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 →NFC Tag (13.56MHz) is widely used in electronic locks or customer identification as well as other systems where a small and easy to carry tag is desired.The tag contains a NXP S50 chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away.
This Mifare-One NFC tag can be read by almost any 13.56MHz RFID/NFC reader or NFC-enabled mobile devices.These chips can be written to & store up to 1 KB of data in writable EEPROM divided into banks, and can handle over 100,000 re-writes.Every sticker has a permanent 4-byte ID burned into the chip that you can use to identify one tag from another - the ID number cannot be changed.
The NXP TagWriter application will be helpful to format(NDEF exchange protocol) and easy to store the contacts, bookmarks, geo location, Bluetooth Handover, SMS, Mail, text messages and many more to NFC tags and stickers.
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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.
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