Introduction Arduino Cloud is a web platform that serves to connect with devices such as Arduino, NodeMCU and so on in order to collect the data sent by them and display it on a dashboard. It also allows you to control these devices by specific commands on the dashboard. It also has the possibility of […]
How to make a data logger with the ESP8266 NodeMCU connected to the Arduino Cloud Read More »
Introduction We have already seen how to make a simple video surveillance system with the Freenove ESP32-WROVER CAM Board with camera in the article How to create a simple video surveillance system with ESP32 on PlatformIO. In that project the board sends us the images, through an embedded web server, to a certain URL that
Introduction Nowadays we all have to deal with video surveillance systems: on the streets, in shops, at home (to control unwanted access by any bad guys or perhaps to secretly observe the behavior of our pets in our absence). Today’s technology helps us as it provides us with increasingly miniaturized and cheap boards, cameras and
How to create a simple video surveillance system with ESP32 on PlatformIO Read More »
What is an operational amplifier? The operational amplifier (also called opamp) is a solid-state analog electronic component capable, as its name suggests, of amplifying an electrical signal. It is defined as operational because it is able to perform some mathematical operations in a totally analogical way on electrical signals. The generally possible operations are addition,
What is the the EEPROM memory The EEPROM memory (acronym for Electrically Erasable Programmable Read-Only Memory) is a type of memory present in many electronic devices (including our beloved devices such as Arduino or NodeMCU ESP8266 / ESP32 etc) used to store small amounts of data in a ” almost” permanent way. In practice, the
How to use the EEPROM memory on the NodeMCU ESP8266 Read More »
Today, information technology and electronics pervade almost every aspect of our lives. There are automatic electronic systems that have many different functions, sometimes they are a little invasive but they are often very useful and help us in our daily activities. One of the fields where certain devices are extremely suitable is gardening, in particular
How to make an automatic sprinkler controlled by Telegram with the ESP8266 NodeMCU Read More »
Creating the project using PlatformIO Today we want to see how to create a new project for the NodeMCU ESP8266 board using the PlatformIO IDE and how to add external libraries to the project. Please note that the operating system I use is a Linux distribution (specifically Fedora 36). So the folder structure in the
How to create a project for NodeMCU ESP8266 with PlatformIO Read More »
Introduction What is a digital potentiometer? We’ve all used a classic potentiometer at least once in our lives: it’s the classic volume knob on our radio! We may not even notice it when instead we are dealing with a digital potentiometer. When on the radio, to vary the volume of the music, we don’t use
How to control a digital potentiometer using Arduino UNO Read More »
What is a data logger for? A data logger is an electronic device which acquires physical parameters (for example temperature, humidity, atmospheric pressure, pollutants, etc.) in precise time intervals and saves them on a permanent memory device (such as an SD card) or transmits them to a cloud platform to be processed and displayed.
How to make a bluetooth datalogger for temperature and humidity using Arduino MEGA. Read More »
What is the thermo-hygrometer used for? A thermo-hygrometer is a device that measures ambient temperature and humidity. These two parameters are measured by a special sensor at regular time intervals. They can then simply be viewed on a display or stored on an SD card (in order to have a history) or even sent to
Thermo-hygrometer with clock and LCD display on Arduino UNO Read More »