Category: project

Make use of an APA102 RGB LED Strip with an Arduino Uno in this project from

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:

Watch the project demonstration video here:

Learn how to setup Android on your Raspberry Pi.

Log Temperature Sensor Data to Google Sheet using NodeMCU ESP8266

There are many IoT clouds available to store and monitor the data from various sensors. With increasing popularity of IoT, more number of sensors are used every day and these sensors produce anonymous data which are useful to control other devices on the IoT network. These data can be studied further and used to modify design or improve the system performance. The Applications of Data Logging is vast and can be applied in Research Centres, Scientific Labs, Operation Theatres, Patient Monitoring System and many more.

Check out this useful DIY IoT tutorial:

Interfacing VL6180 ToF Range Finder Sensor with Arduino for Distance Measurement

VL6180 differs from other distance sensors as it uses a precise clock to measure the time taken by the light to reflect back from any surface. This gives VL6180 a benefit over other sensors because it’s more accurate and immune to noise.

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Make a Non-Contact Infrared Thermometer with IR Temperature Sensor
When debugging an electronics circuit or testing a new hardware design, often times I tend to check if the components on the board are getting hot abnormally by touching them. And if something is messed up (which usually is in the first try) these components could get as hot as 80°C or more burning not only the component but also my finger along with it. After burning my fingers for more times than I could remember I decided to build my own Temperature Gun using Arduino and an Infrared Temperature Sensor. This Thermal gun will be built using a non-contact temperature sensor called MLX90614; hence it can not only be used to measure component temperatures but can also be used for measuring body temperature, surface temperature, Heat ventilation and much more. Of course, these thermal guns are readily available in the market from renowned manufacturers like Fluke, Flir etc. But they are not light on your pockets and on top of that what is more fun than building your own gadgets.

Check out the project here: Arduino Infrared Thermometer Project

Lora Based GPS Tracker using Arduino and LoRa Shield
In this tutorial we will build GPS tracking system using LoRa, the system will consist of a Transmitter which will read the location information from the NEO-6M GPS module and transmit it wireless over Lora. The receiver part will receive the information and display it on a 16×2 LCD display.

Check out the tutorial here:

Raspberry Pi Bluetooth Speaker: Play Audio wirelessly using Raspberry Pi

In this post we will build Raspberry Pi based Bluetooth Speaker by fusing the power of A2DP, Linux and audio codec to stream the data packets from an audio source to an audio sink wirelessly. To do so we are going to hack a little bit of Linux system and write a piece of code in bash and python and we will be in business.

Check out the full post here

Arduino Whistle Detector Switch using Sound Sensor
As a kid I was fascinated by a toy music car which gets triggered when you clap your hands, and then as I grew up I wondered if we can use the same to toggle lights and fans in our home. It would be cool to just turn on my Fans and lights by just clapping hands instead of walking my lazy self to the switch board. But often times it would malfunction as this circuit will respond to any loud noise in the environment, like a loud radio or for my neighbor’s lawn mower. Although building a clap switch is also a fun project to do.

Check out the full project here:

How to install Node-RED on Raspberry Pi to Control an LED: