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 →The Infrared Reflective Sensor Grove is an infrared proximity sensor designed for presence sensing, short-range detection, and touchless automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Operating voltage: 4.5 V - 5.5 V; Interface: Digital GPIO; High resolution sensor; minimum detectable length: 1mm black line.
| Product | Sensor style | Standout |
|---|---|---|
| Infrared Reflective Sensor Grove | infrared proximity sensor | Current item |
| UV Sensor Grove | light sensor with analog output | general-purpose sensing |
| Reflective Optical Sensor with Transistor Output CNY70 | optical interrupter sensor | infrared sensing, temperature sensing |
| Line Tracking Sensor Module Grove | line tracking sensor with digital output | digital output, infrared sensing |
This sensor is a good fit for touchless dispensers, object counters, door triggers, small robots, and presence alarms.
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.
Useful add-ons include a microcontroller board, jumper wires, and pull-up or pull-down support when needed, depending on how you plan to power, mount, and log the sensor.
| Product | Infrared Reflective Sensor Grove |
|---|---|
| High resolution sensor; minimum detectable length | 1mm black line |
| Operating voltage | 4.5 V - 5.5 V |
| Interface | Digital GPIO |
| Category | optical light imaging photon sensors |
Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code. Infrared and optical readings change with target color, surface finish, distance, and strong ambient light. Test with your real target before final mounting.
1 × Infrared Reflective Sensor Grove
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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 →