IoT Notice Board using Raspberry Pi

As the usage of Internet of Things increasing day by day and a wide range of IoT based products coming into market, we are also experimenting with some of our popular DIY projects by enabling them with IoT technology. If you have seen this Arduino notice board, where you can change the notice on notice board by simply sending a message from your cell phone. So this time we are making this project with Raspberry Pi and connecting with the internet. 

Here you can simply change the notice through the web interface. Check out this complete project with DIY instructions and required files.

Arduino LED VU Meter on PCB

VU Meter or Volume Meter is very interesting project for music lovers. It is kind of an Equalizer, which is present in the Music systems where we can see the dancing of LEDs according to the music, if music is loud then equalizer go to its peak and more LEDs will glow, and if music is low then lesser number of LEDs shall glow. Volume Meter (VU) is an indicator or representation of the intensity of sound level over LEDs and can also serve as a volume measurement device.



Although we can also create a simple VU meter circuit without using any microcontroller but to enhance it and work in a more beautiful way, we have designed it as an Arduino shield. Here you can find the complete DIY tutorial and a step by step guide to design the PCB layout for this VU meter.

Check it out here.


Watch the VU meter working in this video.

DIY Arduino Smoke Detector

In this DIY project, a Smoke Detector Circuit is designed to sense the smoke in the air and display the same on 16x2 LCD. This circuit triggers the Buzzer when Smoke level becomes higher than 1000 ppm, the threshold value which can be modified in the code. This circuit mainly uses MQ2 Smoke/Gas sensor and Arduino to sense and calculate the level of smoke in air. 

Find the complete DIY on CircuitDigest.com

Call/Text using SIM900 GSM Module and Arduino

Isn't it to fascinating to create your own cell phone? If you know about working with arduino, its not much difficult, and you can develop interesting arduino projects.  Not that perfect one, but in this DIY project we are going to create basic functionality of a cell phone like making a call/receiving call, sending and receiving text messages. If you are new to GSM module, you can go through this article to understand more about GSM module.

Go through this tutorial to learn about creating basic functionalities of a cell phone by interfacing SIM900 GSM with Arduino.

Private Chat Room using Arduino, nRF24L01 and Processing

How cool it would be if you could communicate with people inside your home or work place without a net pack or Internet Connection?

What if we could customize our chat-screen with our own imaginations?

All this is possible with a microcontroller and a Wireless transmission medium. This Arduino Chat Room using nRF24L01 Project will guide you on setting up a low cost Chat Room in your local area.

Arduino IR Remote Control

I started this project in order to get rid of various remotes at my home and build something single which could incorporate features of all of them. I got this idea when I saw one of my friend’s mobile phone with built in IR blaster, at that time I decided not to buy a similar phone rather make my own device which should be compatible with my existing handset. So here we are going to Convert an Android Phone into an IR Remote using Arduino to control various devices at home.

Find here the complete project: Arduino IR Remote Control

Arduino LED Scroll Bar

In this post we are covering a detailed DIY project to build an Arduino based LED scroll bar, as shown in the below picture.

This is quite simple project and only requires Arduino nano and few LED stips, along with some other basic electronic components.

So go through the link below to find the circuit diagram, PCB files and a detailed guide to build this beautiful LED scroll bar.