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DFRobot

· MPN: DFR1085

$48.37 |
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##Introduction The new Arduino UNO R4 comes in two versions: the UNO R4 WiFi and the UNO R4 Minima. It runs on the Renesas RA4M1 (Arm Cortex®-M4) processor, ...

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##Introduction The new Arduino UNO R4 comes in two versions: the UNO R4 WiFi and the UNO R4 Minima. It runs on the Renesas RA4M1 (Arm Cortex®-M4) processor, with a clock speed of 48MHz, which provides a 3x increase over the UNO R3. In addition to that, the SRAM has been upgraded from 2kB to 32kB and the flash memory has been increased from 32kB to 256kB to accommodate to more complex projects. Furthermore, in response to requests from the Arduino community, the USB port has been upgraded to USB-C and the maximum power supply voltage has been increased to 24V. The board provides a CAN bus, allowing users to minimize wiring and perform different tasks by connecting multiple extension boards. Finally, the new board also includes a 12-bit analog DAC.UNO R4 Minima provides a cost-effective option for those seeking the new microcontroller without additional features.Based on the success of UNO R3, the UNO R4 board is the ideal prototype and learning tool for anyone. While retaining the well-known features of the UNO series, such as standard form factor, shield compatibility, 5V voltage, and robustness, new features have been added.Thanks to its powerful design and reliable performance, the UNO R4 is a valuable addition to the Arduino ecosystem, suitable for beginners and experienced electronics enthusiasts alike to deploy their own projects.Figure: Board Overview ##Features Hardware compatibility with UNO form factorThe UNO R4 Minima maintainsthe same form factor, pinout, and 5 V operating voltage as its predecessor, the UNOR3. This ensures a seamless transition for existing shields and projects, leveragingthe extensive and unique ecosystem already established for the Arduino UNO.Expanded memory and faster clockPrepare for more precise calculations andthe ability to handle complex projects with ease. The UNO R4 Minima boastsincreased memory and a faster clock speed, empowering you to tackle demandingtasks effortlessly.Extra on-board peripheralsThe UNO R4 Minima introduces a range of on-boardperipherals, including a 12-bit DAC, CAN BUS, and OP AMP. These additionalcomponents provide you with expanded capabilities and flexibility in your designs.Extended 24 V toleranceThe UNO R4 Minima now supports a wider input voltagerange, allowing power supplies up to 24 V. This enables seamless integration withmotors, LED strips, and other actuators, simplifying your projects by utilizing a singlepower source.SWD connectorDebugging is a critical aspect of any project. Simply connect anexternal debugger to the UNO R4 Minima and effortlessly monitor the innerworkings of your system. Stay in control and gain valuable insights.HID supportThe UNO R4 Minima comes with built-in HID (Human Interface Device)support, enabling it to simulate a mouse or keyboard when connected to acomputer via a USB cable. This convenient feature makes it a breeze to sendkeystrokes and mouse movements to a computer, enhancing usability andfunctionality. ##Specification MCU: Arm cortex M4Memory: 256 KB Flash/32KB SRAMOperating voltage:5VInput voltage:6-24VClock speed:48MHzProgramming port: USB-CDigital pins:14PWM:6ADC:6DAC:1(12bit)SPI:1I2C:1CAN:1 ##Documents Arduino UNO R4 Minima Datasheet ##ShippingList Arduino UNO R4 Minima Development Board × 1

Jargon buster

Plain-language definitions for the technical terms used above.

CAN bus
CAN bus is a reliable two-wire communication network originally designed for vehicles and now common in machinery and robotics. It matters when you need multiple controllers or devices to share status and control messages in a noisy electrical environment.
DAC
A digital-to-analogue converter turns numbers from the microcontroller into a real analogue voltage. It matters if you want to generate simple waveforms, audio-style signals, or variable control voltages rather than just on/off outputs.
Flash memory
Non-volatile memory that keeps stored data even when power is removed. In this sensor, it matters because enrolled fingerprint templates can remain saved after the project is turned off.
HID
Human Interface Device is a USB device class used for keyboards, mice, gamepads and similar controls. If a board supports HID over USB, it can act like an input device to a computer without needing a custom driver.
LED
A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
microcontroller
A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
Shield
An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
SPI
A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
SRAM
Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
SWD
Serial Wire Debug is a two-wire programming and debugging interface used with many microcontrollers. It matters if you need low-level access to program, recover or debug the processor board connected to this carrier.
USB-C
A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.

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