Arduino Based Digital Clock with Alarm

This Arduino based Real time clock is a digital clock to display real time using a RTC IC DS1307 which works on I2C protocol. Real time clock means it runs even after power failure. When power is reconnected, it displays the real time irespective to the time and duration it was in off state. In this project we have used a 16x2 LCD module to display the time in - (hour, minute, seconds, date, month and year) ...

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Make Arduino Based Home Automation Part-2 (wireless) Using ARDUINO UNO R3

Hello welcome back . This is second part of the wireless home automation . In previous part we have connected home applience with relay and controlled with arduino . In this part we are going to add wireless feature of that device . One arduino is acts as remote controller ie transmitter which transmit input signal from buttons and another arduino receives those signal and switch on home appiliences accordi ...

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Easy Arduino Menus for Rotary Encoders

Rotary encoders with centre-push buttons are cool input hardware for projects, especially if you want to be able to scroll through menus and select options. Hopefully this Instructable will give you the confidence to try a basic menu system out and combine it with a rotary encoder to give a professional feel to your next project! Why menus and rotary encoders need code I wanted to have a menu in an upcoming ...

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Smart Phone Controlled Digital Code Lock using Arduino

There are many types of security systems used all over the world and Digital Code Lock is one of them. We have already covered many digital locks with simple 16x2 LCD using Arduino, Raspberry Pi, 8051 etc. Here we are going to build a Smart Phone Controlled Digital Lock using TFT LCD and Arduino Mega. This lock can be controlled wirelessly via Bluetooth, using your Android phone, within the range of normal ...

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AUTOMATIC DOOR OPEN SYSTEM WITH VISITOR COUNTER PART-1 Using ARDUINO UNO R3

Hello every body welcome back . In today's arduino blog I am going to show you how you can make a automatic door opening system when some one wants to enter your room the PIR motion sensor detects the motion of moving body and sends signal to arduino and motor just move in anticlockwise direction to open the door and after man enter the room the door will automatically closed  . This concept is used to open ...

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Polyphonic Synth Cable

This is the fourth synthesizer cable I've built, the first three being based on the ATtiny85. I have been looking into ARM chips but haven't gotten to grips with them just yet. Instead, I decided go back to the ATtiny2313, which has a quarter of the memories of the tiny85, but a hardware UART port and more pins. It's quite a simple idea really - generate square waves by toggling the digital outputs on many ...

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Create a Private Chat Room using Arduino, nRF24L01 and Processing

Creating a Local Network to share personnel and confidential data's has become almost impossible for a common man in our modern world. This is mainly because all common chat methods like Whatsapp, Facebook, Hangout and almost everything involves an internet connection. What if, we could share data without the medium of Internet? How cool it would be if you could communicate with people inside your home or w ...

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Automatic Door Open System With Vistor Counter Part-2 Using ARDUINO UNO R3

Hello welcome back . In previous part  we have made a visitor detector by using PIR sensor . This application can be used on night because PIR sensor gives output based on thermal object movement . In this tutorial we are going to extend that project with  visitor counter part . First of all i want to apologize that I am unable to  add seven segment without adding extra IC  as promished, it’s because we are ...

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Elektor 500ppm LCR meter case tips

I recently bought a 500ppm LCR meter from Elektor because I didn't have anything for measuring inductors or the ESR (equivalent series resistance) of capacitors, both of which are important for modern electronics, particularly switch mode regulators that have become ubiquitous. It is also more accurate than any of my multimeters and has wider measurement ranges. For example it can measure resistance from 0. ...

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Smart Phone Controlled FM Radio using Arduino and Processing

In this project we will use an existing FM radio which went repair a long time ago, to convert it into a Smart Wireless FM Radio controlled using Phone, with the help of Arduino and Processing. We can convert any manually operated electronic device into a Smart Device using the same procedure.  Every electronic device operates with the help of signals. These signals might be in terms of voltages or currents ...

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WATER LEVEL MEASUREMENT USING ARDUINO UNO R3 AND WATER SENSORS

Hello , Welcome back , In this tutorial we are going to show you how to make a water level indicator using arduino uno and some water sensors . There are so many tutorial on water level sensors on internet , but this method is some thing different than other . First of all let us discuss about component we need to make water level indicator and controller. Component required to make water level indicator . ...

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Measure small LCs with a scope

One of our technicians recently asked for help determining the value of an SMT inductor. It was unmarked, and was many turns of very fine wire on a ferrite core. The resistance measured 26Ω, which for some reason gave our ancient LCR bridge a conniption, and read 30mH along with a blinking error message. The tech rightfully felt that such a small inductor could not possibly be 30mH. I didn't have another br ...

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