Electronics related posts.
Hello, today I bring you something that I have been wanting to do for a long time. This is a variable power supply with Arduino and a QC3 compatible charger. With it we will get, for example, an output with a voltage range between 3.6v and 20v in steps of…
Hello,This time what I bring you is nothing more than a mini tutorial, about how to install Arduino libraries in the IDE. This manual is mainly to avoid having to be indicating in each post that it is necessary to install a library, the necessary steps to do it. In…
Today I leave you a protection circuit against overload and short circuit, which is homegrown, and can be used to protect power supplies or similar against overvoltage. It's my first circuit, so there will surely be better ones, but you have to start with something: P This circuit can be…
Today I'm going to talk a little bit about regulators, and the differences between linear regulators and switching regulators. Knowing the differences we can choose the regulator that best suits our project. Transistor Zones The first thing I am going to talk about is the transistor zones. Basically, because both…
Hello, in this guide I will teach you how to change the clock speed of our Arduino, so we can do without components, reduce consumption, use it with less voltage, or even overclock our ATMega328p. Originally Arduino works at 16Mhz, but it is possible to change it so that it…
Today I bring you several circuits, which will help you protect your projects against reverse polarity. This will help you avoid damage to your circuit if at any time someone connects the power supply backwards. First I'll start with the most basic diode-based ones, then move on to the relay-based…
Today I bring you a tutorial on how to mount a temperature and humidity sensor with Arduino, using the DHT11 or DHT22 temperature sensor, and the Nokia 5110 display. When doing the project, I focused on consuming as little as possible, since nobody likes having to change the sensor batteries…
Today I bring you how to use on Arduino the display from Nokia 5110 LCD and show graphics. If you missed any of the other two parts, I recommend you take a look. Nokia 5110 LCD Display with Arduino (Part 1)Nokia 5110 LCD and text with Arduino (Part 2) On…
Hello, after bringing you the basic part of how to use the LCD display of the Nokia 5110 on Arduino, today I bring you a second part, in which I will teach you several more functions of the Adafruit library, with which we can display on the Nokia 5110 LCD…
In this guide I am going to show you how to connect a Nokia 5110 LCD display with Arduino to be able to print texts and numbers on it. Among the advantages are consumption, since this display will consume approximately 0.25ma with the light off (15ma with the light on).…
