{"product_id":"official-arduino-uno-ek-r4-minima-made-in-india","title":"Arduino UNO EK R4 Minima","description":"\u003ch2 style=\"font-size:1.4em;font-weight:700;margin:0 0 12px;line-height:1.4;\"\u003eArduino UNO EK (एक) R4 Minima — 48 MHz Arm Cortex-M4 — 256 KB Flash — Made in India\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 20px;line-height:1.7;color:#e0e0e0;\"\u003eIndia's first official Arduino board, the \u003cstrong\u003eUNO EK R4 Minima\u003c\/strong\u003e is powered by the Renesas RA4M1 32-bit microcontroller — delivering a massive performance upgrade over the classic UNO R3 while retaining full 5V shield compatibility. With a built-in \u003cstrong\u003e12-bit DAC, CAN bus, integrated OP AMP\u003c\/strong\u003e, and USB Type-C, it brings professional-grade peripherals to the familiar UNO form factor.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.15em;font-weight:700;margin:24px 0 10px;color:#e0e0e0;\"\u003eKey Highlights\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:22px;line-height:1.6;list-style-position:outside;color:#e0e0e0;\"\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003e48 MHz Arm Cortex-M4 Processing\u003c\/strong\u003e — A leap beyond the classic 16 MHz AVR, the RA4M1 handles floating-point arithmetic, complex control loops, and data-intensive algorithms without breaking a sweat.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eFull UNO Shield Compatibility\u003c\/strong\u003e — The same R3-footprint pin layout and 5V logic level ensure every existing shield, hat, and accessory in your collection works without modification or level-shifting.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eUSB Type-C Connectivity\u003c\/strong\u003e — The modern reversible connector replaces the dated Type-B port, supporting programming, power delivery, and HID device emulation from a single cable.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003e12-Bit DAC on A0\u003c\/strong\u003e — Generate smooth analog waveforms, audio tones, and precise reference voltages directly from the microcontroller — no external DAC chip required.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eBuilt-In CAN Bus Peripheral\u003c\/strong\u003e — Talk to automotive modules, industrial sensors, and multi-node embedded networks using the on-chip CAN controller; simply add an inexpensive external transceiver (e.g., SN65HVD230).\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eIntegrated Operational Amplifier\u003c\/strong\u003e — One OP AMP from the RA4M1's internal array is exposed for user applications, enabling analog signal conditioning, filtering, and closed-loop control without external components.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eWide 6–24V Input Range\u003c\/strong\u003e — Power the board and high-voltage peripherals (motors, solenoids, LED strips) from a single source — the on-board regulator handles the rest.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eReal-Time Clock (RTC)\u003c\/strong\u003e — Keep accurate timestamps for data logging, scheduled tasks, and time-aware applications without an external RTC module.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eHardware SWD Debug Port\u003c\/strong\u003e — The dedicated Serial Wire Debug connector lets you attach a J-Link or CMSIS-DAP probe for true single-step debugging, dramatically cutting troubleshooting time on complex firmware.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eHID Keyboard \u0026amp; Mouse Emulation\u003c\/strong\u003e — Native USB HID support means the board can act as a keyboard or mouse out-of-the-box — perfect for automation tools, accessibility devices, and USB gadget projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"font-size:1.15em;font-weight:700;margin:24px 0 10px;color:#e0e0e0;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"width:100%;overflow-x:auto;margin:0 0 24px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;min-width:460px;border:0;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:2px solid #3a3a3a;font-weight:700;color:#BAFF02;\"\u003eSpecification\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:2px solid #3a3a3a;font-weight:700;color:#BAFF02;\"\u003eDetails\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eMicrocontroller\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eRenesas R7FA4M1AB3CFM (RA4M1)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eProcessor Core\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e48 MHz Arm® Cortex®-M4 with FPU\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eFlash Memory\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e256 KB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eSRAM\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e32 KB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eEEPROM\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e8 KB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eDigital I\/O Pins\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e14 (6 PWM-capable)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eAnalog Input Pins\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e6 (up to 14-bit resolution)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eDAC\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e12-bit (on A0)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eOperating Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e5V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eInput Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e6–24V (barrel jack)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eUSB Connector\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eUSB Type-C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eConnectivity\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eUART, SPI, I2C, CAN\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eDebug Interface\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eSWD (Serial Wire Debug)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eRTC\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eBuilt-in\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eHID Support\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eKeyboard \u0026amp; Mouse emulation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eForm Factor\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border-bottom:1px solid #3a3a3a;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eArduino UNO R3 compatible\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px 12px;border:0;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003eGTIN\u003c\/td\u003e\n      \u003ctd style=\"padding:10px 12px;border:0;font-weight:600;word-wrap:break-word;color:#e0e0e0;\"\u003e7630049205246\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:1.15em;font-weight:700;margin:24px 0 10px;color:#e0e0e0;\"\u003eCommon Applications \u0026amp; Use Cases\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 20px;padding-left:22px;line-height:1.6;list-style-position:outside;color:#e0e0e0;\"\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eIoT Edge Devices\u003c\/strong\u003e — The RA4M1's processing headroom handles MQTT parsing, JSON serialization, and sensor fusion simultaneously, making it a capable edge node without needing a companion processor.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eMotor \u0026amp; Actuator Control\u003c\/strong\u003e — The wide 6–24V input and 6 PWM outputs drive multiple servo or DC motor drivers from the same supply rail, eliminating the need for separate voltage regulators.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eIndustrial CAN Bus Networks\u003c\/strong\u003e — Use the on-chip CAN controller with an SN65HVD230 transceiver to connect to PLCs, VFDs, automotive ECUs, and other CAN-enabled devices at up to 1 Mbps.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eAnalog Signal Generation \u0026amp; Audio\u003c\/strong\u003e — The 12-bit DAC on A0 generates clean sine waves, DTMF tones, and audio outputs for electronic musical instruments, function generators, and signal-processing experiments.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eHome Automation Controllers\u003c\/strong\u003e — Manage lighting scenes, HVAC relays, and sensor arrays while the built-in RTC keeps schedules without an internet connection or external time module.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eData Logging Systems\u003c\/strong\u003e — Pair the onboard RTC with an SD card shield to create timestamped sensor logs for environmental monitoring, energy metering, or predictive maintenance applications.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eRobotics \u0026amp; Mechatronics\u003c\/strong\u003e — Control multiple servo channels, read encoder feedback via UART or SPI, and run PID loops at 48 MHz — all on a single, shield-compatible platform.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eUSB HID Gadgets\u003c\/strong\u003e — Emulate keyboards, mice, or game controllers natively over USB Type-C — ideal for macro pads, accessibility aids, test automation jigs, and custom input devices.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eAnalog Signal Conditioning\u003c\/strong\u003e — Route sensor outputs through the built-in OP AMP for amplification or filtering before sampling with the 14-bit ADC, removing the need for external op-amp breakout boards.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:14px;padding-left:0;line-height:1.6;\"\u003e\n\u003cstrong\u003eSTEM Education \u0026amp; Prototyping\u003c\/strong\u003e — A direct drop-in upgrade for classroom kits and maker projects already built around the UNO R3 — same pinout, same IDE, significantly more capability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"font-size:1.15em;font-weight:700;margin:24px 0 10px;color:#e0e0e0;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:22px;line-height:1.8;color:#e0e0e0;\"\u003e\n  \u003cli\u003e1 x Official Arduino UNO EK (एक) R4 Minima — Made in India\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size:13px;margin:0 0 20px;line-height:1.6;color:#a0a0a0;\"\u003e\u003cem\u003eNote: accessories such as power supplies, cables, cases, and SD cards are sold separately and not included unless stated above.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.15em;font-weight:700;margin:24px 0 16px;color:#e0e0e0;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eIs the UNO EK R4 Minima compatible with existing Arduino UNO R3 shields?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eYes — the UNO EK R4 Minima uses the identical \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eUNO R3 form factor\u003c\/span\u003e with the same pin positions, headers, and \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e5V operating voltage\u003c\/span\u003e. Virtually every shield, module, and accessory designed for the UNO R3 will fit and function without modification. There is no need for any level-shifting or pin re-mapping when migrating an existing project from the R3 to this board.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eWhat power supply does the UNO EK R4 Minima require?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe board accepts \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e6–24V DC\u003c\/span\u003e through the barrel jack or can be powered directly via the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eUSB Type-C\u003c\/span\u003e connector at 5V. The wide input range makes it particularly useful in robotics and industrial settings where 12V or 24V rails are common. Each GPIO pin is rated at a maximum of \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e8 mA\u003c\/span\u003e, so ensure your load calculations stay within that limit to avoid damaging the microcontroller.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eWhich software and operating systems are supported for programming?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe UNO EK R4 Minima is fully supported by the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eArduino IDE 2.x\u003c\/span\u003e on Windows, macOS, and Linux — simply install the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eRenesas UNO R4 board package\u003c\/span\u003e from the Boards Manager. It is also compatible with PlatformIO for users who prefer a more advanced IDE workflow. The board uses standard USB drivers, so no additional driver installation is needed on most modern operating systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eHow much memory does the board have, and can it be expanded?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe RA4M1 provides \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e256 KB of Flash\u003c\/span\u003e for program storage, \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e32 KB of SRAM\u003c\/span\u003e for runtime data, and \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e8 KB of EEPROM\u003c\/span\u003e for persistent non-volatile storage. There is no built-in SD card slot, but any standard SPI-based SD card shield can be added to expand storage significantly. The EEPROM can be written using the standard Arduino EEPROM library, making it easy to store configuration values and calibration data.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eWhat accessories do I need to get started?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eTo begin programming the board, all you need is a \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eUSB Type-C cable\u003c\/span\u003e and a computer running the Arduino IDE — the USB connection handles both power and programming simultaneously. For projects using the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eCAN bus\u003c\/span\u003e feature, an external transceiver module such as the SN65HVD230 is required, as the CAN controller is on-chip but the physical layer transceiver is not. For SWD debugging, you will need a compatible probe like a J-Link EDU or a CMSIS-DAP debugger.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eHow does the UNO EK R4 Minima compare to the classic Arduino UNO R3?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe R4 Minima is a substantial upgrade: it replaces the 8-bit ATmega328P running at \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e16 MHz\u003c\/span\u003e with a 32-bit \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eArm Cortex-M4 at 48 MHz\u003c\/span\u003e, triples the Flash to 256 KB, doubles the SRAM to 32 KB, and adds peripherals the R3 never had — a 12-bit DAC, CAN bus, OP AMP, RTC, HID support, and USB Type-C. The physical footprint and 5V logic remain identical, so migration is as simple as swapping boards and recompiling.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eHow many GPIO and communication pins does the board expose?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe UNO EK R4 Minima provides \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e14 digital I\/O pins\u003c\/span\u003e (6 of which support PWM output), \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e6 analog input pins\u003c\/span\u003e with up to 14-bit resolution, plus dedicated headers for \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eUART, SPI, I2C, and CAN\u003c\/span\u003e. The SDA\/SCL pins are broken out on a separate I2C header in addition to their shared positions on A4\/A5, matching the UNO R3 layout. Maximum current per GPIO pin is 8 mA.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eIs this board suitable for beginners or only advanced users?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe UNO EK R4 Minima is genuinely approachable for beginners — it programs exactly like any other Arduino board using the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eArduino IDE\u003c\/span\u003e and the same familiar sketch structure, and the identical UNO form factor means all beginner starter-kit tutorials apply directly. Advanced users benefit from the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eCortex-M4 performance\u003c\/span\u003e, hardware CAN bus, DAC, OP AMP, SWD debugging, and PlatformIO support to build production-grade embedded systems. The board grows with you rather than becoming a bottleneck.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 12px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eWhat is the most common mistake users make when setting up this board?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe most frequent gotcha is attempting to use the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eCAN bus\u003c\/span\u003e without adding an external transceiver — the RA4M1 contains a CAN controller but not the physical layer driver chip, so you must connect an SN65HVD230 or similar module to the CAN TX\/RX pins (D4 and D5) before any CAN communication will work. A second common error is using 3.3V-logic shields with the assumption that the R4 Minima is also 3.3V — it is a \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003e5V board\u003c\/span\u003e, so 3.3V-only modules require level-shifting protection to avoid damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:3px solid #BAFF02;border-radius:4px;padding:18px 20px;margin:0 0 4px;\"\u003e\n  \u003cp style=\"font-weight:700;color:#BAFF02;margin:0 0 10px;line-height:1.5;font-size:0.97em;\"\u003eWhere can I find official documentation, firmware updates, and community support?\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.75;font-size:0.94em;color:#e0e0e0;\"\u003eThe official \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eArduino documentation portal\u003c\/span\u003e at docs.arduino.cc hosts the full hardware reference, pinout diagram, cheat sheet, and peripheral tutorials (DAC, OP AMP, CAN, RTC) specific to the UNO R4 Minima. Firmware and board package updates are delivered automatically through the \u003cspan style=\"color:#BAFF02;font-weight:600;\"\u003eArduino IDE Boards Manager\u003c\/span\u003e. Community support is active on the Arduino Forum (forum.arduino.cc) under the UNO R4 subforum, where you will find troubleshooting guides and project examples from the global maker community.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Arduino","offers":[{"title":"With","offer_id":43062158557289,"sku":"ARD-009","price":990.6,"currency_code":"INR","in_stock":true},{"title":"Without","offer_id":43062158590057,"sku":"ARD-010","price":942.22,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/4229\/5401\/files\/New_Project_88_0ae76795-7a12-4e53-9201-0197da745092.webp?v=1774518185","url":"https:\/\/edgetechrobotics.com\/products\/official-arduino-uno-ek-r4-minima-made-in-india","provider":"EdgeTech Robotics","version":"1.0","type":"link"}