Category: electronics

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

Install Node-RED to your Raspberry Pi with these few simple steps.

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

Gas Detection and PPM Measurement using PIC Microcontroller and MQ Gas Sensors

MQ series Gas sensors are very common types of sensors used in Gas Detectors to detect or measure certain types of Gases. These sensors are widely used in all Gas related devices like from simple Smoke Detectors to Industrial Air Quality Monitors. We have already used these MQ gas sensors with Arduino to measure some harmful gases like Ammonia. In this article, we will learn how to use these gas sensors with PIC Microcontrollers, to measure the PPM value of the gas and display it on a 16×2 LCD.

View the full article: https://circuitdigest.com/microcontroller-projects/gas-detection-and-ppm-measurement-using-pic-microcontroller-and-mq-gas-sensor

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

View the full project details here

What is Industry 4.0? Nine Pillars of Industry 4.0

Industry 4.0 is the fancy name given to the fourth Industrial revolution. In this article, we will discuss about what is Industry 4.0 and how is it going to enhance the future of Industries? Why such a buzz about it? Why failing to adopt it may kill your business? Let us take a look. It is sometime spelled as Industrie 4.0, this is the German translation of Industry so both can be used interchangeably.

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DIY Pick and Place Robotic Arm using ARM7-LPC2148 ARM Microcontroller
In this tutorial we will use a 3D printed robotic ARM that was built by following the procedure in thingiverse. The ARM uses 4 servo motor for robotic ARM movement. If you do not have a printer, you can also build your arm with simple cardboards like we built for our Arduino Robotic Arm Project. For inspiration you can also refer to the Record and Play Robotic Arm that we built earlier using Arduino.

Check out the full DIY project here: https://circuitdigest.com/microcontroller-projects/diy-robotic-arm-using-lpc2148-microcontroller

12V 1A SMPS Power Supply Circuit Design

In this tutorial we will cover how to build a 12v SMPS circuit that would convert AC mains power to 12V DC with a maximum current rating of 1.25A. This circuit can be used to power small loads or even be adapted into a charger to charge you lead-acid and lithium batteries.

Find here the DIY article: https://circuitdigest.com/electronic-circuits/12v-smps-power-supply-circuit-design-on-pcb

Arduino Controlled Musical Fountain using Sound Sensor

The basic idea of this Arduino Water Fountain is to take an input from any external sound source like mobile, iPod, PC etc., sample the sound and break it down to different voltage ranges, then use the output to turn on various Relay. We first used a condenser mic based sound sensor module to perform on the sound source to split the sounds into different voltage ranges. Then the voltage will be fed to op-amp to compare sound level with a particular limit. The higher voltage range will correspond to a relay switch ON which comprises a musical water fountain operating to the beats and rhythms of the song. So here we are building this Musical Fountain using Arduino and sound sensor.

Find here the full project: https://circuitdigest.com/microcontroller-projects/arduino-controlled-water-fountain-using-sound-sensor

Watch the project demonstration video here: https://www.youtube.com/watch?v=kEwq_YNiBbE

Arduino HM-10 BLE Module Tutorial

The HM10 has become a very popular Bluetooth 4.0 BLE module. The HM10 is a Bluetooth 4.0 based module only, so it will not connect with Bluetooth 2/2.1 module such as HC-05, HC-06 and other Bluetooth modules. The HM10 is controlled via AT commands sent over the serial UART connection. HM-10 is a Bluetooth Low Energy (BLE) module, to know more about this module, check out the HM-10 BLE datasheet

Learn how to use HM10 with Arduino here: https://circuitdigest.com/microcontroller-projects/how-to-use-arduino-and-hm-10-ble-module-to-control-led-with-android-app