{"product_id":"diy-auto-smoke-exhaust-fan-kit-d1-mini-mq-2-relay","title":"DIY - Auto Smoke Exhaust Fan Kit - D1 Mini, MQ-2, Relay","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis DIY project builds an automatic smoke and gas exhaust fan. A Wemos D1 Mini reads an MQ-2 gas sensor and switches a fan on through a relay when smoke is detected, while showing live readings on an OLED and a web monitor.\u003c\/p\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eThe MQ-2 sensor continuously measures smoke and gas levels in the air.\u003c\/li\u003e\n\u003cli\u003eThe D1 Mini compares the reading with a threshold and shows it on the OLED and on a live web page.\u003c\/li\u003e\n\u003cli\u003eWhen the level crosses the threshold, the D1 Mini triggers the relay, which switches the DC motor fan on until the air clears.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eComplete Parts List\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWemos D1 Mini - IOT ESP8266 Based Development Board\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.96 Inch I2C\/IIC 4pin OLED Display Module White\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5V 1 Channel Relay Module\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3–6V R140 DC Motor (High-Speed DIY \u0026amp; Toy Motor)\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Motor Plastic Fan Blade\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJumper Wire 10 Pin Male To Male 20cm\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJumper Wire 10 Pin Male To Female 20cm\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400 Points Mini Solderless Prototype PCB Breadboard High Quality\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMB102 Adjustable Breadboard Power Supply Module (3.3V \u0026amp; 5V) for Arduino \u0026amp; Raspberry Pi\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKitchen safety\u003c\/strong\u003e - automatically clears smoke and cooking fumes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkshop ventilation\u003c\/strong\u003e - keeps soldering or chemical fumes in check\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT monitoring\u003c\/strong\u003e - monitor air quality remotely over WiFi\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFull Build Guide\u003c\/h3\u003e\u003cp\u003eStep-by-step instructions and code for this exact project are on \u003ca href=\"https:\/\/www.kitkraft.in\/blogs\/project\/auto-smoke-exhaust-fan-real-time-web-monitor-d1-mini-mq-2-relay\"\u003eProject Hub\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDo I need coding experience?\u003c\/strong\u003e No prior experience is required - this kit is built around one specific project, and the full code is freely available. See the build guide above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat tools do I need beyond what's included?\u003c\/strong\u003e A computer with the free Arduino IDE (or ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse the parts afterward?\u003c\/strong\u003e Yes - every component in this kit is a standard, reusable part you can use in future projects, not a single-use kit.\u003c\/p\u003e","brand":"Kitkraft","offers":[{"title":"Default Title","offer_id":49413931270283,"sku":"KKPRJ0038","price":999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/1908\/0075\/files\/DIY_-_Auto_Smoke_Exhaust_Fan_Kit_-_D1_Mini__MQ-2__Relay_square.jpg?v=1790830714","url":"https:\/\/www.kitkraft.in\/products\/diy-auto-smoke-exhaust-fan-kit-d1-mini-mq-2-relay","provider":"Kitkraft","version":"1.0","type":"link"}