There are numerous ESP8266 modules available, and they are often used in battery-powered IoT applications that, with the correct configuration, can run for months. In this guide, you will learn how to power an ESP8266 using lithium-ion batteries and how to configure it correctly. You will also be able to simulate battery life…
In some of the ESP32 projects featured in the magazine Elettronica In, a Telegram bot is used to receive alarm notifications, event alerts, and even control the module’s outputs. In these detailed videos, Dario Ciceri (the tutor for the ESP32 course) explains how to configure a Telegram bot using the Arduino IDE. If you’re interested…
A load cell is a sensor designed to measure the weight of an object. Essentially, it is an aluminum bar containing 4 resistive strain gauges that are measured through a Wheatstone bridge to detect the weight of the object. In this project, using a small Microchip ATtiny1614 and a 5kg load cell, a 3D-printed scale…
What to do when the chosen microcontroller doesn’t have enough pins? We will find out in this tutorial, where we will learn how to use shift registers to control LEDs and read buttons with just three wires! In six steps, we will use the CD4094 and CD4021 with a PIC microcontroller.
Connect our ESP32 Demoboard to Arduino IoT Cloud to remotely monitor and control sensors via a web dashboard. In this free webinar, Fabrizio Mirabito (IoT Cloud Manager at Arduino) will demonstrate how to connect the ESP32 to the cloud, enabling remote monitoring and control of sensors and actuators through a web dashboard. For this purpose,…
The ESP32-CAM Development Board is an electronic board based on an ESP32S SoC (System On Chip), equipped with a 2MPixel camera (OV2640) and a slot for a Micro SD memory card up to 4GB. The board features a high-brightness LED that can be used as a flash or scene illuminator, as well as several GPIO…
In Italy, during this pandemic period, Decrees of the President of the Council of Ministers (DPCM) are very frequent and the restrictions vary from region to region. Each region will have a color assigned under these restrictions and the variations of each decree will make the various colors impossible to remember. Colors of Italy is…
Have you ever wanted to know the temperature of your home anywhere in the world? Do you want to add a function to your weather station or monitor the air in your workshop? Let’s take a look at this project! The system consists of a sensor module that measures various environmental variables, which sends its…
Do you know what a “Wordclock” is? A Wordclock is a clock that displays the time by lighting up certain letters, contained in a matrix, in order to write the words corresponding to the current time. In this project we will see an alternative Wordclock using 3D printed letters, which will move through a magnetic…
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…
This project allows you to create a frequency counter with excellent precision and low consumption thanks to the use of a 32768Hz quartz. The project is based on a BluePill with STM32 microcontroller. The latter receives a 10MHz clock which is multiplied to 70MHz by the internal circuit of the microcontroller and uses a 32768Hz…
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…
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