{"product_id":"arduino-uno-r4-minima-renesas-ra4m1-256kb-flash-made-in-india","title":"Arduino UNO R4 Minima – Renesas RA4M1, 256KB Flash, Made in India","description":"\u003ch1\u003eOfficial Arduino UNO R4 Minima – Renesas RA4M1, 48 MHz\u003c\/h1\u003e\n\u003cp\u003eThe Arduino UNO R4 Minima is the latest entry‑level board in the iconic UNO family, now powered by a 32‑bit Renesas RA4M1 Arm Cortex‑M4 processor running at 48 MHz. It retains the familiar form factor and 5 V operating voltage of the UNO R3, making it a drop‑in upgrade for most existing projects. With 256 KB of Flash memory, 32 KB of SRAM, and a USB‑C port, it offers significantly more performance and modern connectivity while maintaining full compatibility with the vast Arduino ecosystem.\u003c\/p\u003e\n\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\u003eRenesas RA4M1 (32‑bit Arm Cortex‑M4)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eClock Speed\u003c\/td\u003e\n\u003ctd\u003e48 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e256 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSRAM\u003c\/td\u003e\n\u003ctd\u003e32 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDigital I\/O Pins\u003c\/td\u003e\n\u003ctd\u003e14 (all support interrupts, 5 provide PWM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAnalog Input Pins\u003c\/td\u003e\n\u003ctd\u003e6 (12‑bit ADC)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-bluetooth-home-automation-kit-with-arduino-nano-plus-flex-sensors\"\u003eHome automation hub with Wi‑Fi\/Bluetooth shield for remote appliance control\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp8266-d1-mini-data-logging-project-kit\"\u003eEnvironmental monitoring station logging temperature, humidity, and CO₂ data\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-line-following-robot\"\u003eLine‑following robot with PID motor control and sensor fusion\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eEducational coding platform for learning embedded C\/C++ and electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe UNO R4 Minima uses the same pinout and 5 V logic levels as the classic UNO R3, so it works with most Arduino shields and accessories. It is fully supported in the Arduino IDE 2.x and can be programmed via USB‑C. Common pairings include sensor modules (DHT22, HC‑SR04), motor drivers (L298N), and communication modules (ESP8266, HC‑05).\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003ePower the board via the USB‑C port (5 V) or the barrel jack (7–12 V); the onboard regulator supplies 5 V and 3.3 V to the pin headers. Digital pins 0 and 1 are shared with the serial interface—avoid using them for other purposes when uploading sketches. Always place a 10 µF capacitor across the motor driver power supply if you experience resets when driving heavy loads.\u003c\/p\u003e\n\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\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino UNO R3 shields?\u003c\/summary\u003e\u003cp\u003eYes, the UNO R4 Minima keeps the exact same pin layout and 5 V I\/O voltage, so virtually all R3 shields work without modification.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it have built‑in Wi‑Fi or Bluetooth?\u003c\/summary\u003e\u003cp\u003eNo, the Minima variant focuses on raw I\/O and compute; for wireless connectivity, consider the UNO R4 WiFi board or add an ESP8266 shield.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a genuine Arduino board made in India?\u003c\/summary\u003e\u003cp\u003eYes, this is an official Arduino product manufactured under license in India, carrying the same quality assurance as boards produced elsewhere.\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":53444962156909,"sku":"CDN-0429","price":1000.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_bd4efe0e-fa61-4b4b-8159-11ecf0646e92.jpg?v=1781512563","url":"https:\/\/compoden.com\/products\/arduino-uno-r4-minima-renesas-ra4m1-256kb-flash-made-in-india","provider":"Compoden","version":"1.0","type":"link"}