The oximeter is a tool that allows you to calculate the percentage of oxygen saturation in the blood based on the amount of light absorbed. It consists of a photodiode and two LEDs: a red LED and...

Have you ever wondered why smartphones are called smartphones? Because they are smart, right? They do some jobs automatically, intelligently. This is the short answer. For example, mobile phones have an automatic brightness control system, which is...

The idea for this project came to its creator when he began researching the principle behind commercially available pet dispensers; these all work the same and the difference in monetary terms depends on the controller used. An...

  We develop and test applications with the Pro midi 1284P board.   Recently we have introduced and described a new prototyping board called PRO midi 1284, based on an ATmega 1284P microcontroller; after this presentation, made...

This project was inspired by the vision of a real boat equipped with various sensors capable of measuring the depth of the seabed; we therefore thought of building an autonomous small-scale boat to perform the same tasks....

  It is halfway between an Arduino Mini (in size) and an Arduino Mega in terms of computational capacity, available memory and integrated peripherals. Since the creation of the Arduino project and the subsequent spread of the...

  Lots of components to make applications that can be programmed with Arduino and assembled like LEGO bricks.   How many times did you dream of building something with LEGO bricks when you were a child and...

  Let’s interface our Energy Meter with Internet to bring measurements to the ThingSpeak platform and see the results in convenient graphs.   A few posts ago, we introduced the MCP39F511 integrated circuit, capable of performing electrical...

  It monitors electricity consumption and sends the detected data to the cloud through the GSM cellular network; it is based on an Arduino Mega equipped with GSM Shield and an absorption detector board. First instalment.  ...

  With Arduino Mega, we create, a keyboard with RFID module, a configurable access control system, to manage electric locks.   In the market there are different types of controls for electric locks: from the simple insertion...

https://youtu.be/KVFvDvqkmQU I created a device using liquid lenses allowing for the glasses to change its prescription. Because of this ability, these glasses can determine an individual’s prescription and change to correct vision for different prescriptions. This device...

The project was born with the purpose of helping the deaf community to communicate and interact easily with the surrounding environment. The goal is to convert the basic symbols representing the 26 letters of English alphabet and...

Can we “listen” a difference between pouring hot and cold water? As you see in the video you can do it, but why? It is mentioned that the change is due to complex fluid dynamics reasons. Beyond...

The seismometer is a device for detecting earthquakes and measuring their strength. Generally these are very accurate tools and are relatively difficult to build at home. Commercially available sensors are often expensive, and inexpensive shock-sensitive electronic modules...

  A Solar tracker was created in order to focus solar panels perpendicular to incoming sunlight. This position of the solar panel is optimal for photovoltaic energy generation. The efficiency of the Solar Tracking system vs normal...

In this project we see how to make a Bluetooth speaker with a clock. It displays date, time, temperature and humidity and it is updated from Internet at 15 minute intervals. It also has a 32-band audio...

  The purpose of this project is to automatically open the door by detecting body temperature. In fact, this project is to prevent patients with new coronary pneumonia from entering their homes. To a certain extent, guarantee...