Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →Adafruit Feather 32u4 Adalogger is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. A compact Feather-format ATmega32u4 board with built-in microSD storage and LiPo charging for portable logging projects.
Portable data loggers, Battery-powered field devices, Sensor recording projects.
Adafruit Feather 32u4 Adalogger is designed for makers, engineers, and educators who need a genuine Adafruit part with dependable documentation, known compatibility, and easy access to official support material. It is a practical choice for prototyping, testing, and repeatable electronics builds.
| MCU | ATmega32u4 |
|---|---|
| Clock | 8 MHz |
| Logic level | 3.3V |
| Storage | microSD card slot |
| Battery | LiPo charging built in |
| USB | Native USB via micro USB |
Ideal for portable sensor logging and battery-backed data collection.
Board only.
Manufacturer product page: https://www.adafruit.com/product/2795
Guide / tutorial: https://learn.adafruit.com/adafruit-feather-32u4-adalogger
Datasheet / downloads / documentation: https://cdn-shop.adafruit.com/product-files/2795/2795_pinout_v1_0.pdf
A: This version includes a built-in microSD card holder for datalogging.
Need this for a student build, prototype, or production-ready electronics project? Circuitrocks helps makers, schools, and developers source genuine Adafruit products with access to official documentation and manufacturer references.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Bench-test a 43 A motor driver before wiring the full project. Catches weak power, mis-pinning, and dead boards before they cost you time.
read tutorial →Coming from UNO and the Pico won't show a COM port? Here's the BOOTSEL trick, the driver fix, and the first sketch that actually works.
read tutorial →Share what you built. Photos, BOM, what worked, what didn't.
view thread →Symptom + what you tried + clear photo = answers within hours.
view thread →Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
view thread →