Playing Melodies using Arduino Tone() Function

Arduino is an excellent way to simplify and speed up your microcontroller projects, thanks to its community of developers who have made almost everything look simple. There are lots of Arduino Projects out here for you to try and have fun. Some of your projects might need some sounds action to notify about something or just to impress the viewers. What if I told you that almost any theme songs that cou ...

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Testing DRAM Using an Arduino

A couple of weekends ago I was in the mood to do some retrogaming and didn’t know what I wanted to play so I asked for some suggestions from Twitter. I played some Castle Wolfenstein, Snake Byte, BC’s Quest for Tires, and Miner 2049er on the Apple IIe and then I wanted to try some games on my Apple IIgs. Unfortunately my IIgs has had intermittent issues for a long time, and it was looking like bad RAM might ...

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Arduino Data Logger (Log Temperature, Humidity, Time on SD Card and Computer)

As Engineers/Developers we always rely upon the data collected to design or improve a system. Recording data and analyzing them is a common practice in most of the industries, here we are building Arduino Data Logger Project where we will learn how we can log data at a specific interval of time. We will use an Arduino board to read some data (here temperature, humidity, date and time) and save them on a SD ...

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Li-Fi – 200 Gbps via your room light

Li-Fi (/ˈlaɪfaɪ/; short for light fidelity) is a technology for wireless communication between devices using light to transmit data. In its present state only LED lamps can be used for the transmission of visible light.[1] The term was first introduced by Harald Haas during a 2011 TEDGlobal talk in Edinburgh.[2] In technical terms, Li-Fi is a visible light communications system that is capable of transmitti ...

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Generating Tones by Tapping Fingers using Arduino

In this project we are going to build a piece of entertainment using Arduino. We all have that habit of tapping Table or Pen for creating any random music. Of course it might not be considered as a good mannerism, but we all enjoy doing it at least once. Hence I thought of taking it to the next level by using Arduino’s ability to play tones. Once you build this project you would be able to Generate tones by ...

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nRF24L01+ 2.4 GHz wireless connectivity with the TinyK20 board

I’m using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol in a low power way (see “IoT: FreeRTOS Down to the Micro Amps“). I have that transceiver now running with the tinyK20 board too: The normal 2×3 ...

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Smart Knock Detecting Door Lock using Arduino

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems. There are many types of security systems available to secure our place. Some examples are PIR based Security System, RFID based Security System, Digital Lock System, bio-matrix systems, Electronics Code lock. In this post, let us build a Secret Knock Detecting Door Lock using Arduin ...

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How to measure mass of the Earth using Arduino

One fine day, I was weighing my self on a weighing scale. Suddenly a thought came to my mind, 'How much would be the mass of Earth?'. Leave that apart 'How can we even measure it?'. There is no such weighing scale on which, Earth can be placed. There has to be some indirect way to measure mass of the Earth. Here I present implementation of one such indirect method to measure mass of the Earth. Step 1: The I ...

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Fingerprint Based Biometric Voting Machine using Arduino

We all are quite familiar with Electronic Voting Machines, where your vote gets registered electronically and you don’t need to use ballot paper to vote in election. Today security is a major concern and it also needs to be ensured that someone can’t vote twice, so this problem can be solved by introducing Finger Print Based Voting, where a person can be authorized based on his finger Print. This will also ...

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iBlinds – Make Your Existing Blinds Intelligent

The Z-Wave Alliance, an open consortium of leading global companies deploying Z-Wave, was proud to announce iBlinds as the October 2015 winner of its global IoT developer competition. The Problem If you live in a house, or even a multi-room apartment, you know how annoying it is trying to control the blinds on every window. You wake up in a dark room and have to use an artificial light before letting the su ...

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Arduino based Angry Bird Game Controller using Flex Sensor and Potentiometer

It’s all started with a small game from the dark ages called “Mario”, right from the time of being a tiny little guy jumping on ducks to save my princess till being a masculine handsome Prince roaming in Persia (Prince of Persia) fighting against darkness to save my world behind I have been a great fan of playing video games and I grew up playing them. But they do get bored up sometimes and I feel less invo ...

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PULPino – An open-source microcontroller system based on RISC-V

Finally, PULP, goes multicore!  We are happy to launch our flagship RISC-V-based parallel-ultra low power open source system. Simply put, OPENPULP,  today’s new kid in town, is the most advanced open-source release we have done so far, and a quantum leap ahead in terms of performance, efficiency and completeness. OPENPULP is an MCU on steroids: an ultra-low power “host” core coupled with a powerful compute ...

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