This fundamental security project explores the detection of heat signatures from moving objects.
Fresnel Lens Capture: The HC-SR501 PIR sensor uses a specialized lens to focus infrared radiation onto a pyroelectric chip. The Arduino monitors the sensor's digital output pin, which remains HIGH for a set "Hold Time" after motion is detected.
Dual Adjustments: Explains the manual adjustment of the "Sensitivity" (distance) and "Time Delay" potentiometers on the back of the sensor module.
Implementation Logic
Alarm State Machine: Includes a software "Cool-down" period to prevent a single motion event from triggering multiple overlapping alarms. Ideal for home lighting automation or simple intruder alert systems.
ข้อมูล Frontmatter ดั้งเดิม
title: "Arduino With Motion Sensor"
description: "Arduino With Motion Sensor - PIR Sensor passive infrared sensor (PIR sensor)"
author: "jehankandt"
category: ""
tags:
- "kids"
- "communication"
views: 3791
likes: 0
price: 450
difficulty: "Intermediate"
components:
- "1x LED (generic)"
- "1x Jumper wires (generic)"
- "1x Breadboard (generic)"
- "1x PIR Motion Sensor (generic)"
- "1x Resistor 220 ohm"
- "1x Arduino UNO"
tools: []
apps:
- "1x Arduino Web Editor"
- "1x Arduino IDE"
downloadableFiles:
- "https://projects.arduinocontent.cc/09fa650c-2b4d-48d6-82b4-24160e04c697.ino"
documentationLinks: []
passwordHash: "6177a2be7c976e858d4a2931948e9d8cda843506c79919d1117be27acf1daf7f"
encryptedPayload: "U2FsdGVkX18173Uy1NcslxdWyYszSKLgertnAa/T0x27qUIyxT1QF4FNSjfit9Mi87oJwJ6YYUOTfFVzdNFpD2EzNPO0tv2coC5Kz3VwoBJfS2/4e/yyMrL3B8JYxkeY"
seoDescription: "Learn how to interface Arduino with a Motion Sensor and PIR Sensor for motion detection in your DIY electronics projects."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/arduino-with-motion-sensor-b59f87_cover.jpg"
lang: "en"