The Arduino Uno is a widely embraced open-source microcontroller board renowned for its accessibility and versatility. Powered by the ATmega328P microcontroller, it boasts 14 digital and 6 analog input/output pins, facilitating seamless connections with sensors and devices. The USB interface enables easy programming and communication with computers, while its voltage regulator accommodates various power sources. Operating at 16 MHz, the Uno provides a balanced mix of processing power and energy efficiency. With 32 KB of Flash memory, 2 KB of SRAM, and 1 KB of EEPROM, it offers ample storage for code and data. The user-friendly Arduino IDE simplifies the programming process, making the Uno an ideal choice for both beginners and seasoned developers in crafting diverse electronic projects.

The DHT11 is a versatile and cost-effective digital sensor designed for measuring humidity and temperature in various applications. Integrating both sensing functions into a single device, it simplifies environmental monitoring for projects requiring basic accuracy. Operating on a one-wire digital interface, the DHT11 is easily interfaced with microcontrollers like Arduino and is well-suited for DIY and educational projects. With an operating voltage range of 3.3V to 5.5V, it accommodates diverse electronic systems. Although its accuracy is modest, with humidity accuracy around ±5% and temperature accuracy approximately ±2°C, the DHT11's affordability and simplicity make it popular for applications such as home automation and weather stations.