Arduino Voltmeter Prototype

In this instructable, I'll show you how to make a simple arduino voltmeter. It can measure voltages in excess of 30VDC depending on how you configure it. The smaller the voltage range you want to measure, the more accurate that your meter will be. This project is going to be apart of a gauss meter that I am making to measure magnetic fields strength as well as magnetic field polarity. This instructable shou ...

Read more

Measure Sound/Noise Level in dB with Microphone and Arduino

Noise pollution has really started to gain importance due to high population density. A normal human ear could hear sound levels from 0dB to 140dB in which sound levels from 120dB to 140dB are considered to be noise. Loudness or sound levels are commonly measured in decibel(dB), we have some instruments which could measure the sound signals in dB but these meters are slightly expensive and sadly we do not h ...

Read more

Fobble – A general purpose Wireless Breakout Board!

This week I have been working on another of my standard footprint 50mm x 50mm boards - it is a general purpose wireless module carrier board:-  Fobble.  That's a BLE Fob - for anyone who misses the pun. In the last few weeks there have been a number of applications arise - that could easily be addressed with an easy to use, generic wireless platform. These have included keyfob or pendant applications - requ ...

Read more

Arduino Metal Detector

Metal Detector is a security device which is used for detecting metals which can be harmful, at various places like Airports, shopping malls, cinemas etc. Previously we have made a very simple Metal detector without a microcontroller, now we are building the Metal Detector using Arduino. In this project, we are going to use a coil and capacitor which will be responsible for the detection of metals. Here we ...

Read more

ArdLock – Arduino Door Lock

This a door lock built as fun project.It is quite easy to build and a fun way to learn and improve your knowledge of arduino.I tried to add a 16*2 display but there werent enough GPIO pins on arduino Uno.If You are interested in adding a display you would need an arduino Mega. Items Needed Arduino UNO Jumper wires Servo(or anyother component to open a door lock like a linear actuauator) Keypad(I used a 4*3 ...

Read more

Smart Blind Stick using Arduino

Ever heard of Hugh Herr? He is a famous American rock climber who has shattered the limitations of his disabilities; he is a strong believer that technology could help disabled persons to live a normal life. In one of his TED talk Herr said “Humans are not disabled. A person can never be broken. Our built environment, our technologies, is broken and disabled. We the people need not accept our limitations, b ...

Read more

Arduino Calculator using 4×4 Keypad

Programming is always fun and Arduino is a wonderful platform if you are just getting started with Embedded programming. In this tutorial we will build our own calculator with Arduino. The values can be sent in through a keypad (4×4 keypad) and result can be viewed on a LCD screen (16×2 Dot-matrix). This calculator could perform simple operations like Addition, Subtraction, Multiplication and Division with ...

Read more

Build Your FM Transmission Station With Arduino

Hi every body . Before  A  3 months Ago , one of my friend ask me to build  a Simple FM transmitter , he Would to transmit An Audio File from computer and PLAY it on any radio channel , By adjust the frequency of receiver  as same as transmitter  frequency I searched on the internet on for this circuit , But I don't find my target . There  were some circuits with many component , or with miss component , so ...

Read more

Reverse engineering the silicon in the ARM1 processor

How can you count bits in hardware? In this article, I reverse-engineer the circuit used by the ARM1 processor to count the number of set bits in a 16-bit field, showing how individual transistors form multiplexers, which are combined into adders, and finally form the bit counter. The ARM1 is the ancestor of the processor in most cell phones, so you may have a descendent of this circuit in your pocket. ARM ...

Read more

Measuring PPM from MQ Gas Sensors using Arduino (MQ-137 Ammonia)

Right from the time of industrial age, we mankind have been rapidly developing. With every progress we also pollute our environment and eventually degrading it. Now global warming is an alarming threat and even the air that we breathe are getting critical. So air quality monitoring has also started to gain importance. So in this article we will learn how to use any MQ series gas sensor with Arduino and show ...

Read more

Guide to ESP8266 and Tweeting Using ESP8266

I learnt about Arduino 2 years ago.So I started playing around with simple stuff like LEDs,buttons,motors etc.Then I thought wouldn't it be cool to connect to do stuff like displaying the day's weather,stock prices ,train timings on an LCD display.I found that this could be done by sending and receiving data through the internet.So the solution was connecting to intenet. There began my search on how to conn ...

Read more

Geiger Backpack with Intel Edison

We are a group of makers who like to spend nights and weekends tinkering with tecnology here at Verona FabLab (Verona is a town in the North of Italy) and with this instructable we want to describe the project we've realized for Intel Maker contest. Our project is a portable device powered by an Intel Edison and equipped with a GPS receiver and a Geiger Tube, a sensor able to detect radioactivity. Our devic ...

Read more
Scroll to top