Projects made with Arduino
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 Arduino Nano ESP32: a practical introduction, it’s time to do something more complex. In this second article on the Arduino Nano ESP32, you will be guided through […]
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” dedicated to this board) with a simple project that makes two LEDs flash independently. In particular, one of the two will flash ON/OFF while the other will gradually
Independent control of two LEDs with Arduino Nano ESP32: a practical introduction 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 priority to ensure continuous operation. Projects distributed in remote locations, far from the electricity grid, require a sustainable and reliable energy source. This
Solar Power for Arduino, ESP8266 and IoT: Complete Guide to Energy Independence 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 »
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 »
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 by the ultrasounds conditions its propagation speed. They are slower in gaseous media and faster in solid media. In air the speed of propagation is
Ultrasonic distance meter with LCD display on Arduino UNO 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 however decided to turn Arduino into a calculator. Ours is a very simple calculator, for example it accepts only integer numbers as input and we