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 Pro Trinket 5V 16MHz is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. A compact ATmega328P development board that offers Arduino-compatible workflows in a smaller form factor.
Compact controllers, Wearables and props, Small automation prototypes.
Adafruit Pro Trinket 5V 16MHz 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 | ATmega328P |
|---|---|
| Clock | 16 MHz |
| Logic level | 5V |
| Flash | 28KB usable |
| RAM | 2KB |
| Power | USB or external input |
Pins 2 and 7 are reserved for USB. Best for maintaining legacy Pro Trinket projects; Adafruit notes newer boards are easier on modern computers.
Board and header strip.
Manufacturer product page: https://www.adafruit.com/product/2000
Guide / tutorial: https://learn.adafruit.com/introducing-pro-trinket
Datasheet / downloads / documentation: https://learn.adafruit.com/introducing-pro-trinket
A: Most Arduino sketches that fit the available flash and pin constraints can be adapted.
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 →