Category: EE

DIY Automatic Hand Sanitizer Dispenser

In this project, we will build an Auto Hand Sanitizer Dispenser with an LCD which also shows the live count of Coronavirus cases. This project will use ESP32, Ultrasonic Sensor, 16×2 LCD Module, Water pump, and Hand Sanitizer.

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DIY Raspberry Pi RGB LCD HAT
Raspberry Pi Hats are the same as shields for Arduino, they can directly fit on the top of Raspberry Pi and don’t require any further connections. Here we are going to build an RGB LCD Hat for Raspberry Pi on PCB. This LCD Hat consists of a 16×2 LCD module, five switches, and three NeoPixel LEDs. Here switches are used to change the text on display and NeoPixel LEDs are used as indicators. These switches and Neo Pixels can be programmed according to requirements like switches can be used to display sensor values like temperature, humidity, etc. and Neo pixels can be used to display status like Red for indicating some error and green while receiving some data.

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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.

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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.

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What is Z-Wave Protocol and its Role in Smart Home Automation Solutions

Z-Wave is a wireless communications protocol developed primarily for use in home automation applications. It was developed in 1999 by Copenhagen based Zensys as an upgrade to a consumer light-control system they created. It was designed to provide the reliable, low-latency transmission of small data packets using low-energy radio waves at data rates up to 100kbit/s with a throughput of up to 40kbit/s (9.6kbit/s using old chips) and are suitable for control and sensor applications.

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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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Build your own Wi-Fi Repeater or Range extender using NodeMCU to connect all your IoT Devices

Arduino RC Car using Coreless DC Motors and nRF24L01 RF module

in this project, we will build a totally different type of RC car using Arduino, the main objective of this car is to achieve maximum speed, hence I decided to try out the coreless DC motor for an RC car. These motors are normally used in drones and are rated for 39000 RPM which should be more than enough to quench our speed thirst. The car will be powered with a small lithium battery and can be controlled remotely using the nRF24L01 RF 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.

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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.

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