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 →
KY-031 Knocking Sensor Module – Product Description
The KY-031 Knocking Sensor Module is a compact digital sensor designed to detect knocks, taps, vibrations, and physical impacts. It uses a spring-based switch mechanism that momentarily changes its output state whenever a vibration or knock is detected, making it ideal for projects that require simple impact detection.
Operating on 3.3V to 5V, the module is fully compatible with popular microcontroller platforms such as Arduino, ESP32, ESP8266, Raspberry Pi, and other embedded systems. Its digital output allows for easy integration into electronic projects without requiring complex signal processing.
Features
-
Detects knocks, taps, and vibrations with high reliability
-
Digital output for simple microcontroller interfacing
-
Operating voltage: 3.3V–5V DC
-
Compact, lightweight, and easy to install
-
Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and similar development boards
Applications
-
Security and intrusion alarm systems
-
Door knock or tap detection
-
Vibration monitoring
-
Interactive electronic projects
-
Smart home automation
-
Educational and robotics projects
The KY-031 is an excellent choice for beginners and professionals looking for a simple, low-cost solution for detecting physical impacts and vibration events in embedded systems and DIY electronics projects.
FAQ
Will this ship from Manila?
Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.
Do you ship nationwide?
Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.
Can I get this on a school PO or class order?
Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.
Is this compatible with Arduino, ESP32, or Raspberry Pi?
Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.
What's your return policy?
7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.
Do you offer technical support?
Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.
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.
Customers also bought
Build with this board
Thumb Joystick - A Beginner's Guide
Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Motor Drive (BTS7960 43A) - A Beginner's Guide
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 →Raspberry Pi Pico (RP2040) - A Beginner's Guide
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 →Notes from the bench
Ask the community
Project Showcase — show what you built
Share what you built. Photos, BOM, what worked, what didn't.
view thread →How to ask a good question (and actually get answers)
Symptom + what you tried + clear photo = answers within hours.
view thread →ESP32 brownout when wiring a sensor — fixes that worked
Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →First Arduino — sketch upload error, what to try?
Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
view thread →