Working: Whenever a person arrives at our home, so instead of pressing the bell, the person can raise hand at a distance of around 10cm so that the ultrasonic sensor can sense the presence a person and bell will ring automatically using servo motor without any touch to the bell.The plus point of the solution is that the solution can be applied.. It carries Bluetooth, Wi-Fi connectivity, and comes with an LCD screen, onboard IMU, microphone, buzzer, light sensor and infrared emitter. The Wio Terminal also features two multifunctional Grove ports which can be used to interface easily with plug-and-play Grove modules.. // Wio Terminal: Arduino Smart Doorbell // Author: Jonathan Tan.
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First, we will set up the hardware. We will start with the passive buzzer (i.e. speaker). We want to connect the positive end of the passive buzzer (denoted by “+” sign) to digital pin 8 on the Arduino. We will connect the other end of the passize buzzer to ground. Next, we will install the pushbutton for the doorbell.. The door sensor is also known as entry sensor, contact sensor, or window sensor. We will learn how door sensor works, how to connect door sensor to Arduino, how to program Arduino step by step. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino. Find this and other Arduino tutorials on.