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 IR Break Beam Sensor 5mm LEDs is an infrared proximity sensor designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Power Voltage: 3.3 - 5.5VDC; Output Current Capability of receiver: 100mA sink.
| Product | Sensor style | Standout |
|---|---|---|
| IR Break Beam Sensor 5mm LEDs | infrared proximity sensor | Current item |
| Distance Sensor 10-80cm GP2Y0A21YK0F Sharp | infrared distance sensor with digital output | adjustable sensing range, infrared sensing |
| Motion PIR Sensor Gravity | proximity presence sensor module with digital output | infrared sensing |
| PIR Motion Sensor Module Digital HC-SR501 | proximity presence sensor module with digital output | digital output |
This sensor is a good fit for robot obstacle avoidance, touchless dispensers, automatic doors, object counters, parking aids, and level 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 | IR Break Beam Sensor 5mm LEDs |
|---|---|
| Output Current Capability of receiver | 100mA sink |
| Power Voltage | 3.3 - 5.5VDC |
| Emitter Current Draw | 10mA @ 3.3V, 20mA @ 5V |
| Dimensions | 20mm x 10mm x 8mm / 0.8" x 0.4" x 0.3" |
| Cable Length | 250mm / 10" |
| Response Time | <2 ms |
| Sensing Distance | Approx 25cm / 10" |
| Weight (of each half) | 3g |
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.
1 × IR Break Beam Sensor 5mm LEDs
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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 →