This project creates a touchless automatic trash can lid that opens when you wave your hand or approach with trash. A PIR sensor detects motion, and a servo motor lifts the lid. After a few seconds, the lid closes automatically.<\/p>\n
Difficulty:<\/strong> Beginner A PIR sensor mounted on the trash can lid or front detects motion. When motion is detected, a servo motor rotates to lift the lid. After a set delay, the servo returns to its closed position. An optional button can be added for manual control.<\/p>\n VCC<\/th>\n 5V<\/th>\n GND<\/th>\n GND<\/th>\n OUT<\/th>\n Digital Pin 2<\/th>\n Red (VCC)<\/th>\n 5V<\/th>\n Brown (GND)<\/th>\n GND<\/th>\n Orange (Signal)<\/th>\n Digital Pin 9<\/th>\n One side<\/th>\n Digital Pin 3<\/th>\n Other side<\/th>\n GND<\/th>\n<\/tbody>\n \u8868<\/p>\n This automatic trash can lid opener makes kitchen cleanup more hygienic and convenient. With simple materials and basic coding, you can upgrade any standard trash can to a touchless model.<\/p>\n","protected":false},"excerpt":{"rendered":" Project Overview This project creates a touchless automatic trash can lid that opens when you wave your hand or approach with trash. A PIR sensor detects motion, and a servo motor lifts the lid. After a few seconds, the lid closes automatically. Difficulty: Beginner Estimated time: 2-3 hours Estimated cost: $20-30 How It Works A […]<\/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-4129","post","type-post","status-publish","format-standard","hentry","category-projects"],"blocksy_meta":[],"yoast_head":"\r\n
\nEstimated time:<\/strong> 2-3 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 Servo Motor<\/th>\n Servo Motor<\/th>\n Servo Motor<\/th>\n Push Button<\/th>\n Push Button<\/th>\n Arduino Code<\/h2>\n
\/\/ Automatic Trash Can Lid Opener\n#include <Servo.h>\n\nServo lidServo;\n\nconst int pirPin = 2;\nconst int servoPin = 9;\nconst int buttonPin = 3;\nconst int ledPin = 13;\n\nconst int closedPos = 0;\nconst int openPos = 90;\n\nunsigned long lastTriggerTime = 0;\nconst unsigned long openDuration = 3000;\n\nbool lidOpen = false;\nbool motionDetected = false;\nbool buttonHeld = false;\n\nvoid setup() {\n Serial.begin(9600);\n \n pinMode(pirPin, INPUT);\n pinMode(buttonPin, INPUT_PULLUP);\n pinMode(ledPin, OUTPUT);\n \n lidServo.attach(servoPin);\n lidServo.write(closedPos);\n digitalWrite(ledPin, LOW);\n \n delay(60000);\n}\n\nvoid openLid() {\n lidServo.write(openPos);\n lidOpen = true;\n lastTriggerTime = millis();\n digitalWrite(ledPin, HIGH);\n}\n\nvoid closeLid() {\n lidServo.write(closedPos);\n lidOpen = false;\n digitalWrite(ledPin, LOW);\n}\n\nvoid loop() {\n bool motion = digitalRead(pirPin) == HIGH;\n bool button = digitalRead(buttonPin) == LOW;\n \n if (button && !buttonHeld) {\n buttonHeld = true;\n if (lidOpen) closeLid();\n else openLid();\n }\n if (!button) buttonHeld = false;\n \n if (motion && !motionDetected && !lidOpen) {\n motionDetected = true;\n openLid();\n }\n \n if (!motion && motionDetected) motionDetected = false;\n \n if (lidOpen && !buttonHeld && (millis() - lastTriggerTime > openDuration)) {\n closeLid();\n }\n \n delay(100);\n}\n<\/code><\/pre>\nInstallation Steps<\/h2>\n
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Project Extensions<\/h2>\n
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Conclusion<\/h2>\n