This project connects a PIR sensor to IFTTT (If This Then That), allowing you to trigger thousands of smart home actions. When motion is detected, you can turn on lights, send notifications, log data to spreadsheets, control smart plugs, or even trigger security cameras.<\/p>\n
Difficulty:<\/strong> Intermediate An ESP32 detects motion from a PIR sensor and sends an HTTP request to IFTTT’s Webhooks service. IFTTT then triggers any action you’ve configured. Since the ESP32 uses Wi-Fi, it needs to be within range of your network, but the IFTTT integration works from anywhere.<\/p>\n \u8868<\/p>\n Send additional data like time and sensor ID:<\/p>\n For battery operation, add deep sleep:<\/p>\n Create a Google Sheets log of all motion events:<\/p>\n This IFTTT integration opens up countless possibilities for your PIR sensor. With minimal coding, you can connect your sensor to virtually any smart home device or online service.<\/p>\n","protected":false},"excerpt":{"rendered":" Project Overview This project connects a PIR sensor to IFTTT (If This Then That), allowing you to trigger thousands of smart home actions. When motion is detected, you can turn on lights, send notifications, log data to spreadsheets, control smart plugs, or even trigger security cameras. Difficulty: Intermediate Estimated time: 1-2 hours Estimated cost: $15-25 […]<\/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-3925","post","type-post","status-publish","format-standard","hentry","category-projects"],"blocksy_meta":[],"yoast_head":"\r\n
\nEstimated time:<\/strong> 1-2 hours
\nEstimated cost:<\/strong> $15-25<\/p>\nHow It Works<\/h2>\n
Materials Needed<\/h2>\n
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IFTTT Setup<\/h2>\n
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Circuit Diagram<\/h2>\n
Connection Table<\/h3>\n
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Component<\/th>\n Pin<\/th>\n ESP32 Pin<\/th>\n<\/thead>\n \nPIR Sensor<\/th>\n VCC<\/th>\n 3.3V<\/th>\n PIR Sensor<\/th>\n GND<\/th>\n GND<\/th>\n PIR Sensor<\/th>\n OUT<\/th>\n GPIO 4<\/th>\n<\/tbody>\n Arduino Code<\/h2>\n
\/\/ PIR Sensor with IFTTT Integration\n#include <WiFi.h>\n#include <HTTPClient.h>\n\n\/\/ Wi-Fi credentials\nconst char* ssid = \"YourWiFiSSID\";\nconst char* password = \"YourWiFiPassword\";\n\n\/\/ IFTTT configuration\nconst char* iftttKey = \"YourIFTTTKey\";\nconst char* eventName = \"motion_detected\";\n\nconst int pirPin = 4;\n\nunsigned long lastTriggerTime = 0;\nconst unsigned long minInterval = 10000; \/\/ 10 seconds between triggers\n\nvoid setup() {\n Serial.begin(115200);\n pinMode(pirPin, INPUT);\n \n WiFi.begin(ssid, password);\n while (WiFi.status() != WL_CONNECTED) {\n delay(500);\n Serial.print(\".\");\n }\n Serial.println(\"WiFi connected\");\n \n Serial.println(\"IFTTT Motion Sensor Ready\");\n delay(60000); \/\/ PIR warm-up\n}\n\nvoid triggerIFTTT() {\n if (WiFi.status() == WL_CONNECTED) {\n HTTPClient http;\n String url = \"http:\/\/maker.ifttt.com\/trigger\/\" + String(eventName) + \"\/with\/key\/\" + String(iftttKey);\n http.begin(url);\n int httpCode = http.GET();\n \n if (httpCode > 0) {\n Serial.printf(\"IFTTT trigger sent, response: %d\\n\", httpCode);\n } else {\n Serial.printf(\"IFTTT trigger failed: %s\\n\", http.errorToString(httpCode).c_str());\n }\n http.end();\n }\n}\n\nvoid loop() {\n bool motion = digitalRead(pirPin) == HIGH;\n \n if (motion && (millis() - lastTriggerTime > minInterval)) {\n lastTriggerTime = millis();\n Serial.println(\"Motion detected - triggering IFTTT\");\n triggerIFTTT();\n }\n \n delay(100);\n}\n<\/code><\/pre>\nEnhanced Version with Multiple Actions<\/h2>\n
void triggerIFTTTWithData(int sensorId) {\n if (WiFi.status() == WL_CONNECTED) {\n HTTPClient http;\n String url = \"http:\/\/maker.ifttt.com\/trigger\/\" + String(eventName) + \"\/with\/key\/\" + String(iftttKey);\n http.begin(url);\n http.addHeader(\"Content-Type\", \"application\/json\");\n \n String payload = \"{\\\"value1\\\":\\\"\" + String(sensorId) + \"\\\",\\\"value2\\\":\\\"\" + String(millis()) + \"\\\",\\\"value3\\\":\\\"Motion\\\"}\";\n int httpCode = http.POST(payload);\n \n http.end();\n }\n}\n<\/code><\/pre>\nPopular IFTTT Actions for PIR Sensors<\/h2>\n
Notifications<\/h3>\n
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Smart Home Control<\/h3>\n
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Data Logging<\/h3>\n
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Low-Power Battery Version<\/h2>\n
#include <esp_sleep.h>\n\nvoid setup() {\n \/\/ ... existing setup ...\n esp_sleep_enable_ext0_wakeup((gpio_num_t)pirPin, 1);\n}\n\nvoid loop() {\n bool motion = digitalRead(pirPin) == HIGH;\n if (motion) {\n triggerIFTTT();\n delay(5000);\n }\n esp_deep_sleep_start();\n}\n<\/code><\/pre>\nInstallation Steps<\/h2>\n
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Project Extensions<\/h2>\n
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Troubleshooting<\/h2>\n
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minInterval<\/code> to prevent rapid fire.<\/li>\nExample: Google Sheets Logger<\/h2>\n
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Conclusion<\/h2>\n