Uno+WiFi R3 AtMega328p+NodeMCU ESP8266 4mb Memory USB-TTL CH340G Compatible for Arduino UNO

Uno + WiFi R3 ATmega328P + NodeMCU ESP8266 (4MB) USB-TTL CH340G Compatible Board

DIP Switch Configuration

• ATmega328 ↔ ESP8266 Communication: ON, ON, OFF, OFF, OFF, OFF, OFF
• USB ↔ ATmega328: OFF, OFF, ON, ON, OFF, OFF, OFF
• USB ↔ ESP8266 (Firmware / Sketch Upload): OFF, OFF, OFF, OFF, ON, ON, ON
• USB ↔ ESP8266 (Communication Mode): OFF, OFF, OFF, OFF, ON, ON, OFF
• All Modules Independent: OFF, OFF, OFF, OFF, OFF, OFF, OFF

Features

• Full integration of ATmega328P and ESP8266 Wi-Fi module on one board
• Onboard USB-TTL serial converter (CH340G)
• Supports independent or combined operation of both microcontrollers
• Built-in DIP switch for easy mode selection
• USB powered (5V, up to 500 mA)
• Logic level: 5V
• 14 Digital I/O pins and 6 Analog input pins
• Supports Wi-Fi 802.11 b/g/n (2.4 GHz)
• Wide operating temperature range

Technical Specifications

• Item Type: Development Board
• Board Type: Uno
• Microcontroller: ATmega328P
• Wi-Fi Module: ESP8266 (NodeMCU)
• Flash Memory: 4 MB
• Operating Voltage: 5 V
• Input Voltage (VIN / DC Jack): 9 – 24 V
• Input Voltage (Logic): 3.3 – 5 V
• Current Consumption: Approx. 800 mA
• USB-to-Serial Converter: CH340G
• USB Interface: Micro USB
• Clock Frequency: 16 MHz
• Operating Temperature: −40°C to +125°C

Physical Attributes

• Length: 70 mm
• Width: 53.5 mm
• Height: 15 mm
• Weight: Approx. 22g

Applications

• IoT and Wi-Fi based projects
• Arduino UNO and ESP8266 combined applications
• Home automation systems
• Wireless sensor networks
• Educational, DIY, and prototyping projects

Package Includes

• 1 × Uno + WiFi R3 ATmega328P + NodeMCU ESP8266 (4MB) USB-TTL CH340G Development Board