Category: Makers

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.

Check out the full project tutorial

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.

View the full article: https://circuitdigest.com/microcontroller-projects/diy-raspberry-pi-rgb-lcd-hat

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

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

View the full DIY project tutorial

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.

View the full project here: https://circuitdigest.com/microcontroller-projects/arduino-rc-car-using-bldc-motors-and-nrf24l01-rf-module

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

Solenoid Door Lock using Arduino and RFID

In this DIY project we use a real Solenoid Door Lock and control it with RFID and Arduino. Here a Hall Effect sensor and a magnet are used to detect the door movement. Hall Effect sensor will be placed on the door frame and the magnet on the door itself. When the Hall Effect sensor and magnet are close to each other, Hall Effect sensor will be in a low state and the door will remain closed, and when the sensor and magnet are not close means the door is open and hall sensor is in the high state. 

View the full project tutorial

For more Arduino based projects, visit Arduino Project Section

How to build a Simple Solar Powered Automatic Garden Light

For those who have a keen interest in gardening, a garden light would provide an option to admire the beauty of their plants even during the night time. These lights will normally be placed inside the garden, far from electrical outlets because it is not a good idea to run wires through your garden soil which will be wet and toiled most of the time. This is where Solar-powered garden lights come into the picture. These lights will have a battery that will be charged through a solar panel in the day time and during the night time the energy from the battery will be used to power the lights and the cycle repeats

View full project tutorial: https://circuitdigest.com/electronic-circuits/solar-powered-automatic-garden-lights

Watch the video:https://www.youtube.com/watch?v=TiOpZE2rW38&

How to Make An Arduino Based CNC Plotting Machine

View the complete DIY tutorial here: https://circuitdigest.com/microcontro… 

This DIY Arduino CNC Machine can draw most of the basic shapes, texts and even cartoons. It’s operation is similar to the way a human hand writes. It’s faster and more accurate compared to the way a human being can write or draw.

For a CNC plotting machine to operate, 3 axes are required (x-axis, y-axis and z-axis. The x-axis and y-axis work in unison to create a 2D image on a plain paper. These x and y axis are placed 90 degrees to each other such that any point on the plain surface is defined by a given value of x and y. The z-axis is used lift and lower the pen onto the plain paper.

Depending on the image to be drawn, the computer will generate the appropriate coordinates and send them to the microcontroller through the USB port. The microcontroller interprets these coordinates and then controls the positions of the motors to create the image. Here we have used Arduino as the Microcontroller to build this CNC Machine.