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 →The Leonardo R3 ATmega32U4 Microcontroller Development Board is an Arduino-compatible board for learning, prototyping, and building interactive electronics projects. It uses the ATmega32U4 controller, which supports USB communication directly from the chip.
This board is a good choice for projects that need keyboard, mouse, or USB-style input control. It also works well for sensors, LEDs, buttons, motors, and other common maker projects.
With 20 digital I/O pins, 7 PWM channels, and 12 analog inputs, it gives you more connection options for experiments and builds.
Features:
ATmega32U4 microcontroller
16MHz clock speed
5V working voltage
Recommended input voltage: 7–12V
20 digital I/O pins
7 PWM channels
12 analog inputs
32KB flash memory
2.5KB SRAM
1KB EEPROM
Great for USB HID, sensor, and control projects
Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.
Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.
Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.
Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.
7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.
Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.
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 →