{"title":"Project Under 500rs","description":"\u003ch2\u003eElectronics Projects Under ₹500 — Arduino, ESP32 \u0026amp; IoT Kits in India\u003c\/h2\u003e\u003cp\u003eWelcome to the \u003cstrong\u003eProjects Under ₹500\u003c\/strong\u003e collection at \u003cstrong\u003eXsortex HUB\u003c\/strong\u003e — your go-to destination for affordable, beginner-friendly electronics project kits and component combos, all priced under ₹500.\u003c\/p\u003e\u003cp\u003eWhether you’re a school student building your first circuit, an engineering student working on a college project, or a hobbyist exploring Arduino and ESP32 for the first time, this collection gives you everything you need to get started — without breaking the bank.\u003c\/p\u003e\u003ch3\u003eWhat You’ll Find Here\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino Project Combos\u003c\/strong\u003e — Sensor + display + microcontroller kits ready to wire up and code\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32 \u0026amp; NodeMCU Starter Sets\u003c\/strong\u003e — WiFi-enabled IoT project components at unbeatable prices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Kits\u003c\/strong\u003e — Ultrasonic, PIR, gas, and soil moisture sensor modules for data-driven projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Bundles\u003c\/strong\u003e — Resistors, LEDs, capacitors, and jumper wires for breadboard builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAll kits and combos in this collection are compatible with \u003cstrong\u003eArduino IDE\u003c\/strong\u003e, \u003cstrong\u003eMicroPython\u003c\/strong\u003e, and \u003cstrong\u003eESP-IDF\u003c\/strong\u003e. Fast delivery available across India — order today from Xsortex HUB and start building!\u003c\/p\u003e","products":[{"product_id":"arduino-nano-ultrasonic-distance-meter-project-combo-hc-sr04-16x2-lcd","title":"Arduino Nano Ultrasonic Distance Meter Project Combo | HC-SR04 + 16x2 LCD","description":"\u003ch2\u003eArduino Nano Ultrasonic Distance Meter Project Combo – HC-SR04 + 16x2 LCD\u003c\/h2\u003e\n\u003cp\u003eBuild your own \u003cstrong\u003eultrasonic distance meter\u003c\/strong\u003e with this ready-to-use project combo from \u003cstrong\u003eXsortex HUB\u003c\/strong\u003e. 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This kit combines the \u003cstrong\u003eArduino Nano\u003c\/strong\u003e with the \u003cstrong\u003eMQ-2 Gas \u0026amp; Smoke Sensor\u003c\/strong\u003e, \u003cstrong\u003eActive Buzzer\u003c\/strong\u003e, \u003cstrong\u003eRelay Module\u003c\/strong\u003e, and dual indicator LEDs — giving you a fully functional gas detection system that alerts you to dangerous LPG, methane, smoke, or hydrogen levels and can automatically cut power to an appliance via the relay.\u003c\/p\u003e\n\u003cp\u003eIdeal for students building a home safety project, makers prototyping a smart kitchen alarm, or engineers demonstrating gas sensing and automated relay control with Arduino.\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included in This Combo?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× Arduino Nano\u003c\/strong\u003e — ATmega328P, 5V, 14 digital I\/O, 8 analog inputs, Mini-USB \/ Type-C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× MQ-2 Gas \u0026amp; Smoke Sensor Module\u003c\/strong\u003e — Detects LPG, methane, smoke, hydrogen \u0026amp; propane; analog + digital output; 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 3V Active Buzzer\u003c\/strong\u003e — Loud audible alarm on gas detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 5mm Red LED\u003c\/strong\u003e — Danger indicator — lights up when gas is detected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 5mm Green LED\u003c\/strong\u003e — Safe indicator — lights up when air is clean\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 220Ω Resistors\u003c\/strong\u003e — Current-limiting resistors for Red and Green LEDs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 1-Channel Relay Module\u003c\/strong\u003e — 5V coil, 10A\/250VAC — auto-cut power to gas appliance on detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJumper Wires\u003c\/strong\u003e —  male-to-female for breadboard connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard\u003c\/strong\u003e — 400-point solderless breadboard for prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMQ-2 sensor\u003c\/strong\u003e continuously monitors the surrounding air for combustible gases and smoke. 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All components are tested for compatibility and ready to wire up on the included breadboard.\u003c\/p\u003e","brand":"Xsortex HUB","offers":[{"title":"Default Title","offer_id":52625330536580,"sku":"KIT-NANO-GAS-001","price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/6472\/4100\/files\/Gasleak.png?v=1786178425"},{"product_id":"uno-gas-smoke-warning-project-combo-arduino-uno-r3-mq-2-sensor-buzzer-led","title":"UNO Gas \u0026 Smoke Warning Project Combo | Arduino UNO R3 + MQ-2 Sensor + Buzzer + LED","description":"\u003ch2\u003eUNO Gas \u0026amp; Smoke Warning Project Combo — Arduino UNO R3 + MQ-2 + Buzzer + Red LED\u003c\/h2\u003e\n\u003cp\u003eBuild a simple yet effective \u003cstrong\u003eGas \u0026amp; Smoke Warning System\u003c\/strong\u003e with this beginner-friendly project combo from \u003cstrong\u003eXsortex HUB\u003c\/strong\u003e. 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This kit combines the powerful \u003cstrong\u003eESP32 CP2102 38-Pin Wi-Fi\/Bluetooth Board\u003c\/strong\u003e with the \u003cstrong\u003eMFRC522 RFID Reader\u003c\/strong\u003e, a \u003cstrong\u003e1-Channel Relay Module\u003c\/strong\u003e, \u003cstrong\u003eActive Buzzer\u003c\/strong\u003e, and \u003cstrong\u003eRed LED\u003c\/strong\u003e — giving you a fully connected access control system that can authenticate RFID cards, control a door lock or electric strike via relay, and log access events over Wi-Fi to a cloud dashboard or mobile app.\u003c\/p\u003e\n\u003cp\u003eUnlike basic Arduino RFID projects, this combo leverages the ESP32’s dual-core processor and built-in Wi-Fi + Bluetooth to enable \u003cstrong\u003eremote access management\u003c\/strong\u003e, \u003cstrong\u003ereal-time notifications\u003c\/strong\u003e, and \u003cstrong\u003ecloud-based access logs\u003c\/strong\u003e — making it ideal for advanced IoT projects and smart home applications.\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included in This Combo?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× ESP32 CP2102 38-Pin Wi-Fi\/Bluetooth Board\u003c\/strong\u003e — Dual-core 240MHz, 802.11 b\/g\/n WiFi, BT 4.2, 18 ADC channels, CP2102 USB-to-serial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× MFRC522 RFID Reader Module\u003c\/strong\u003e — 13.56MHz contactless, SPI interface, includes RFID card \u0026amp; key fob, 3.3V logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 1-Channel 5V Relay Module\u003c\/strong\u003e — 5V coil, 10A\/250VAC contacts — controls electric door lock, strike, or solenoid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 3V Active Buzzer\u003c\/strong\u003e — Audible feedback for access granted \/ denied events\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 5mm Red LED\u003c\/strong\u003e — Visual indicator for access denied events\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 220Ω Resistor\u003c\/strong\u003e — Current-limiting resistor for the Red LED\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMFRC522\u003c\/strong\u003e reads the UID from an RFID card or key fob via 13.56MHz SPI communication. The ESP32 compares the UID against an authorised list. On a match:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eRelay activates\u003c\/strong\u003e — unlocks the door or electric strike for a set duration\u003c\/li\u003e\n\u003cli\u003e🔔 \u003cstrong\u003eBuzzer beeps once\u003c\/strong\u003e — access granted tone\u003c\/li\u003e\n\u003cli\u003e🟢 LED stays off (or green if added)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn an unauthorised card:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e❌ \u003cstrong\u003eRelay stays off\u003c\/strong\u003e — door remains locked\u003c\/li\u003e\n\u003cli\u003e🔔 \u003cstrong\u003eBuzzer sounds a long alert\u003c\/strong\u003e — access denied tone\u003c\/li\u003e\n\u003cli\u003e🔴 \u003cstrong\u003eRed LED turns ON\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith ESP32’s Wi-Fi, extend the project to send access logs to \u003cstrong\u003eFirebase\u003c\/strong\u003e, \u003cstrong\u003eBlynk\u003c\/strong\u003e, or a custom web server — and manage authorised UIDs remotely.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller:\u003c\/strong\u003e ESP32 CP2102 38-Pin — Dual-core 240MHz, WiFi + BT 4.2, 3.3V logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRFID Module:\u003c\/strong\u003e MFRC522 — 13.56MHz, SPI, 3.3V, read range up to 5cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay:\u003c\/strong\u003e 1-Channel, 5V coil, 10A\/250VAC — controls door lock or solenoid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicators:\u003c\/strong\u003e 3V Active Buzzer + 5mm Red LED (220Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Wi-Fi 802.11 b\/g\/n + Bluetooth 4.2 (ESP32)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 5V via Micro-USB (ESP32 onboard 3.3V regulator powers MFRC522)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming:\u003c\/strong\u003e Arduino IDE with ESP32 board package + MFRC522 library\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWi-Fi connected RFID door lock and smart access system\u003c\/li\u003e\n\u003cli\u003eCloud-based employee or student attendance tracking\u003c\/li\u003e\n\u003cli\u003eRemote access management via mobile app or web dashboard\u003c\/li\u003e\n\u003cli\u003eSmart locker or cabinet with RFID authentication\u003c\/li\u003e\n\u003cli\u003eAdvanced IoT security and access control college project\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder now from Xsortex HUB\u003c\/strong\u003e and get fast delivery across India. All components are tested for compatibility and ready to prototype.\u003c\/p\u003e","brand":"Xsortex HUB","offers":[{"title":"Default Title","offer_id":52625349181572,"sku":"KIT-ESP32-RFID-001","price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/6472\/4100\/files\/ESP32Wi-FiRFIDSmartAccess.png?v=1786179594"}],"url":"https:\/\/www.xsortexhub.com\/collections\/project-under-500rs.oembed","provider":"Xsortex HUB","version":"1.0","type":"link"}