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 →This is an Arduino Leonardo with SIM808 GSM/GPRS/GPS. The SIM808 with Leonardo mainboard is the latest Arduino board developed by DFRobot for multi-purpose applications. The onboard SIM808 module includes an integrated quad-band GSM/GPRS and GPS satellite navigation module, and a 4 layer PCB integrates the microcontroller, microphone, headphone jack and GPRS/GPS, giving this board the tiny footprint of a regular credit card! Meanwhile, the board includes a sleep mode feature for extra-low power consumption. And an on-board 3.7V Lipo battery power supply and battery-charging circuit has been integrated into the board, making it ideal for applications such as real-time car tracking, security patrolling and IoT projects.
Compared with the existing SIM808 modules on the market, this SIM808 uses the latest version with better stability.
Satellite positioning; Real-time car tracking systems; Security; Internet of things (IoT)
A solid starter setup includes a USB cable, breadboard, jumper wires, and a few DFRobot Gravity sensors or an LCD module for quick testing.
Useful add-ons include sensors, displays, shields, breadboards, headers, and enclosures if you are building a complete prototype or classroom kit.
| Product | SIM808 GSM GPRS GPS IOT Board Arduino Compatible |
|---|---|
| SKU | DFR0355 |
| Brand | DFRobot |
| Interface | PWM, Analog, Digital, USB, Bluetooth, GSM, GPRS, GPS |
| AVR Arduino MCU | ATmega32u4 (Bootloader: Leonardo) |
| Operating voltage | 5V |
| Input Voltage | 5V (USB)/7~23V(Vin)/3.5~4.3V (BAT) |
| Low-power consumption | (100mA@7V-GSM mode) |
| Digital I/O Pins | 20 |
| PWM Channels | 7 |
Check the supported input voltage before wiring so the module matches your controller and power source. For analog readings, use a stable reference and keep wiring short when possible for cleaner signals.
Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki
Related Documents
1 × SIM808 GSM GPRS GPS IOT Board Arduino Compatible
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
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 →