Скачать или смотреть 33 DIY Arduino Distance Meter with Ultrasonic Sensor (HCSR04)

This video guides you through building a distance meter using an Arduino, an ultrasonic sensor (HCSR04), and an LCD. Here's a breakdown:

Project Overview

The project involves creating a distance meter using an ultrasonic sensor and an Arduino [00:19].
The distance meter can measure distances from 2 centimeters up to approximately 100 centimeters [00:28].
Required Equipment

Arduino Uno [01:27]
Ultrasonic sensor HCSR04 [01:27]
Backlit LCD (16x2) [01:27]
Jumper wires [01:49]
Solderless breadboard [01:55]
Ultrasonic Sensor (HCSR04)

The HCSR04 sensor measures distance by emitting ultrasound waves [03:10].
It emits waves at a frequency of 40 kHz [04:13].
The sensor calculates distance by measuring the time it takes for the sound waves to travel to an object and return [05:18].
The sensor has four pins: VCC, Trigger, Echo, and Ground [05:35].
The detection range is from 2 to 450 centimeters [06:14].
The resolution is 0.3 centimeters [06:39].
How it Works

To generate ultrasound, the trigger pin is kept in a HIGH state for 10 microseconds [07:18].
The sensor emits eight cycles of an ultrasonic burst [07:26].
The echo pin outputs a pulse with a duration proportional to the distance [07:43].
The speed of sound is approximately 340 meters per second [08:23].
The formula to calculate distance is: distance = (travel time / 2) * speed of sound [10:47].
Circuit Setup

Connect the trigger pin to digital pin 12 on the Arduino [11:32].
Connect the echo pin to digital pin 13 on the Arduino [11:41].
Connect the LCD data pins (D4-D7) to Arduino pins 8-11 [22:08].
Connect the LCD RS pin to Arduino pin 4 and the Enable pin to Arduino pin 6 [27:10].
Power the LCD and sensor with 5V from the Arduino [34:03].
Ground the appropriate pins [39:12].
Arduino Code

Include the LiquidCrystal library for LCD control [47:03].
Define the trigger and echo pins [49:23].
Declare variables for duration and distance [50:24].
In the setup() function, initialize the LCD and set pin modes [51:11].
In the loop() function:
Set the trigger pin LOW for 2 microseconds, then HIGH for 10 microseconds to trigger the sensor [53:37].
Use the pulseIn() function to read the duration of the echo pulse [55:55].
Calculate the distance in centimeters and inches [57:13].
Display the distance on the LCD [01:00:18].
Troubleshooting

Ensure all pin connections are correct [22:08].
Verify the correct trigger and echo pin assignments in the code [49:23].
Adjust the delay in the code if necessary for stable readings [53:50].
Connect pin number 3 to ground through a 5k resistor for proper display [42:39].
Hashtags:
#Arduino #UltrasonicSensor #DistanceMeter #DIYElectronics #HCSR04 #LCD #ArduinoProjects #Techleconline #IoT #Electronics #Tutorial #Maker #HowTo # সেন্সর #आईओटी