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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Arduino Based 3-Way Traffic Light Controller

We all know about Arduino. It is one of the most popular open source micro controller board which is highly useful for doing DIY projects. This Arduino based 3-Way Traffic Light Controller is a simple Arduino DIY project which is useful to understand the working of traffic lights which we see around us. We have covered a more simpler version of traffic lights in this traffic light circuit.  Here h ...

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Time-based One-time Password fob for Google Authenticator

Creating an OTP fob compatible with Google Authenticator using an Espruino Pico Now that the Espruino Pico has (beta) HID support, it can pretend to be a keyboard or mouse (or other HID compatible device). This makes it possible to send characters to the active window on your Windows/Linux/Mac PC. I've cobbled together some code which turns the Pico into a device like a YubiKey. Press the button and get the ...

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Fingerprint Based Biometric Attendance System using Arduino

Attendance systems are commonly used systems to mark the presence in offices and schools. From  manually marking the attendance in attendance registers to using high-tech applications and biometric systems, these systems have improved significantly. In our previous projects, we have covered few other electronic attendance system projects using RFID and AVR microcontroller, 8051 and raspberry Pi. In this pro ...

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The incredible story behind the Gerber PCB file format

I've been in the electronics and computing industries ever since I graduated with my BSc from Sheffield Hallam University in the UK back in 1980. Since that time, I've designed all sorts of weird and wonderful things (some of which even worked), including my fair share of printed circuit boards (PCBs). I've also been associated with the Electronic Design Automation (EDA) industry since long before the name ...

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Arduino Motion Detector using PIR Sensor

Detecting motions or movements has always been important in most projects. With the help of the PIR Sensor it has become very easy to detect human/animal movements. In this project we will learn how we can interface a PIR Sensor with a microcontroller like Arduino. We will interface an Arduino with PIR module and blink a LED and beep a Buzzer whenever a movement is detected. The following components will be ...

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SK6812 – a new intelligent RGB LED

During the last months, a new WS2812 alternative appeared on the market: The SK6812. I finally managed to get my hands on some of them to take a closer look. In most aspects these devices are basically clones of the WS2812. What is interesting however, is that the manufacturer came up with a couple of new variations of the stock 5050 RGB LED. As with many components from mainland china, it seems very diffic ...

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