Arduino

In the previous tutorial, we discussed manipulating data values in lists and byte arrays. Python also has mutable unordered collections like sets and dictionaries. Let us see how data values/objects in sets and dictionaries can be manipulated. Sets Sets are unordered mutable collections of items. The items in a set can be any arbitrary immutable…

​In this tutorial i am going to make an arduino home security system. One can install this diy arduino security system project on his home main door. The diy arduino security system checks two things. First it checks if some one approached the door? Second it checks if door is opened by the person? When the…

Fading or controlling led brightness using arduino uno and potentiometer/variable resistor is not a very hard task. Arduino predefined libraries made it very easy to fade led with arduino uno. Whats going behind the arduino code predefined commands/instructions at software and at hardware level is important to understand. Students normally start with the pre-written arduino…

Here is a simple project/tutorial in which i will teach you about how to display ASCII characters on character lcd’s. In this tutorial i am using 16×2 lcd. You can use any other size of lcd if you want but be sure to change the lcd initialization statements in the code. Character lcd’s have a…

Blinking an led is basic getting started program/project through which every newbie has to go through upon entering the field of microcontrollers(arduino, pic stm32 etc). After blinking led newly entrants try to explore more features of the particular microcontroller by making some diy(do it your self) projects. Led dimmer or intensity/brightness control of led using ldr(light dependent…

In this tutorial i am going to measure DC current using Acs712 Hall Effect-Based Linear Current Sensor and arduino uno. Acs712 can measure current precisely and accurately if properly managed. I have gone through various blogs on internet about interfacing acs712 current sensor with arduino and other microcontrollers. I found that all of them are measuring…

This project is by a final year student of university of liverpool. The project is prototype of a bistatic radar system. Prototype is made using arduino uno and ultrasonic transmitter and receiver. To rotate the ultrasonic transmitter and receiver servo motors are used. Ultrasonic receiver and transmitter are mounted on the top of the servo…

A simple diy project on how to monitor car battery, engine temperature and automatically control the headlights of car with arduino uno. I have pretty old vehicle, which does not have any fancy items/mechanics in it. So i decided to make this project and make my car look a little bit fancy by my self.…

In the previous tutorial i discussed how to interface water sensor with arduino? What are arduino water sensor limitations? How to write effective and efficient code for arduino water detector which limits minute calculation errors? At last steps involved in converting analog water reading by arduino in to its equivalent digital form is highlighted. In…

In this project i will discuss about how to use Max485 for serial communication between two arduino boards. How to effectively configure RS485 in receive and transmit mode. What are advantages of using RS485 protocol for serial communication and finally i will present a working model of RS485 serial communication between arduino Mega and Arduino Pro Mini. Rs485…

In this tutorial i am going to teach you about how to use arduino flow meter to measure the amount of water passing through the water valve. Flow meter is actually a valve. One can control the valve manually and digitally in order to limit the flow of water through the pipe. Normally manual water…

This tutorial is about interfacing SD-card with arduino. First i will explain what is SD-Card? Where it can be used? SD-Card applications? Then i will move on to the pin out of SD-card. The protocol used by SD-Card to communicate with external modules(microcontrollers etc). Finally i will present a simple DIY electronics project on how…

In this tutorial i am going to teach you how we can measure the visible light intensity using arduino and sparkfun Luminosity Sensor Tsl2561. Light intensity value will be displayed on 16×2 lcd interfaced with arduino uno. Visible light intensity is also know as lux. Typically lux is a measure of how bright any illumination will…

​This is a simple tutorial on how to control speed and direction of stepper motor using arduino uno and bluetooth module hc-06 through an android phone app. The motor which i am using is Uni directional stepper motor. Their are two types of stepper motors unidirectional and bidirectional. Uni directional has four phases and bidirectional…

This project is about displaying custom characters on 16×2 character lcd using arduino uno microcontroller. With ardunio uno its very easy to display custom characters on lcd. In arduino their is built in structure to generate custom character like many other features which make it perfect board for embedded system projects or diy(do it yourself) projects etc. …

This electronics and avionics engineering project by a final year student at university of liverpool is about identifying the objects/threats in visible range by utilizing the ultrasound sensors. The ultrasound transmitter and receiver sensors are arranged in a pattern to form a bistatic radar field. In this bistatic field any physical object of any shape…

This is a simple project/tutorial on how to send sms/text message using sim900d gsm module with arduino uno. Project code is written in arduino ide. The code is compatible to all arduino boards. Post covers how to interface sim900 gsm module with arduino uno and efficiently send sms/text message to a desired cell phone number. Sim900d…

In this post i am going to explain how to program the Atmega162 controller using Arduino IDE. Since their is no support for Atmega162 officially in arduino IDE, So for making atmega162 compatible with arduino ide we need to define some files to make it visible to  the arduino ide. Luckily some work is already done…

Recently we started a project to interface real time clock(RTC) DS3231 with atmega32 microcontroller. First we wrote program in atmel studio ide, our logic worked and hardware was responding as desired. Then we need some other sensors to be interfaced with the same system. So we decided to move from atmel studio to arduino ide…

Here is one more and complex project made using arduino uno. Project is about how to make and interface an alphanumeric keypad with arduino uno or we shall call it how to program 4×3 keypad to function like alphanumeric keypad with arduino uno. The project is complex in the scenario that its code is complex and it…