{"product_id":"arduino-uno-r3-original-atmega328p-microcontroller-board","title":"Arduino Uno R3 Original – ATmega328P Microcontroller Board","description":"\u003ch1\u003eArduino Uno R3 – ATmega328P Microcontroller Board\u003c\/h1\u003e\n\u003cp\u003eThe Arduino Uno R3 is the most widely used microcontroller board, built around the ATmega328P. It provides 14 digital I\/O pins, 6 analog inputs, a 16 MHz quartz crystal, USB connection, and a power jack. Whether you're a beginner learning electronics or a professional prototyping a new product, the Uno R3 is the reliable, go-to board for countless projects.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicrocontroller\u003c\/td\u003e\n\u003ctd\u003eATmega328P\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDigital I\/O Pins\u003c\/td\u003e\n\u003ctd\u003e14 (6 provide PWM output)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAnalog Input Pins\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e32 KB (0.5 KB used by bootloader)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automated-plant-watering\"\u003eAutomated plant watering system using a soil moisture sensor\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eBluetooth-controlled robot with motor driver\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eIoT weather station with DHT11 and ESP8266\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eInteractive LED cube using PWM and shift registers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Arduino Uno R3 works with most Arduino shields and sensors, and is supported across Windows, macOS, and Linux. It operates at 5V logic levels and can be powered via USB or a 7-12V DC adapter through the barrel jack. It pairs seamlessly with common modules like LCD displays, motor drivers, and wireless transceivers.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VIN to a 7-12V DC adapter or USB for power. Use digital pins 0 and 1 for serial communication; avoid using them when uploading code. PWM outputs are on pins 3,5,6,9,10,11. For a quick test, connect an LED with a 220Ω resistor to pin 13.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino IDE?\u003c\/summary\u003e\u003cp\u003eYes, the Arduino Uno R3 is fully compatible with the Arduino IDE. Simply connect via USB and select 'Arduino Uno' from the board menu.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I power this board with a 9V battery?\u003c\/summary\u003e\u003cp\u003eYes, you can power the Uno R3 with a 9V battery connected to the barrel jack or VIN pin. The onboard voltage regulator handles 7-12V input.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this come with a USB cable?\u003c\/summary\u003e\u003cp\u003eNo, the package includes only the Arduino Uno R3 board. You can use any standard USB-A to USB-B cable, commonly used for printers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444962484589,"sku":"CDN-0449","price":1850.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_1f0e2030-d6fc-4e50-9670-4e0804e6e09a.jpg?v=1781512577","url":"https:\/\/compoden.com\/products\/arduino-uno-r3-original-atmega328p-microcontroller-board","provider":"Compoden","version":"1.0","type":"link"}