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 used together with other protections, … Read more
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 regulators rely on transistors to … Read more
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 works at frequencies between 1Mhz … Read more
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 ones, and lastly I’ll use … Read more
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 on a daily basis. For … Read more
If you work with Google Cloud Platform you may have noticed an instance type called E2. You may be wondering what the difference is with the N1 and how it can help you save, so in this post I will talk about it. Pros and cons: E2 vs N1 The first thing we must know … Read more
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 this occasion I am going … Read more
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 some text. If you don’t … Read more
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). This makes it ideal for … Read more
In this little guide I am going to teach you something basic to be able to debug your program with Serial.print and other commands. If you are a programmer, you will know how important logs are to detect failures in your program, and since in Arduino we do not have a file system, you must … Read more
