Circuit Diagram and Explanation: Circuit connections for this Ultrasonic Alarm are very simple. Trigger pin of ultrasonic sensor is connected to pin no. 12 of Arduino and Echo pin of sensor is ...

The set-up process is very simple, and best understood by referring the wiring diagram. If everything goes right,you should see the burning eye of the red LED when there is no object in the safe-zone ...

It utilizes an ultrasonic sensor to measure distance and triggers an alarm when an object or person comes within a predefined proximity range (<25 cm).The Ultrasonic-Based Alarm System provides a ...

11 - Arduino Nano Buzzer simulation. 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 ...

Connecting together pins 7 & 8 on the p.c. board will make the circuit to stay triggered till it is manually reset after an alarm. This can be very useful if you want to know that there was an attempt ...

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 ...

Step 4: Assembling The Circuit. We will need to design two circuits for this project. The first circuit will be placed at a suitable place in a blind man’s stick and the second one will be an RF ...

In this project, the ultrasonic sensor module type KY-050 is used together with an Arduino and a type KY-012 active buzzer to help while reverse parking our vehicle. As the distance to the objects ...