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 Tiny Adjustable 3 - 100cm Sensor Switch is a button or switch input module 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 Range: 3-100cm adjustable; Power supply: 3.8v-5.5v.
| Product | Sensor style | Standout |
|---|---|---|
| Infrared Tiny Adjustable 3 - 100cm Sensor Switch | button or switch input module | Current item |
| Distance Sensor 10-80cm GP2Y0A21YK0F Sharp | infrared distance sensor with digital output | adjustable sensing range, infrared sensing |
| Infrared Sensor Adjustable E18-D80NK | infrared proximity sensor with digital output | adjustable sensing range, infrared sensing |
| TCRT5000 Infrared Reflectance Obstacle Avoidance Module | infrared proximity sensor with 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 or jumper wires for quick setup and testing.
Useful add-ons include breadboards, jumper wires, displays, enclosures, and logging modules, depending on how you plan to power, mount, and log the sensor.
| Product | Infrared Tiny Adjustable 3 - 100cm Sensor Switch |
|---|---|
| Range | 3-100cm adjustable |
| Power supply | 3.8v-5.5v |
| Current(5v) | 6mA |
| Category | proximity presence sensors |
Check the pin labels on the Infrared Tiny Adjustable 3 - 100cm Sensor Switch and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. 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 Tiny Adjustable 3 - 100cm Sensor Switch
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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 →