The Wemos D1 R1 is an Arduino UNO-style development board powered by the ESP8266 WiFi module, offering built-in 2.4GHz WiFi, digital I/O pins, and USB programming.
 Operating Voltage: 3.3V (Logic), 5V input via USB
 Compatible with Arduino IDE, NodeMCU firmware
 Ideal for IoT projects, smart home automation, and wireless sensor networks
 Compact, affordable, and perfect for students, makers, and hobbyists