Arduino UNO R3
The classic Arduino board: ATmega328P at 16MHz with 14 digital I/O pins, 6 analogue inputs and USB-B, in a removable DIP package.
Back in stock soon
UNO-format board with an ATmega4809, a u-blox NINA-W102 radio for Wi-Fi and Bluetooth LE, an IMU and a crypto chip.
Temporarily out of stock · back soonArduino UNO WiFi Rev2 brings Wi-Fi and Bluetooth Low Energy to the familiar UNO form factor, making it an easy entry point to the Internet of Things. It combines an ATmega4809 microcontroller with the u-blox NINA-W102 radio module, an on-board inertial measurement unit and a secure crypto element for safe connections.
It is compatible with the Arduino Cloud and keeps the UNO pin layout, so many existing shields fit.
| Microcontroller | ATmega4809 |
|---|---|
| Operating Voltage | 5V |
| Input Voltage (recommended) | 6 - 20V |
| Digital I/O Pins | 14 — 5 Provide PWM Output |
| PWM Digital I/O Pins | 5 |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 20 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 48 KB (ATmega4809) |
| SRAM | 6,144 Bytes (ATmega4809) |
| EEPROM | 256 Bytes (ATmega4809) |
| Clock Speed | 16 MHz |
| Radio module | u-blox NINA-W102 |
| Secure Element | ATECC608A |
| Inertial Measurement Unit | LSM6DS3TR |
| LED_BUILTIN | 25 |
| Length | 68.6 mm |
| Width | 53.4 mm |
| Weight | 25 g |
| Manufacturer | Arduino |
| Manufacturer part no. | ABX00021 |
| Hossam UK code | HUK-45824 |
| Standard UK delivery | £3.95, free on orders over £100. Delivered in 2–3 working days. |
|---|---|
| Next working day | £6.95. Order by 2pm, Monday to Friday. |
| Returns | Return unopened items within 14 days for a full refund. Faulty items are covered by the manufacturer’s warranty. |
| WEEE | We offer free take-back of old electrical equipment when you buy a similar item. |
The classic Arduino board: ATmega328P at 16MHz with 14 digital I/O pins, 6 analogue inputs and USB-B, in a removable DIP package.
Back in stock soonArduino UNO R3 with a surface-mount ATmega328P, for builds where the microcontroller stays on the board.
Back in stock soon32-bit UNO: Renesas RA4M1 Arm Cortex-M4 at 48MHz with 256KB flash, USB-C, a DAC and CAN, keeping the UNO shape and 5V logic.
Back in stock soonUNO R4 with an ESP32-S3 for Wi-Fi and Bluetooth, a 12×8 LED matrix, a Qwiic connector and USB-C.
Back in stock soon