• STEMMA QT / Qwiic – On-board I2C connector for solderless sensor connections
• NeoPixel – On-board RGB LED for status feedback
• 21 GPIO Pins – 4× 12-bit ADC, 16× PWM, 2× I2C, 2× SPI, 2× UART
• LiPo Battery Support – JST connector with built-in 200 mA+ charger and charging status LED
• Bootloader + Reset Buttons – Both BOOTSEL and reset buttons on-board
• Compact Design – 50.8 mm × 22.8 mm × 7 mm, weighing 6.3 g

Also Available

• Feather RP2040 – Base model without MicroSD
• Feather RP2040 SCORPIO – 8-channel NeoPixel driver
• Feather RP2040 RFM69 868/915 MHz – Packet radio
• Feather RP2040 RFM95 LoRa 915 MHz – Long-range LoRa radio
• Feather RP2040 USB Type A Host – With USB host port
• Feather RP2040 DVI – With HDMI-compatible DVI output

Ideal For

• Environmental data logging with external sensors
• Portable data recording to MicroSD
• CircuitPython projects requiring file storage
• Battery-powered sensor networks

Package Contents

• 1× Feather RP2040 Adalogger
• 1× Header pin set