Virtual Private Networks (VPNs) have become increasingly popular in recent years, touted as essential tools for enhancing online privacy, security, and freedom. By encrypting internet connections and masking IP addresses, VPNs offer users a sense of anonymity and protection from prying eyes, whether it’s ISPs, hackers, or government surveillance agencies. However, while VPNs undoubtedly offer … Read more

There are times, when you have purchased your brand new Single Board Computer like a Raspberry Pi for a headless project and then you realize – you don’t have any monitor laying around for the initial computer setup. But if you have a laptop next to your lap – there might be a solution for … Read more

This blog post should answer (or at least try to) the question, if Fusion 360 could be used for a living space’s interior design. The reason why I decided to make a post about it, because at one point in my life I was searching for a such answer myself. To tell you the truth, … Read more

There are lots of cheap USB-Serial adapters on the market which most of the time are perfect solution if you want to flash a MCU or you need a data connection between a PC and some kind of device with serial interface. But those cheap solutions are not suitable if electrical isolation between a PC … Read more

If you have ever designed your own PCB with ESP12 module on it, probably you have left some kind of a connector to program the module. But what if you don’t want to have an extra connector or you don’t have enough space on a PCB? Then you could use an pogo addon for ESP-12 … Read more

Handful of older generation AVR MCUs needs ISP (In System Programming) connector to flash your own firmware. Usually if you design your own PCB, you will place somewhere 6 pin header (2×3 pins) as ISP connection. Most of the time it makes sense, unless PCB needs to be small especially in its height. In these … Read more

Today’s continuation of a DIY signal generator based on an AD9833 is going to be about a dual rail 12V power supply based on TPS65131 IC. In the previous part I have talked about a 5V dual power supply used to power the variable gain amplifier and other circuity. This dual 12V PSU will be … Read more

This tutorial is going to be a part of all other tutorials where I have talked about custom PCBs: from designing to manufacturing either professionally or at home. This post will cover all the steps needed to design a board using free KiCAD software. Table Of Contents What is KiCAD and why you should use … Read more

This post is going to be a tutorial – how to use LVGL (Light and Versatile Graphics Library) with an ESP-32 microprocessor running Arduino framework. So, I have decided to write about it, because when I tried to learn more about it myself, there wasn’t a lot of information, tutorials and/or examples using the library … Read more