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 FONA Mini Cellular GSM Breakout uFL Version is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. A compact GSM breakout for adding voice, SMS, and GPRS data to electronics projects with an external antenna connection.
SMS notifiers, Cellular dialers, Remote data projects.
Adafruit FONA Mini Cellular GSM Breakout uFL Version 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.
| Module | SIM800 series |
|---|---|
| Network | Quad-band GSM 850/900/1800/1900 MHz |
| Functions | Voice, SMS, GPRS, FM radio |
| Antenna | uFL connector |
| Audio | Speaker and microphone support |
| Power | LiPo battery connector + USB |
2G/GSM support depends on current carrier availability in your area.
Breakout board and header.
Manufacturer product page: https://www.adafruit.com/product/1946
Guide / tutorial: https://learn.adafruit.com/adafruit-fona-mini-gsm-gprs-cellular-phone-module
Datasheet / downloads / documentation: https://learn.adafruit.com/adafruit-fona-mini-gsm-gprs-cellular-phone-module
A: It lets you use an external antenna through the uFL connector.
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.
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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 →