Electronics related posts.
If you've ever used buttons with the Arduino, you may have noticed that the keystrokes were sometimes doubled, and that's where the button debounce comes in. This is because a button works by joining two mechanical elements (contacts), to close the flow of current, which can cause false contacts. Arduino…
This time I bring you a guide about STM32F103 (Bootloader and programming). This microcontroller has the advantage of having more capacity on almost everything compared with an Arduino (ATMega328p), having more SRAM, program memory, ADC and DAC resolution... for a little more money. More info into the Datasheet. STM32F103_datasheetDownload Furthermore…
Today I bring you a module that I have created, which will allow you to create menus for your Arduino and compatible ones, such as ESP8266. Currently it is only compatible with two displays: Nokia 5510 (PCD8544) and those that use the ST77XX chip, with the Adafruit libraries. In the…
Today I bring you a simple trick to improve the analog readings of your Arduino. One of the things you notice when you start using the Arduino and taking analog readings is the fluctuation between measurements due to the sensitivity of the analog pins. In my case, when I noticed…
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…
