How to make a datalogger with the ESP32 NodeMCU connected to a Django cloud on Raspberry

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Introduction In this article we will see how to use a Raspberry and REST APIs to receive and display, via a Django application, data detected by an ESP32 NodeMCU. We have already seen in previous articles (Thermo-hygrometer with clock and LCD display on Arduino UNO, How to make a data logger with the ESP8266 NodeMCU […]

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How to make a data logger with the ESP8266 NodeMCU connected to the Arduino Cloud

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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

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How to build a simple Telegram controlled video surveillance system with ESP32 on PlatformIO

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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

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How to create a simple video surveillance system with ESP32 on PlatformIO

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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

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How to control an inverting operational amplifier using Arduino UNO and a digital potentiometer

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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,

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How to use the EEPROM memory on the NodeMCU ESP8266

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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

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How to make an automatic sprinkler controlled by Telegram with the ESP8266 NodeMCU

Leave a Comment / NodeMCU, Datalogger, esp8266, PlatformIO /

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

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How to create a project for NodeMCU ESP8266 with PlatformIO

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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

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How to make a bluetooth datalogger for temperature and humidity using Arduino MEGA.

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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.

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