ELEGOO UNO R3 CH340C Board and 5PCS Ultrasonic Sensors, for Sensors, Smart Devices, Robotics, STEM Learning and DIY Electronics

Build Projects That React to the Real WorldPair a controller with sensing modules to detect distance, motion, light, sound, temperature, humidity, and other real-world inputs. Includes UNO R3 CH340C Board and 5PCS Ultrasonic Sensors in one convenient project combination.; What You Get from UNO R3 CH340C BoardUNO R3 compatible CH340C controller board for coding, module control, and breadboard projects. It helps users build practical skills instead of only reading theory, making each lesson easier to test, modify, and understand.; Why Add 5PCS Ultrasonic SensorsFive HC-SR04 ultrasonic distance sensor modules for ranging, obstacle detection, robotics, and automation.

The added hardware gives you more room to expand, repeat, compare, or share projects without stopping for missing essentials.; Build Smarter, More Responsive ProjectsExplore distance detection, environmental monitoring, alarms, obstacle avoidance, light/sound reaction, line tracking, smart-home concepts, and robotics add-ons.; Made for Real Learning, Not Just UnboxingIdeal for students, teachers, hobbyists, and makers who want reusable hardware for many projects. Drivers, libraries, example code, or IDE configuration may be required depending on your computer and project.