Description
Product Overview
Unlock the full potential of your Arduino projects with the UNO+WiFi R3 Development Board. This all‑in‑one solution combines the classic ATmega328P microcontroller with an ESP8266 WiFi module, powered by a CH340 USB‑TTL bridge for seamless serial communication. Designed for 6V‑9V power supplies, it’s perfect for hobbyists, makers, and professionals looking to add wireless connectivity to their projects without compromising on the familiar Arduino Uno layout.
Key Features
- Dual‑core architecture: ATmega328P + ESP8266 for powerful processing and WiFi connectivity.
- 32 MB flash memory on the ESP8266, enabling complex firmware and OTA updates.
- CH340G USB‑to‑Serial converter for reliable, low‑cost PC communication.
- Compatible with Arduino Uno R3 pinout – plug directly into existing shields and accessories.
- Wide operating voltage: 6 V to 9 V, ideal for battery‑powered and regulated power supplies.
- Built‑in 5V regulator and voltage divider for safe 3.3V logic levels.
- Compact 3.3 × 2.5 cm footprint fits into standard breadboards and enclosures.
- Pre‑programmed bootloader for instant WiFi setup and OTA firmware upgrades.
- Compatible with NodeMCU, WeMos One, and other ESP8266‑based development boards.
Technical Specifications
- Microcontroller: ATmega328P (16 MHz, 32 KB SRAM, 2 KB EEPROM)
- WiFi Module: ESP8266 (802.11b/g/n, 32 MB flash)
- USB Interface: CH340G USB‑TTL bridge
- Operating Voltage: 6 V – 9 V (5 V regulator output)
- Logic Levels: 3.3 V (ESP8266) & 5 V (ATmega328P)
- Pin Count: 54 digital I/O (14 PWM), 6 analog inputs, 2 UART, 1 SPI, 1 I²C
- Dimensions: 3.3 cm × 2.5 cm (1.3 in × 1.0 in)
- Operating Temperature: –40 °C to +85 °C
Why Choose This Board
Whether you’re building a smart home hub, a remote sensor network, or an IoT prototype, this UNO+WiFi R3 board gives you the best of both worlds: the simplicity and extensive ecosystem of the Arduino Uno, coupled with the wireless capabilities of the ESP8266. Its built‑in USB‑TTL bridge eliminates the need for external modules, reducing BOM costs and assembly time.
Compatible Projects
From weather stations and home automation to robotics and wearable tech, the UNO+WiFi R3 is ready to power:
- IoT dashboards and MQTT brokers
- Wireless sensor networks and remote monitoring
- WiFi‑enabled robotics and drones
- Smart lighting and HVAC controls
- Educational kits and rapid prototyping labs
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