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 →Power your Raspberry Pi 4/400 the right way. This is the official 15W USB-C power supply from Raspberry Pi, delivering a clean 5.1V / 3A over a durable 1.5 m, 18-AWG captive cable—perfect for stable performance and fewer undervoltage warnings.
| Input | 100–240V AC, 50/60 Hz |
| Output | 5.1V DC, 3.0A (15.3W) |
| Connector | USB-C (captive cable) |
| Cable | 1.5 m, 18-AWG |
| Plug | US type |
| Protections | Short-circuit, over-current, over-temperature |
| Compatibility | Raspberry Pi 4 Model B, Raspberry Pi 400 |
| Not for | Raspberry Pi 5 (use the 27W 5V/5A PSU) |
| SKU | 4298 |
Tip: Building a Pi 5 setup? Use the official 27W USB-C Power Supply to unlock 5V/5A power and higher USB peripheral current.
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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 →