Coral bleaching is one of the effects of global warming. The corals, once blooming with colours, are becoming pale, and reduced to white bones. The art pieces themselves were 3D printed corals, with LED strips inside it. Artificial lives, rainbows activated by electricity and codes. When you look at the art pieces from far…
We emulate the TDG series remote controls using the GSM Shield. It’s not been long since we presented our GSM shield for GSM/GPRS modules SIMCom, QUECTEL, FIBOCOM etc. that was born to be incorporated in Arduino-based projects involving cellular connectivity; now it’s time to move on to the first practical application, which in this case…
Over the last few months we’ve all been forced to communicate online rather than in person. As a student, most of my lectures turned into Zoom meetings, and the same happened to my tutoring hours. In the next few weeks, many students of all ages will go back to their schools or universities but many…
In this project we will see how to make an anemometer (instrument for measuring wind speed and direction) using an Arduino Uno R3, two VL6180X laser distance modules and a section of tube made of plastic or similar materials. We will also use Processing3 to display wind speed and direction, the latter being independent of…
Motion detector based on the Doppler effect, made by combining a specific sensor with a circuit that amplifies the output signal. Now the devices used in presence and movement detection systems, to be combined with automations for opening doors and turnstiles but also with anti-theft and anti-intrusion systems, stand out passive infrared radars (otherwise called…
Relationships and mathematical patterns are all around us, in our daily life as well as in nature. These patterns can range from simple to complex, from harmonious to chaotic. Regardless of the type of pattern, these geometric figures intrigued us so much that we decided to investigate the underlying mathematics. In the following project we…
It solves the problem of pitch loss that can trouble 3D printers and which, especially in large printers that require many hours to print parts, can mean huge losses of time and money. In previous posts we presented a stepper motor driver, which we named MotorFish, whose special feature is to work in closed loop…
Let’s describe the firmware of the stepper motor feedback controller and test it on the 3D printer. (Read the first post) In the limits of non-retroactive stepper motor control is that in applications for the drive of machines, CNC milling machines or 3D printers, the positioning can be affected by an error that makes it…
Controller with stepper motor feedback able to dynamically check the shaft positioning and prevent possible step losses. Who has never happened to launch a complex and long 3D print, maybe a job of hours or dozens of hours, to be absent and discover that, when the job was almost finished, the printer engines lost a…
The project attempts to recognize different bird calls by continuously listening to audio through the Nano 33 BLE Sense’s built-in microphone. The call of the bird heard will be analyzed and classified; if it is not heard, the audio will be classified as background noise. This project can be useful for people interested in birding…
In this project we see how to build an Arduino-based capacitive kitchen timer that allows users to interact via touch input. The finished device is driven by ATMega328PU (the same microcontroller on which Arduino UNO is based). You will need a few components, but the end result will be a unique gadget that will liven…
This project is not only an intelligent coffee machine with smartphone control but also allows you to graphically view the temperature trend. It can be controlled via Bluetooth or simply fill up with fresh water and the system starts automatically! Developed on Arduino Nano, it uses an ST7920 display, an HC-05 Bluetooth module, a Dallas…
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