{"title":"Adafruit Feather 32u4 Adalogger","handle":"adafruit-feather-32u4-adalogger","url":"/products/adafruit-feather-32u4-adalogger","description":"The Feather 32u4 Adalogger is an all-in-one datalogger built around the ATmega32u4, with a built-in MicroSD card holder, USB connectivity, and LiPo battery charging. Ready to log data straight out of the box — just add a MicroSD card and start recording.\n\nThe ATmega32u4 runs at 8 MHz with 3.3V logic and includes native USB support, so it can act as a serial device, keyboard, mouse, or USB MIDI controller without needing a separate USB-serial chip. Built-in battery charging and automatic USB/battery power switching make it ideal for portable data logging projects.\n\nKey Features\n\n\nATmega32u4 @ 8 MHz – 3.3V logic, 32KB flash, 2KB RAM\n\nNative USB – Built-in USB bootloader, serial debugging, and HID device support\n\nMicroSD Card Holder – For extensive data storage and reading\n\n20 GPIO Pins – Including 10 analogue inputs and 7 PWM outputs\n\nHardware Serial, I2C & SPI – Full peripheral support\n\nBuilt-in LiPo Charger – 100 mA charging with status indicator LED\n\nBattery Monitoring – Battery voltage routed to an analogue pin via divider\n\n3.3V Regulator – 500 mA peak current output\n\nPin #8 Green LED – Additional LED for logging status indication\n\nPin #13 Red LED – General-purpose blinking\n\n\nSpecifications\n\n\nDimensions – 51 × 23 × 8 mm (without headers)\n\nWeight – 5.1 g\n\nMounting – 4 mounting holes\n\n\nAlso Available\n\n\nFeather 32u4 Basic Proto – With prototyping area\n\nFeather 32u4 Bluefruit LE – With Bluetooth Low Energy\nFeather 32u4 RFM95 LoRa Radio (868/915 MHz)\nFeather 32u4 RFM96 LoRa Radio (433 MHz)\n\nFeather 32u4 FONA – With cellular connectivity\n\nFeather 328P – ATmega328P variant\n\n\nIdeal For\n\nPortable data logging and environmental monitoring\nSensor data recording to MicroSD card\nBattery-powered field deployments\n\n\nPackage Contents\n\n1× Assembled and tested Feather 32u4 Adalogger\n1× Header set\n\n\n\nNote: LiPo battery, MicroSD card, and USB cable are sold separately.\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":10174,"title":"Default Title","sku":"AF-2795","price":42.82,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}