12 - Arduino Nano Motor Driving with BD139 Transistor. 13 - Transistor Driver Circuit Using 547 and BD139. 14 - Read switch and Buzzer simulation with and Without Arduino nano. 15 - PIR Sensor ...

Overall, this circuit diagram showcases the essential components and connections necessary for the Human-following robot to operate effectively. Circuit Connection: Arduino and HC-SR04 Ultrasonic ...

Interfacing an Ultrasonic Sensor with Arduino: Measures distance to an object using an HC-SR04 ultrasonic sensor. LED Flowing Lights: Creates a flowing or chasing LED effect like a marquee or Knight ...

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Circuit Diagram. The image below shows the Arduino circuit diagram for building a smart bin. As you can see it is very simple, it just has an ultrasonic sensor and a servo motor connected to the ...

1 Arduino Ultrasonic Sensor (HC-SR04) 1 buzzer; Ultrasonic sensor, mounting circuit; It is a very simple circuit. On the one hand, we will have all the alerts, acoustic and visual, and on the other ...