Category: project

Coin Sorting Machine using Arduino

In this project we are building an Arduino counting machine using IR sensors. This machine counts and sorts the coins in different sections with the help of an Infrared sensor. Here, an arrangement is made where IR sensors are placed to sense different coins, and Arduino UNO is used for processing the data and showing the total count value on 16×2 LCD.

View the full project tutorial

Build your own Adjustable Electronic DC Load using Arduino

If you have ever worked with Batteries, SMPS circuits or other Power supply circuits, then often it would have occurred that you have to test your power source by loading it to check how it performs under different loading conditions. A device that is commonly used to perform this type of test is called a Constant Current DC Load, which allows us to adjust the output current of your power source and then keeps it constant until it is adjusted again changes. In this tutorial, we will learn how to build our very own Adjustable Electronic Load using Arduino, which can take a maximum input voltage of 24V and drain current as high as 5A. For this project, we have used PCB boards which are manufactured by AllPCB, a china based professional PCB manufacturing and assembling service provider.

View the full DIY project tutorial: https://circuitdigest.com/microcontroller-projects/adustable-electronic-dc-load-using-arduino

Smart Restaurant Menu Ordering System using Arduino

In this project, we are building a Smart Restaurant Project using Arduino, TFT display, and 433MHz RF transmitter/receiver module. Here the transmitter section will consist of Arduino Uno, TFT display, and an RF transmitter, using which customers can select the food items and place the order. While the receiver section consists of an Arduino Uno, LCD module, RF receiver, and a Buzzer, which will be installed in the restaurant kitchen to track the order items.

Components Required

Arduino Uno (2)

433MHz RF Transmitter & Receiver

2.4" TFT LCD Touch shield

16×2 LCD Module

I2C Module

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Long Range Arduino Based Walkie Talkie using nRF24L01

We are living in the era of 5G and 5G-enabled devices; however, old technologies like the walkie-talkie system and RF communication system are still paramount in scenarios where a remote, short distance, cheap, and low-cost communication is required. For example, if you have a building or heavy-weight bearing construction company, then your workers need to communicate with each other for co-ordinated working. With the help of a walkie-talkie, they can communicate with each other and spread short massage or instructions by just pressing the “PTT” button to transmit voice for other workers, for them to listen and follow the instruction. Another application could be in the smart helmets to communicate among a pack of riders during a long drive, the suggested model here can communicate among six people at a time.

View the full project tutorial: https://circuitdigest.com/microcontroller-projects/arduino-walkie-talkie-using-nrf24l01

Water Flow Sensor using Arduino

If you have ever visited large scale manufacturing companies, the first thing you will notice is that they are all automated. Soft Drink Industries and Chemical industries have to constantly measure and quantify the liquids that they are handling during this automation process, and the most common sensor used to measure the flow of a liquid is a Flow Sensor. By using a flow sensor with a microcontroller like Arduino, we can calculate the flow rate, and check the volume of liquid that has passed through a pipe, and control it as required.

View the full project tutorial: https://circuitdigest.com/microcontroller-projects/arduino-based-water-flow-sensor

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DIY Arduino Pedometer – Counting Steps using Arduino and Accelerometer
Pedometers are the devices that only used to count footsteps. So in this tutorial, we are going to build an easy and cheap DIY Pedometer using Arduino and accelerometer. This Pedometer will count the number of footsteps and display them on a 16×2 LCD module

This is an Arduino based QR code generator showing the QR code on SSD1306 OLED. 

View the full project details here

ESP32 Based Webserver for Temperature and Humidity Measurement using DHT11 Sensor

Today we will build an ESP32 based webserver to display the temperature and humidity values from the DHT11 sensor. ESP32 board will read the temperature and humidity data from the DHT11 sensor and display it on the Webpage. Here the IFTTT is also used to send the Email notifications when the temperature goes beyond a particular limit.

View the full project tutorial here: https://circuitdigest.com/microcontroller-projects/esp32-webserver-for-temperature-and-humidity-measurement-using-dht11-sensor

Automatic Bottle Filling System using Arduino

Here we are going to design a prototype for Automatic Bottle Filling Machine using Arduino Uno, conveyor belt, solenoid valve, IR sensor, and Stepper motor. Belt conveyor is driven by a stepper motor at a constant preset speed. The stepper motor will keep driving the belt until an IR sensor detects the presence of a bottle on the belt. We used the IR sensor as an external trigger. So whenever the IR sensor goes high it sends a trigger to Arduino to stop the motor and turn on the solenoid valve.

check out the full project here:

https://circuitdigest.com/microcontroller-projects/automatic-bottle-filling-system-using-arduino

Arduino Home Automation using Acoustic Connectivity powered by Chirp

So in this project, we build an Acoustic Home Automation Device in which we will be able to control this smart device without using any wireless connections like Wi-Fi or Bluetooth. We will use Actions for Google and Dialogflow to build a test application for our Google Assistant to make it play encoded audio (Chirp). This audio will then be captured by the Arduino nano BLE sense board running the Chirp Arduino Program, based on the message encoded in the data the Arduino board could perform any action like toggling an AC load controlling the RGB LED, etc. It might sound like a lot, but it is relatively simple. 

Check out the project here