Skip to main content

23. Distance meter

Hello everyone!

Today we will be learning how to make a distance meter using Arduino. For this project, we will be using an ultrasonic sensor (HC-SR04), temperature and humidity sensor (DHT11) and 0.96" OLED display module. 
If you are not familiar with the OLED display module, please feel free to refer to my previous project:
Simple Weather Station
Refer to this datasheet to learn about the ultrasonic sensor.
How does the distance meter work?

The ultrasonic sound sensor has an ultrasonic wave transmitter and receiver. A transmitter emits a signal which is reflected off an object - within 2 cm to 400 cm - and received by the receiver. The time taken for the signal to travel from the transmitter to the receiver is divided by two and multiplied by the speed of sound in air to give us the distance between the sensor and the object.
Distance (m) = (Duration/2 )/1000 x Speed of sound
The speed of sound in air is affected by the temperature of air, so the DHT11 is used in this project. The OLED display module displays the distance and the temperature of the air. 

Supplies

  • Arduino Uno/ Nano
  • Solderless Breadboard
  • Ultrasonic sound sensor (HC-SR04)
  • 0.96" OLED display module 
  • Temperature and Humidity sensor - DHT11
  • Male-to-male jumper wires (x24) - 10cm
  • 3 pin female-to-female jumper wires (x4) - 70cm
  • Type A/B cable (for Arduino Uno)

Setup


Your hardware setup must look somewhat similar to images above.

Connections

  • DHT11 - D7
  • (+) of DHT11 - 5V
  • (-) of DHT11 - GND
  • GND of ultrasonic sensor - GND
  • Trig pin of ultrasonic sensor - D5
  • Echo pin of ultrasonic sensor - D6

OLED Display Module

  • GND - Ground
  • VCC - 5V
  • D0 - D10
  • D1 - D9
  • RES - D13
  • DC - D11
  • CS - D12

Coding

Please refer to my previous project to learn about the coding. You will also be needing the Adafruit sensor library(https://github.com/adafruit/Adafruit_Sensor) and the Adafruit DHT library (https://github.com/adafruit/DHT-sensor-library) for this project.

According to the datasheet (which I mentioned in the first section), there must be 10 microseconds delay between the HIGH and LOW signal from the trigger pin. 

If you still need help with the codes of this project, please send a request to arduinoprojectsbyr@gmail.com and I will guide you.

Final Look

If you have any questions, or suggestions, regarding this project, please feel free to comment below or send an email to arduinoprojectsbyr@gmail.com.







Comments

Post a Comment

Popular posts from this blog

51. Buzz wire game using Arduino

Hello everyone! This is my first Arduino project in 2020 and it is going to be a fun and simple project. You would have heard of the Buzz Wire, a steady hand game, and today you will be learning to make one using Arduino. Hardware components used in this project Arduino Nano USB Type A to mini B cable (for Arduino Nano) Solderless Breadboard - Mini and Full-size LEDs (x2) - Green and Red Resistors (x2) - 220 Ω  Active Buzzer module (KY-012) LCD display module with I2C interface - 16x2 Male-to-Male Jumper wires (x4) - 10cm Female-to-Male Jumper wires (x5) - 20 cm Jumpers (x5) - to reduce the usage of wires Copper wire  Tape (or any form of insulation)  Setup Your hardware setup must look somewhat similar to the ones in the images above. The beginning and end of the copper wire maze must be taped to prevent conductivity between the wire loop and maze. Connections LCD display module with I2C interface GND - Ground VCC - 5V SDA - A4 SCL - A5
Post a Comment
Read more

71. Buzz Wire Game ( Version 2.0 ) using Arduino

Hey Everyone! I hope that everyone's safe during this pandemic. Today I am going to explain you about the second version of my Buzz wire game. People who are bored of staying indoors can find this game pretty interesting and fun to play.  If you are a beginner, you can start off with my first version of this project :  51. Buzz wire game using Arduino   Hardware components used in this project Arduino Uno Solderless Breadboard (x2) - Full/ Full+ LCD display module with I2C module - 16x2 Potentiometer - B20K Push-buttons (x3) Resistor - 220 Ω Active Buzzer module (KY-012) LED - Red Copper Wire - 19/ 20 gauge thick Male-to-Male Jumper wires - 10cm and 20cm Wire - Long enough to connect the loop of copper wire to ground Other tools required for this project Cutting pliers - To cut the right amount of copper wire Round-nose pliers - To bend the copper wire and make a maze and loop Hardware setup Connections Wire Maze - D2 Wire loop - Ground (GND) B20K Potentiometer S - A0 (+) - 5V (-)
1 comment
Read more

86. RFID Health tag (Arduino and Python)

 Hey everyone, Sorry I have not uploaded in a while. Today, I will be sharing an interesting project with all of you. This RFID Health tag project is useful when it comes to keeping track of vaccinated individuals, their biodata and their health conditions and medications. For this project, you will be needing Arduino and Python. Read on further to see how I did this project. Hardware components used in this project Arduino Uno Solderless Breadboard - Half+ MRFC522 RFID reader RFID key tags (x5) Push-buttons (x2) Male-to-Male Jumper wires (x12) USB Type A/ B cable (for Arduino Uno) Software required Arduino IDE - latest version recommended Python 3.8 Schematic MFRC522 RFID reader SDA/ SS - D10 SCK - D13 MOSI - D11 MISO - D12 IRQ - Not connected GND - Ground RST/ RESET - D9 3.3V - 3.3V Push-buttons Submit button - D4 Retrieve button - D5 Coding Arduino For this project, you will be using the following libraries: MFRC522 by miguelbalboa -  https://github.com/miguelbalboa/rfid SPI - In-bu
Post a Comment
Read more