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 OEP30W Mono Digital Amplifier Module delivers 30 watts of clean audio power to a single speaker channel. Its small footprint and simple wiring make it ideal for powered speaker builds, intercom systems, public address setups, and any project that needs more volume than a tiny Class D breakout can provide.
| Module | Power | Channels | Best for |
|---|---|---|---|
| OEP20W | 20W | Mono | Medium speaker, lower budget |
| OEP30W (this) | 30W | Mono | Louder single-speaker builds |
| OEP30WX2 | 2×30W | Dual/Stereo | Stereo pair or bi-amp |
| TPA3118 60W | 60W | Mono BTL | High-power single driver |
| Chip | OEP30W |
|---|---|
| Output Power | 30W (mono) |
| Channels | 1 (mono) |
| Class | Class D (digital) |
| Speaker Impedance | 4Ω–8Ω |
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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 →