Create a fun Halloween decoration that comes to life when trick-or-treaters approach. When the PIR sensor detects motion, the ghost lights up with eerie LEDs, plays spooky sounds, and can even move using a servo motor.<\/p>\n
Difficulty:<\/strong> Beginner A PIR sensor detects motion. When triggered, the system activates LEDs (in the ghost’s eyes or body), plays a spooky sound through a speaker, and optionally moves a servo to make the ghost shake or wave. After a few seconds, it returns to standby mode.<\/p>\n VCC<\/th>\n 5V<\/th>\n GND<\/th>\n GND<\/th>\n OUT<\/th>\n Digital Pin 2<\/th>\n TX<\/th>\n Digital Pin 11<\/th>\n RX<\/th>\n Digital Pin 10 (via 1k\u03a9)<\/th>\n SPK+<\/th>\n Speaker (+)<\/th>\n SPK-<\/th>\n Speaker (-)<\/th>\n Anodes<\/th>\n Digital Pin 9 (via 220\u03a9)<\/th>\n Signal<\/th>\n Digital Pin 3<\/th>\n<\/tbody>\n \u8868<\/p>\n This motion-activated ghost is a fun and engaging Halloween decoration that delights trick-or-treaters. With simple materials and basic electronics, you can create a memorable spooky experience.<\/p>\n","protected":false},"excerpt":{"rendered":" Project Overview Create a fun Halloween decoration that comes to life when trick-or-treaters approach. When the PIR sensor detects motion, the ghost lights up with eerie LEDs, plays spooky sounds, and can even move using a servo motor. Difficulty: Beginner Estimated time: 2 hours Estimated cost: $20-30 How It Works A PIR sensor detects motion. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-4048","post","type-post","status-publish","format-standard","hentry","category-projects"],"blocksy_meta":[],"yoast_head":"\r\n
\nEstimated time:<\/strong> 2 hours
\nEstimated cost:<\/strong> $20-30<\/p>\nHow It Works<\/h2>\n
Materials Needed<\/h2>\n
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Circuit Diagram<\/h2>\n
Connection Table<\/h3>\n
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Component<\/th>\n Pin<\/th>\n Arduino Pin<\/th>\n<\/thead>\n \nPIR Sensor<\/th>\n PIR Sensor<\/th>\n PIR Sensor<\/th>\n DFPlayer Mini<\/th>\n DFPlayer Mini<\/th>\n DFPlayer Mini<\/th>\n DFPlayer Mini<\/th>\n LEDs (parallel)<\/th>\n Servo<\/th>\n Arduino Code<\/h2>\n
#include <SoftwareSerial.h>\n#include <DFRobotDFPlayerMini.h>\n#include <Servo.h>\n\nSoftwareSerial mySoftwareSerial(10, 11);\nDFRobotDFPlayerMini myDFPlayer;\nServo ghostServo;\n\nconst int pirPin = 2;\nconst int ledPin = 9;\nconst int servoPin = 3;\n\nunsigned long lastTriggerTime = 0;\nconst unsigned long effectDuration = 5000;\nbool isActive = false;\n\nconst int ghostMoan = 1;\nconst int spookyLaugh = 2;\n\nvoid setup() {\n Serial.begin(9600);\n \n pinMode(pirPin, INPUT);\n pinMode(ledPin, OUTPUT);\n digitalWrite(ledPin, LOW);\n \n ghostServo.attach(servoPin);\n ghostServo.write(90);\n \n mySoftwareSerial.begin(9600);\n if (!myDFPlayer.begin(mySoftwareSerial)) {\n while (true);\n }\n myDFPlayer.volume(25);\n \n delay(60000);\n}\n\nvoid activateGhost() {\n isActive = true;\n lastTriggerTime = millis();\n \n digitalWrite(ledPin, HIGH);\n \n int randomSound = random(1, 3);\n myDFPlayer.play(randomSound);\n \n for (int i = 0; i < 3; i++) {\n ghostServo.write(60);\n delay(150);\n ghostServo.write(120);\n delay(150);\n }\n ghostServo.write(90);\n \n for (int i = 0; i < 3; i++) {\n digitalWrite(ledPin, LOW);\n delay(100);\n digitalWrite(ledPin, HIGH);\n delay(100);\n }\n}\n\nvoid deactivateGhost() {\n isActive = false;\n digitalWrite(ledPin, LOW);\n ghostServo.write(90);\n}\n\nvoid loop() {\n bool motionDetected = digitalRead(pirPin) == HIGH;\n \n if (motionDetected && !isActive) {\n activateGhost();\n }\n \n if (isActive && (millis() - lastTriggerTime > effectDuration)) {\n deactivateGhost();\n }\n \n delay(50);\n}\n<\/code><\/pre>\nGhost Construction<\/h2>\n
Frame<\/h3>\n
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Costume<\/h3>\n
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Installation Steps<\/h2>\n
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Project Extensions<\/h2>\n
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Conclusion<\/h2>\n