Introduction The PID controlled Boost Converter with ESP32, presented in this article, represents an efficient and versatile solution for managing voltage variations in the power supply of e… Read More
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digital frequency meter
pid controlled boost
controlled boost converter
signal generator
digital frequency
signal generator
signal
pid controlled
environmental monitoring
modbus protocol
electronic components
digital electronics
mesh network
generator
communication protocols
signal
digital
electronics
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protocols
Techrm is a blog for the dissemination of electronics and information technology. With its articles it aims to explain in a simple way small projects based on programmable hardware devices (such as, for example, Arduino or NodeMCU), which have their own utility and which can form a basis for creating, by the reader, more complex projects.
Environmental Monitoring With Modbus Protocol, Raspberry Pi And ESP32: Essential Guide With REST API
Introduction This project, focusing on the Modbus protocol, represents a perfect example of how modern technology can be used to create an efficient and scalable environmental monitoring sys… Read More
Introduction Explore key electronic components, from their functions to practical applications, in this guide to analog and digital electronics. Discover how resistors, capacitors, inductors… Read More
Introduction The project we are going to carry out focuses on the creation of a mesh network using ESP32 modules, with the aim of monitoring environmental parameters such as temperature and… Read More
Introduction In this article we will cover file management on ESP32. In computing, file systems are essential for organizing and managing data stored on storage devices. A file system is a s… Read More
Introduction Signal generator with ESP32 and AD9833 DDS module. In our previous project described by article Guide to creating a simple signal generator with ESP32, we built a simple signal… Read More
Introduction ESP32 and communication protocols. The ESP32 is a versatile and powerful microcontroller that has revolutionized the world of the Internet of Things (IoT) thanks to its advanced… Read More
Introduction Signal generator with ESP32. A signal generator is a fundamental instrument in electronics, used to produce waveforms of various frequencies and amplitudes. These devices are cr… Read More
Introduction The digital frequency meter with ESP32 is a simple but very useful tool in every electronics laboratory. In the world of electronics and circuit design, the need to accurately m… Read More
Introduction In the world of electronics, a square wave generator or more generally a signal generator is an essential tool for testing and diagnosing circuits. A device of this kind allows… Read More
Introduzione WiFi panoramic camera: remote control your vision. Have you ever wanted to have complete control of your surveillance camera, being able to rotate the lens to explore every corn… Read More
Introduction The project “Control of an SG90 servomotor with ESP32 and touchscreen display” combines the potential of the ESP32, a versatile and powerful microcontroller, with th… Read More
Introduction Welcome to this hands-on exploration of the world of LCD TFT displays and environmental monitoring with the ESP32. In this article, we will dive into the universe of TFT display… Read More
Introduction Dimmable LED and environmental measurements with Arduino Nano ESP32 connected in the Cloud. After getting the basics in our previous article Independent control of two LEDs with… Read More
Introduction RFID gate access control system: an advanced system for access and permission management supported by the power of the Raspberry Pi. This integrated solution is designed to offe… Read More
Introduction Let’s introduce a new board from Arduino, the Arduino Nano ESP32 , released a few months ago, with this article (which is practically a “getting started” dedic… Read More
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Introduction In the digital age we live in, home security achieved through effective access control has become a priority for many. With the advancement of technologies, it is possible to cr… Read More
Introduction Welcome to the world of IoT, where connectivity and interaction between devices are made possible thanks toMQTT protocol. If you are interested in learning more about this versa… Read More
Introduction Welcome to the world where connectivity and interaction between devices are made possible thanks toMQTT protocol in IoT. If you are interested in learning more about this versat… Read More
Introduction In this article we will create a simple RFID access control.In the increasingly interconnected and security-oriented era, access control becomes crucial to ensuring protected an… Read More
Introduction Welcome to the adventure of creating an ESP8266 Web Data Logger with the DHT22 sensor, enriched by the presence of SPIFFS (SPI Flash File System). This comprehensive guide will… Read More
Introduction Welcome to the ESP8266 data logger project. In this article, we will explore in depth the creation of an advanced data logger driven by an ESP8266. Our mission is to build a dev… Read More
Introduction Welcome to the world of sound customization with the creation of a distortion effect pedal for electric guitar! If you are an electric guitar enthusiast and want to explore new… Read More
Introduction Explore the world of audio by making a low pass op amp filter with adjustable cutoff frequency. Introduce yourself to the exciting world of sound engineering, where total contro… Read More
Introduction Welcome to the world of home security with this article through which you will make a smart gas detector using the Arduino Cloud, together with the MicroWakeupper and the versat… Read More
Introduction In this article, we will explore together how to transform your ESP8266 into an ESP8266 FM radio, i.e. a frequency modulation receiver controlled by an infrared remote control a… Read More
Introduction As part of the continuous monitoring of our health, measuring oxygen saturation and heart rate is certainly an operation of primary importance. In the context of technological e… Read More
Introduction This weather station project with ESP8266 and TFT display is just what you need if you’ve ever wanted to have instant access to the weather forecast for your area without… Read More
Introduction The Internet of Things (IoT) is revolutionizing the way we interact with the world around us. MQTT communication protocol between different devices will be illustrated in this a… Read More
Introduction The Internet of Things (IoT) is revolutionizing the way we interact with the world around us. MQTT communication between different devices will be illustrated in this article th… Read More
Introduction The air we breathe is a vital resource, but we often take its quality for granted. Gas sensor air monitoring has become a global priority with increasing concerns about air poll… Read More
Introduction In the age of Internet of Things (IoT) and embedded technology, solar power for Arduino and other types of devices (such as, for example, ESP8266 and ESP32) have become a top pr… Read More
Introduction In this article, we will introduce an automatic sprinkler with ESP8266 controlled by Arduino Cloud. In the age of the Internet of Things (IoT), the ability to collect, monitor a… Read More
Introduction In this article we will explore one of the elements of the Arduino Cloud dashboard: the scheduler. We will use this element to command a red LED driven by our ESP8266 NodeMCU. W… Read More
Introduction Welcome to the article dedicated to the creation of an interactive circuit that exploits the potential of Arduino Cloud and the ESP8266, a microcontroller with integrated Wi-Fi… Read More
Introduction The control of the brightness of the LEDs (for example by means of potentiometers) is a fundamental element in the design of electronic systems and in the field of the Internet… Read More
Introduction Welcome to this article where I will walk you step-by-step through a project on how to control a DC motor using an ESP32 and an L298N based H bridge. Follow this comprehensive g… Read More
Introduction If you’re looking to control an SG90 servo motor via Bluetooth, the ESP32 is an ideal solution. The ESP32 is a very powerful microcontroller that offers built-in Bluetooth… Read More
Introduction In this article, we’re going to build a fairly simple project: a system that controls the brightness of an LED based on the ambient brightness. In practice, the lower the… Read More
Introduction Bluetooth is a communication system between devices that is now very widespread. We find it in our cell phones, computers, headphones and all those devices that need to communic… Read More
Introduction In this article we will see how to build a REST API server using an ESP32 NodeMCU. We have already seen an example of what REST APIs are and how to use them in the How to make a… Read More
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 pre… Read More
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. I… 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… Read More
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 be… 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… Read More
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 belove… 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… 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… 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… 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 tim… 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… Read More
Introduction In this tutorial we will see how to make an ultrasonic distance meter. Ultrasounds are acoustic waves having a frequency higher than that audible by humans. The medium crossed b… Read More
Introduction Nowadays making calculations is not a problem at all. A powerful scientific calculator costs a few dollars or can be easily installed on phones or computers.We at Techrm have ho… Read More
Introduction In this tutorial we will see how to solder a 16-pin connector on a 1602A LCD display. You can see all the projects featured in this blog using this display by going to the link… Read More
Introduction This is a simple guide that will teach you how to take the first steps with the BTE13-010 module, a cheap Arduino mini clone. We will go through the 4 basic steps necessary to g… Read More
