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 808 Mini Cellular GSM + GPS Breakout is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. A compact cellular breakout that combines GSM, SMS, voice, GPRS data, and GPS capabilities in one board.
GPS trackers, SMS alert systems, Remote telemetry nodes.
Adafruit FONA 808 Mini Cellular GSM + GPS Breakout 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 | SIM808 |
|---|---|
| Functions | Voice, SMS, GPRS, GPS |
| Form factor | 1.75 x 1.6 inches approx. |
| Audio | Headset / speaker support |
| Power | LiPo battery connector + USB |
| Antenna | Cellular and GPS antenna connections |
This is a legacy 2G/GSM-era module. Network support depends on carrier availability in your region.
Breakout board and header.
Manufacturer product page: https://www.adafruit.com/product/2542
Guide / tutorial: https://learn.adafruit.com/adafruit-fona-808-cellular-plus-gps-breakout
Datasheet / downloads / documentation: https://learn.adafruit.com/adafruit-fona-808-cellular-plus-gps-breakout
A: Yes, it is commonly used for projects that combine GPS data with cellular messaging.
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 →