The Wemos D1 is an Arduino-compatible WiFi development board based on the powerful ESP8266EX chip. It combines the ease of Arduino programming with built-in WiFi connectivity, making it ideal for IoT projects, home automation, sensor monitoring, and wireless control applications.

Designed with the Uno form factor, the Wemos D1 supports most Arduino shields and can be programmed using the Arduino IDE with the ESP8266 board package. It features multiple GPIO pins, analog input, and serial communication interfaces, providing flexibility for various electronic projects.

Specifications:

• Microcontroller: ESP8266EX
• Operating Voltage: 3.3V
• Input Voltage (recommended): 7–12V (via barrel jack or VIN)
• Digital I/O Pins: 11
• Analog Input Pins: 1 (A0, max 3.2V)
• Flash Memory: 4 MB
• Clock Speed: 80 MHz / 160 MHz
• WiFi: 802.11 b/g/n (built-in)
• USB to Serial Chip: CH340 (or CP2102 depending on version)
• Compatibility: Arduino IDE, NodeMCU, MicroPython
• Dimensions: 68.6 x 53.4 mm

Key Features:

• Built-in WiFi for IoT connectivity
• Compatible with Arduino IDE
• Same layout as Arduino Uno for shield support
• Micro USB port for easy programming and power
• Ideal for IoT, automation, and wireless sensor projects