Arduino UNO Ek एक R4 WiFi - Made in India

 

The Arduino UNO Ek R4 WiFi is a powerful upgrade to the classic UNO board, featuring a RA4M1 Arm® Cortex®-M4 microprocessor for faster processing and a ESP32-S3 WiFi Module from Espressif. It maintains compatibility with existing shields and offers built-in features like a HID, DAC and RTC, making it ideal for both beginners and experienced makers.

Features

• Renesas RA4M1 Arm® Cortex®-M4 microprocessor @ 48MHz with a floating point unit (FPU) @ 5V operating voltage
• 2.4 GHz WiFi and Bluetooth 5.0
• Real-time Clock (RTC)
• Memory Protection Unit (MPU)
• Digital Analog Converter (DAC)
• HID support, built-in HID (Human Interface Device) support
• 256 KB Flash, 32 KB SRAM
• 14-bit ADC
• 12-bit DAC

• Overview

  The Arduino UNO Ek R4 WiFi is a latest new upgrade to the popular Arduino UNO R3 board. UNO Ek R4 has the same form factor as the UNO R3 measuring 68.58 x 53.34 mm in dimensions. UNO Ek R4 WiFi comes with a Renesas RA4M1 (Arm® Cortex®-M4) a 32-bit microprocessor clocked at 48 MHz, expanded menory with 32kB of SRAM and 256kB of flash memory and supports 5V operating voltage and also hosts a ESP32-S3 module from Espressif which adds the functionality of wireless connectivity (WiFi and Bluetooth 5.0).

  Apart from the improved performance and expanded memory, it has an onboard RTC (Real Time Clock), DAC (Digital to Analog Converter), 14-bit ADC (Analog to Digital Converter), OPAMP (Operational Amplifier) and a MPU (Memory Protection Unit). All these features eliminate the need for additional components in projects, simplifying the design process.

  Also turn your UNO into a keyboard or mouse! The UNO R4 WiFi built-in HID support lets you control your computer directly with keystrokes and mouse movements when connected through USB. This opens up new possibilities for interactive projects and simplifies user input.

  The UNO R4 WiFi user-friendly design makes it easy to learn for beginners, while its powerful features provide ample room for experienced users to explore more complex projects. Whether you're building a sophisticated robot with advanced motor control or developing a data logger that captures and analyzes intricate sensor readings, the UNO R4 has the power and memory to handle your project's needs.

  Features

  Microprocessor

  • Renesas RA4M1 Arm® Cortex®-M4 microprocessor @ 48MHz with a floating point unit (FPU) @ 5V operating voltage
  • Real-time Clock (RTC)
  • Memory Protection Unit (MPU)
  • Digital Analog Converter (DAC)

  Memory

  • 256 KB Flash
  • 32 KB SRAM
  • 8 KB EEPROM

  Pins

  • 14x Digital Pins (GPIO), D0 - D13
  • 6x Analog Input Pins (ADC), A0 - A5
  • 6x PWM Pins D3, D5, D6, D9, D10, D11

  Peripherals

  • Capacitive Touch Sensing Unit
  • USB 2.0 Full Speed Module
  • 14-bit ADC
  • 12-bit DAC
  • Operational Amplifier (OPAMP)

  Power

  • 6 to 24V Recommended Voltage
  • 5V Operating Voltage
  • Power via USB-C @ 5V
  • Overvoltage and Reverse Polarity Portection with Schottky Diodes

  WiFi

  • Wi-Fi® support with 802.11 b/g/n standard (Wi-Fi® 4)
  • Bit rate at up to 150 Mbps
  • 2.4 GHz band

  Bluetooth

  • Bluetooth® 5

  Specification

  Technical details for Arduino UNO Ek R4 Wifi

  Microcontroller	Renesas RA4M1 (Arm® Cortex®-M4)
  USB	USB-C®
  Pins	14x Digital I/O Pins 6x Analog Input Pins 1x DAC 6x PWM Pins
  Communication	1x USB (Programming Port) 1x UART 1x I2C 1x SPI 1x CAN Bus
  Input Voltage	6 to 24V
  Operating Voltage	5V ESP32-S3 is 3.3 V
  Current per I/O Pin	8mA
  Clock Speed	48 MHz ESP32-S3 up to 240 MHz
  Memory	RA4M1 256 KB Flash 32 KB SRAM 8 KB EEPROM ESP32-S3 384 kB ROM 512 kB SRAM
  Dimensions	68.58 x 53.34 mm

  Board Layout

  UNO Ek R4 mechanical drawing and board layout.

  

  Part	Description
  U1	R7FA4M1AB3CFM#AA0 Microcontroller IC
  U2	NLASB3157DFT2G Multiplexer
  U3	ISL854102FRZ-T Buck Converter
  U4	TXB0108DQSR Logic Level Shifter
  U5	SGM2205-3.3XKC3G Linear Regulator
  U6	NLASB3157DFT2G Multiplexer
  M1	ESP32-S3-MINI-1-N8
  PB1	RESET Button
  JANALOG	Analog IO Headers
  JDIGITAL	Digital IO Headers
  JOFF	OFF, VRTC Header
  J1	CX90B-16P USB-C® connector
  J2	SM04B-SRSS-TB(LF)(SN) I2C connector
  J3	ICSP Header (SPI)
  J5	DC Jack
  J6	ESP Header
  DL1	LED TX
  DL2	LED RX
  DL3	LED Power
  DL4	LED SCK

  Pinout

  Pinout for Arduino UNO Ek R4 WiFi

  

  Power

  Pin	Function		Description
  Analog Side
  4	+3V3		+3V3 Output Power Rail
  5	+5V		+5V Output Power Rail
  6	GND		Ground
  7	GND		Ground
  8	VIN		Voltage Input
  Digital Side
  4	GND		Ground

  ---

  Analog

  Pin	Function		Description
  9	A0		Analog Input 0 / DAC
  10	A1		Analog Input 1 / OPAMP+
  11	A2		Analog Input 2 / OPAMP-
  12	A3		Analog Input 3 / OPAMP Out
  13	A4 / D18		Analog Input 4 / SDA
  14	A5 / D19		Analog Input 5 / SCL

  ---

  Digital

  Pin	Function		Description
  1	SCL / D19		I2C Serial Clock
  2	SDA / D18		I2C Serial Data
  3	AREF		Analog Reference Voltage
  5	D13 / SCK		GPIO13 / SPI Clock
  6	D12 / CIPO		GPIO12 / SPI Controller In Peripheral Out
  7	D11 / COPI		GPIO11 / SPI Controller Out Peripheral In
  8	D10 / CS		GPIO 10 / SPI Chip Select
  9	D9		GPIO 9 (PWM ~)
  10	D8		GPIO 8
  11	D7		GPIO 7
  12	D6		GPIO 6 (PWM ~)
  13	D5 / CANRX0		GPIO 5 (PWM ~) / CAN Transmitter (TX)
  14	D4 / CANTX0		GPIO 4 / CAN Receiver (RX)
  15	D3		GPIO 3 (PWM ~) / Interrupt Pin
  16	D2		GPIO 2 / Interrupt Pin
  17	D1 / TX0		GPIO 1 / Serial 0 Transmitter (TX)
  18	D0 / RX0		GPIO 0 / Serial 0 Receiver (RX)

  ---

  ICSP (SPI) Header

  Pinout and pin position for ICSP Header

  RESET	SCK	CIPO
  GND	COPI	+5V

  ---

  OFF, VRTC Header

  OFF	For controlling power supply
  GND	Ground
  VRTC	Battery connection to power RTC only

  Arduino UNO R4 vs UNO R4 WiFi vs UNO R4

  Let's compare the all new UNO R4, UNO R4 WiFi and the world famous UNO R3.

  	UNO R4 Wifi  New!	UNO R4 Minima  New!	UNO R3
  Microcontroller	Renesas RA4M1 (Arm® Cortex®-M4)	Renesas RA4M1 (Arm® Cortex®-M4)	ATmega328P (8-bit AVR® RISC-based microcontroller)
  USB	USB-C®	USB-C®	USB B Connector
  Pins	14x Digital I/O Pins 6x Analog Input Pins 1x DAC 6x PWM Pins	14x Digital I/O Pins 6x Analog Input Pins 1x DAC 6x PWM Pins	14x Digital I/O Pins 6x Analog Input Pins 6x PWM Pins
  Communication	1x USB (Programming Port) 1x UART 1x I2C 1x SPI 1x CAN Bus	1x USB (Programming Port) 1x UART 1x I2C 1x SPI 1x CAN Bus	1x USB (Programming Port) 1x UART 1x I2C 1x SPI
  Input Voltage	6 to 24V	6 to 24V	7 to 12V (Recommended) 6 to 20V (limit)
  Operating Voltage	5V	5V	5V
  Current per I/O Pin	8mA	8mA	20mA
  Clock Speed	48 MHz ESP32-S3 up to 240 MHz	48 MHz	16 MHz
  Memory	RA4M1 256 KB Flash 32 KB SRAM 8 KB EEPROM ESP32-S3 384 kB ROM 512 kB SRAM	256 KB Flash 32 KB SRAM 8 KB EEPROM	32 KB Flash 2 KB SRAM 1 KB EEPROM
  Dimensions	68.58 x 53.34 mm	68.58 x 53.34 mm	68.58 x 53.34 mm