Arduino Uno R4 WiFi (Clone)

$47.95 $68.09
DescriptionThe Arduino Uno R4 is pow­ered by the Rene­sas RA4M1 32-bit ARM Cor­tex-M4 proces­sor, pro­vid­ing a sig­nif­i­cant boost in pro­cess­ing pow­er, mem­o­ry, and func­tion­al­i­ty. The WiFi ver­sion comes with an ESP32-S3 WiFi mod­ule in addi­tion to the RA4M1, expand­ing cre­ative oppor­tu­ni­ties for mak­ers and engi­neers. The Uno R4 Min­i­ma is an afford­able option for those who don’t need the addi­tion­al fea­tures.The Arduino Uno R4 runs at 48 MHz, which pro­vides a 3x increase over the pop­u­lar Uno R3. Addi­tion­al­ly, SRAM has been upgrad­ed from 2 kB to 32 kB, and flash mem­o­ry from 32 kB to 256 kB to sup­port more com­plex projects. Respond­ing to com­mu­ni­ty feed­back, the USB port is now USB‑C, and the max­i­mum pow­er sup­ply volt­age has been raised to 24 V with an enhanced ther­mal design. The board includes a CAN bus and an SPI port, enabling users to reduce wiring and per­form par­al­lel tasks by con­nect­ing mul­ti­ple shields. A 12-bit ana­log DAC is also pro­vid­ed on the board. SpecificationsHere you will find the tech­ni­cal spec­i­fi­ca­tions for the Arduino® UNO R4 WiFi.Note on ESP head­er: the ESP32-S3 mod­ule on this board oper­ates on 3.3 V. The ESP head­er locat­ed close to the USB‑C® con­nec­tor is 3.3V only and should not be con­nect­ed to 5 V. This may dam­age your board.Note on Qwi­ic con­nec­tor: the Qwi­ic con­nec­tor on this board is con­nect­ed to a sec­ondary I2C bus on this board, IIC0. This con­nec­tor is 3.3 V only, con­nect­ing high­er volt­ages may dam­age your board. To ini­tial­ize this bus, use Wire1.begin() instead.Max­i­mum cur­rent draw per pin: the UNO R4 series’ max­i­mum cur­rent draw per GPIO is 8 mA, which is sig­nif­i­cant­ly low­er than pre­vi­ous ver­sions. Exceed­ing this lim­it may dam­age your pin / board.BoardNameArduino® UNO R4 WiFiSKUARD-20623Micro­con­trollerRene­sas RA4M1 (Arm® Cortex®-M4)Radio Mod­uleESP32-S3-MINI-1-N8USBUSB‑C®Pro­gram­ming PortPinsDig­i­tal I/O Pins14Ana­log input pins6DAC1PWM pins6Exter­nal inter­rupts2,3Com­mu­ni­ca­tionUARTYes, 1xI2CYes, 1xSPIYes, 1xCANYes 1 CAN BusPow­erCir­cuit oper­at­ing volt­age5 V (ESP32-S3 is 3.3 V)Input volt­age (VIN)6–24 VDC Cur­rent per I/O Pin8 mAClock speedRA4M148 MHzESP32-S3-MINI-1-N8up to 240 MHzMem­o­ryRA4M1256 kB Flash, 32 kB RAMESP32-S3-MINI-1-N8384 kB ROM, 512 kB SRAMDimen­sionsWidth68.85 mmLength53.34 mmArduino Uno R4 WiFi vs. MinimaThe Arduino Uno R4 comes in 2 ver­sions (Min­i­ma and WiFi) and offers the fol­low­ing new fea­tures com­pared to the Uno R3:Arduino Uno R4 Min­i­maArduino Uno R4 WiFiUSB‑C con­nec­torUSB‑C con­nec­torRA4M1 from Rene­sas (Cor­tex-M4)RA4M1 from Rene­sas (Cor­tex-M4)HID device (emu­late a mouse or a key­board)HID device (emu­late a mouse or a key­board)Improved pow­er sec­tion (up to 24 V through VIN)Improved pow­er sec­tion (up to 24 V through VIN)CAN busCAN busDAC (12 bits)DAC (12 bits)Op ampOp ampWiFi/Bluetooth LEFul­ly-address­able LED matrix (12x8)Qwi­ic I²C con­nec­torRTC (with sup­port for a buffer bat­tery)Run­time errors diag­nos­ticsModel ComparisonUno R3Uno R4 Min­i­maUno R4 WiFiMicro­con­trollerMicrochip ATmega328P (8‑bit AVR RISC)Rene­sas RA4M1 (32-bit ARM Cor­tex-M4)Rene­sas RA4M1 (32-bit ARM Cor­tex-M4)Oper­at­ing Volt­age5 V5 V5 VInput Volt­age6–20 V6–24 V6–24 VDig­i­tal I/O Pins141414PWM Dig­i­tal I/O Pins666Ana­log Input Pins666DC Cur­rent per I/O Pin20 mA8 mA8 mAClock Speed16 MHz48 Mhz48 MhzFlash Mem­o­ry32 KB256 KB256 KBSRAM2 KB32 KB32 KBUSBUSB‑BUSB‑CUSB‑CDAC (12 bit)–11SPI122I²C122CAN–11Op amp–11SWD–11RTC––1Qwi­ic I²C con­nec­tor––1LED Matrix––12x8 (96 red LEDs)LED_BUILTIN131313Dimen­sions68.6 x 53.4 mm68.9 x 53.4 mm68.9 x 53.4 mm ResourcesGitHub CodesDatasheetSchemat­ics
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