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Here we come with the topic Interfacing Ultrasonic Sensor HC-SR04 with Arduino Uno R3. After getting the interfacing successfully lots of projects window will be open for us. In my earlier post we saw that how to interface LM35 an*log temperature sensor with Arduino at “Arduino based digital thermometer”. So to know the Interfacing Ultrasonic… Read More » Here we see arduino based digital thermometer. So we are in very first step forward toward an*logue sensor interfacing with arduino. Thermometer basically is a temperature measuring instrument. By using this project “arduino based digital thermometer”, we can measure the atmospheric temperature. This atmospheric temperature may use as an input of lots of advanced projects.… Read More » We come with a new and very useful project tutorial of smartphone controlled LED using arduino uno. It is somewhat we called first step of wireless communication. Smartphone controlled LED using arduino uno is an application of Bluetooth interfacing with arduino uno board. Before start the project I request if you have any doubt on… Read More » Interfacing HC-05 bluetooth module with arduino uno is a best way to serial communication with other Bluetooth unit. We know any data can be transmitted by serial communication through HC-05 bluetooth module. For that we have to connect HC-05 bluetooth module with arduino uno board via UART port. So before entering the project discussion if… Read More » Here I come with the new and very important topic that is arduino serial communication. So before go farther we should know something about what is serial communication? We know the term communication refer to the information shearing between two devices. It can be done by two method. Parallel communication:    Data or information send parallel… Read More ». MIT APP INVENTOR REGISTRATION AND LOGIN SYSTEM IN ANDROID APP USING PHP AND MYSQL. login system in android app using PHP and MySql. In my early post I discussed on the registration system at “Store data to mysql server