Current Loop on Instagram: "🧼 DIY Automatic Hand Sanitizer using Arduino! This project is about making an automatic hand sanitizer using an ultrasonic sensor and Arduino. You might have seen many hand sanitizers based on infrared sensors, which are simple and easy to build. In this project, we use an ultrasonic sensor for hand detection. The detection range can be easily adjusted in the Arduino code according to your needs. The Arduino continuously sends signals to trigger the ultrasonic sensor