Who has never left their phone in one place and realized too late that they have lost it? In this project we will look for a solution to the problem; whenever you are too far away from your phone, “Don’t Lose Me” will blink and whistle, as well as your phone will play an annoying…
A very cool project you can do with an Arduino is to use it as a custom controller for your favorite games. Whether you’re adapting a Nerf gun or playing an FPS game, using an Arduino makes it quick and easy to build your own custom controller. In this tutorial, we will see how…
Have you ever wished to have an extra pair of hands in the lab to handle the camera while you are focused on your project? In this article we will build an automated assistant camera, which can automatically move to specific positions chosen previously or, alternatively, pan continuously from the top of the workbench. The…
In this project we will see how to use Home Assistant software to create an intrusion alarm system for your home. The system will basically detect if the door is opened without authorization and then send a notification to your smartphone. We will use a magnet with a reed switch to determine if the door…
We pick up the fascinating Nixie tubes through displays based on packages of laser-engraved plexiglass plates, illuminated by Neopixel LEDs. For those born in the era of solid-state displays, be they LED, 7-segment, dot-matrix, or even liquid crystal, it is difficult to imagine how text and numbers were displayed before their advent; Well, those who…
Most bench drills have a ruler to read the drilling depth. The greater the accuracy at which the desired position can be read, the greater the success of the job. In this project we see an alternative proposal: a display in which we see the drilling depth thanks to a gyroscopic sensor and an 8-digit…
In this project we will see how to create an Arduino-based smart lock that can be unlocked from your mobile phone; we will therefore see how to generate a specific QR code, how to create an access page from ESP8266 and finally you will be able to open the door using your phone. We…
In this project we will see how to build a programmable countdown timer in the range of 1s – 9999s which can be used in domestic or industrial applications as well as by beginners to learn how to assemble an electronic module and load a program. During the selected time interval, the system can power…
In this project we see how to build a device that detects maturation stages based on color with a neural network model. As fruits and vegetables ripen, they change color due to the four families of pigments: chlorophyll (green), carotenoids (yellow, red, orange), flavonoids (red, blue, purple), betalain (red, yellow, purple). These pigments are groups…
If you have a circular saw you probably use a tape measure every time you want to cut a piece of wood and make pencil marks after you find the desired length. In this project we will see how to simplify the process by creating a device that accurately measures cuts every time. You won’t…
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 an infrared LED. To make the measurements, the fingertip is placed between the photodiode and the LEDs as…
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. This could be equipped with the necessary sensors and programmed to guide you along a desired path and…
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