Product details
CH340G Board compatible with Arduino
The Uno+WiFi R3 is a fully integrated board that combines the Uno R3 ATmega328 microcontroller with the WiFi ESP8266 chip, along with 8Mb of memory, all on a single board. Inspired by the widely used arduino uno, this board brings added wireless capabilities without compromising simplicity. Both modules can operate together or separately, each with their own pinout headers.
This board provides a convenient solution for developing new projects that require both Uno and WiFi functionalities. For users exploring options like the arduino uno wifi rev3 or arduino uno rev3 wifi, this board offers a cost-effective and flexible alternative with similar hybrid functionality. It includes a USB-serial converter, CH340G, allowing for easy updating of sketches and firmware for both ATmega328 and NodeMCU ESP8266.
Essentially a modernized version of the classic Arduino UNO R3 board, the Uno+WiFi R3 offers simple operations and includes a DIP switch to connect the different modules in various configurations. LED lights are provided for connecting peripheral sensors and modules, making it a versatile choice for a wide range of projects.
Check out the entire range of Compatible Arduino Boards
Does Arduino R3 have WiFi?
A common question is “does Arduino r3 have wifi” — the standard Arduino Uno R3 does not include built-in WiFi. However, boards like the Uno+WiFi R3 solve this limitation by integrating the ESP8266 WiFi module directly onto the board, eliminating the need for external WiFi shields.
Features:
• Combines microcontroller and WiFi module on a single board
• Compatible with Arduino Uno-based development environments
• Dual functionality: operate ATmega328P and ESP8266 independently or together
• Easy switching using onboard DIP switch
• Ideal for IoT, automation, and wireless communication projects
Applications:
• WiFi-based IoT applications.
• IoT home automation.
• Internet Smoked Alarm.
• Incubator Controller.
• Security Alarms.
Comparison With Similar Boards:
Specification
UNO Wifi
UNO SMD
UNO R3
Microcontroller
ATmega4809
ATmega328P (SMD)
ATmega328P (Through hole)
USB connector
Micro-USB
USB-B
USB-B
Digital I/O Pins
14
14
14
Analog input pins
6
6
6
PWM pins
5
6
6
UART
Yes
Yes
Yes
I2C
Yes
Yes
Yes
SPI
Yes
Yes
Yes
I/O Voltage
5V
5V
5V
Input voltage (nominal)
7-12V
7-12V
7-12V
DC Current per I/O Pin
20mA
20 mA
20 mA
Power Supply Connector
Barrel Plug
Barrel Plug
Barrel Plug
clock speed
16 MHz
16 MHz
16 MHz
USB-Serial chip
ATmega16U2
CH340
ATmega16U2
SRAM
6.144KB
2KB
2KB
Flash Memory
48KB
32KB
32KB
EEPROM
256 Bytes
1KB
1KB
Dimensions
68.6 mm x 53.4 mm
68.6 mm x 53.4 mm
68.6 mm x 53.4 mm
RADIO MODULE
u-blox NINA-W102
-
-
Inertial Measurement Unit
LSM6DS3TR (3D accelerometer)
-
-
LED_BUILTIN
25
13
13
Wi-Fi Microprocessor
Yes
-
-
The Uno+WiFi R3 is a fully integrated board that combines the Uno R3 ATmega328 microcontroller with the WiFi ESP8266 chip, along with 8Mb of memory, all on a single board. Inspired by the widely used arduino uno, this board brings added wireless capabilities without compromising simplicity. Both modules can operate together or separately, each with their own pinout headers.
This board provides a convenient solution for developing new projects that require both Uno and WiFi functionalities. For users exploring options like the arduino uno wifi rev3 or arduino uno rev3 wifi, this board offers a cost-effective and flexible alternative with similar hybrid functionality. It includes a USB-serial converter, CH340G, allowing for easy updating of sketches and firmware for both ATmega328 and NodeMCU ESP8266.
Essentially a modernized version of the classic Arduino UNO R3 board, the Uno+WiFi R3 offers simple operations and includes a DIP switch to connect the different modules in various configurations. LED lights are provided for connecting peripheral sensors and modules, making it a versatile choice for a wide range of projects.
Check out the entire range of Compatible Arduino Boards
Does Arduino R3 have WiFi?
A common question is “does Arduino r3 have wifi” — the standard Arduino Uno R3 does not include built-in WiFi. However, boards like the Uno+WiFi R3 solve this limitation by integrating the ESP8266 WiFi module directly onto the board, eliminating the need for external WiFi shields.
Features:
• Combines microcontroller and WiFi module on a single board
• Compatible with Arduino Uno-based development environments
• Dual functionality: operate ATmega328P and ESP8266 independently or together
• Easy switching using onboard DIP switch
• Ideal for IoT, automation, and wireless communication projects
Applications:
• WiFi-based IoT applications.
• IoT home automation.
• Internet Smoked Alarm.
• Incubator Controller.
• Security Alarms.
Comparison With Similar Boards:
Specification
UNO Wifi
UNO SMD
UNO R3
Microcontroller
ATmega4809
ATmega328P (SMD)
ATmega328P (Through hole)
USB connector
Micro-USB
USB-B
USB-B
Digital I/O Pins
14
14
14
Analog input pins
6
6
6
PWM pins
5
6
6
UART
Yes
Yes
Yes
I2C
Yes
Yes
Yes
SPI
Yes
Yes
Yes
I/O Voltage
5V
5V
5V
Input voltage (nominal)
7-12V
7-12V
7-12V
DC Current per I/O Pin
20mA
20 mA
20 mA
Power Supply Connector
Barrel Plug
Barrel Plug
Barrel Plug
clock speed
16 MHz
16 MHz
16 MHz
USB-Serial chip
ATmega16U2
CH340
ATmega16U2
SRAM
6.144KB
2KB
2KB
Flash Memory
48KB
32KB
32KB
EEPROM
256 Bytes
1KB
1KB
Dimensions
68.6 mm x 53.4 mm
68.6 mm x 53.4 mm
68.6 mm x 53.4 mm
RADIO MODULE
u-blox NINA-W102
-
-
Inertial Measurement Unit
LSM6DS3TR (3D accelerometer)
-
-
LED_BUILTIN
25
13
13
Wi-Fi Microprocessor
Yes
-
-
