Arduino Uno WiFi module

Index: ARD-06244

AVR ATmega328 microcontroller module equipped with the popular ESP8266 chip for WiFi communication. It has 32 kB of flash memory, 2 kB of RAM, 14 digital inputs/outputs of which 6 can be used as PWM channels, 6 analog inputs and popular communication interfaces.

Arduino Uno WiFi module
€33.25 tax excl.
Discontinued product
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Manufacturer: Arduino


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Popular version of Arduino Uno board with built-inESP8266 modulefor communication with WiFi network. It containsan ATmega328 microcontroller,equipped with 14 digital inputs/outputs, 6 of which can be used as PWM outputs (e.g. for controlling motors) and 6 analogue inputs. The circuit is clocked with a 16 MHz clock signal, has 32 kB of Flash memory and 2 kB of SRAM memory.

Built-inESP8266 moduleenables access to WiFi, which allows to create IoT (Internet of Things) network. The chip has an integrated TCP/IP stack. Arduino Uno WiFi can be programmed in the same way as a classic ArduinoUnoboard.

Arduino Uno WiFi - moduł, platforma, atmega328, płytka,

The subject of sale is the original Arduino product, Botland is an officialdistributor of this company.

Main features

Below we present some features that distinguish Arduino modules from other programmable tiles.

The name Description



Thanks to the installed bootloader, the appropriateUSB cable andsoftware from the manufactureris sufficient to program the device.



The layout of connectors enables installation of dedicatedArduino Shieldcovers.

WiFi module

Built-inESP8266 moduleallows access to WiFi, which allows to create an IoT (Internet of Things) network. The chip has integrated TCP/IP stack.



14 digital inputs/outputs enable, among other things, to control LEDs, relays and read button statuses.



The maximum current capacity of a single output is 40 mA.



6 PWM outputs allow e.g. for motor control and diode brightness adjustment.



6 inputs of the built-in 10-bit analogue-to-digital converter support, among others, sensors with analogue output.



The device supports popular communication interfaces, among others: UART, I2C and SPI.
Special functions Some pins have special functions, a brief description of which is available in our guide.



Atmega328 chip is clocked with 16 MHz signal, has 32 kB of flash memory, 1 kB EEPROM and 2 kB SRAM.

Power supply

DC connector

Any power supplyup to 12V with 5.5 x 2.1 mm DC connector can be used to power Arduino.

Power supply

USB port

The board can be powered from a computer viaa USB cable witha maximum current capacity of 500 mA. Arduino has a system that protects the socket against short circuit and too high current flow.

Connector .


The module has ICSP outputs for connecting an externalAVR programmer.



The IOREF pin allows for direct access to the voltage with which the I/O outputs work.



The connected LED on pin 13 allows debugging of simple programs.


3,3 V

The built-in voltage regulator enables external devices to be supplied with 3.3 V with current consumption of up to 50 mA.


in THT

Thanks to the THT threaded case, theAtmega328P microcontrollercan be easily replaced in case of damage.

First start-up

In order to make it easier to start working with the module, we have prepared aguidethat covers the installation and first start-up of Arduino environment.

The layout of elements on Arduino Uno WiFi board.

Communication with the WiFi module

On the board there is a special SPI/I2C - UART expander, which enables communication with ESP8266 module, leaving the main UART interface (pint RX0 and TX0), which is used to communicate Arduino with the computer. Communication details can be found onmanufacturer's website anduser's guide.

Communication diagram with ESP8266 WiFi chip.

Specification .

  • Supply voltage: 5 V to 12 V
  • Current consumption: approx. 130 mA
  • Microcontroller: ATmega328
    • Maximum clock frequency: 16 MHz
    • SRAM: 2 kB
    • Flash memory: 32 kB (5 kB reserved for bootloader)
    • EEPROM memory: 1 kB
  • WiFi module ESP8266:
    • Architecture: Tensilica Xtensa LX106
    • The tension of work: 3,3 V
    • Flash memory: 4 MB
    • RAM: 8 MB instructions, 12 MB data
    • Maximum clock frequency: 80 MHz
    • WiFi standard: 802.11 b/g/n 2.4 GHz
    • Wake up time from sleep mode: less than 2s
  • Ports I/O: 14
  • PWM outputs: 6
  • Number of analog inputs: 6 (A/C converter channels with 10 bits resolution)
  • Serial interfaces: UART, SPI, I2C
  • External interruptions
  • Connected LED on pin 13
  • USB A socket for programming
  • 5.5 x 2.1 mm DC connector for power supply
  • The set includes a plastic pad

UC - Microcontroller ATmega328
UC - Core 8-bit AVR
UC - Flash 32 kB
UC - RAM 2 kB
UC - Digital pins 14
UC - analog in 6
UC - freq 16 MHz
UC - A/C 10-bit
UC - PWM 6
UC - WiFi yes
Package width 0.001 cm
Package height 0.001 cm
Package depth 0.001 cm
Package weight 0.001 kg

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