Circuit Diagram: Working Arduino Uno processes the data collected from an Ultrasonic sensor and control the servo motor to press the pump bottle of hand sanitizer and also print the message ...

Don’t worry we got you covered. We have created this massive list of 37 beginner friendly Arduino projects for you. This guide offers over 30 beginner-friendly project ideas, complete with code and ...

Automatic-Hand-Sanitizer-Dispenser-using-Arduino This project demonstrates the development of a contactless automatic hand sanitizer dispenser using an ultrasonic sensor and a microcontroller (such as ...

Circuit Diagram The complete circuit diagram for this Covid19 Tracker & automatic hand sanitizer dispenser machine is given below The water pump is connected to the ESP32 through a relay module. Vcc ...

Figure 7 Schematic diagram of the automatic hand sanitizer dispenser (Second Design) According to the LM393 datasheet: “The LM393 series are dual independent precision voltage comparators capable of ...

In this article, we will build an automatic hand sanitizer dispenser that uses IR sensors to detect the presence of a hand and activates a pump to pour the liquid on the hand. The intention was to ...