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

This post is going to be about a graphical user interface for DIY generator’s display I have talked about earlier. Also, this post will be a short one. Two libraries were used to display the interface. The first one is TFT_eSPI. Although it has its own screen drawing/writing functions, its main purpose is to be … Read more

Today I will talk about several problems I had after designing a custom PCB for an ESP-32 module. This PCB was used in Wi-Fi connected switch used for controlling LED strip Wi-Fi enabled module. The idea was to make a PCB for a Wi-Fi switch. The switch itself was modified commercially available wall switch made … Read more

In this post I am going to continue with the DIY signal generator based on the AD9833 IC where I have left in the previous part. Earlier, I have talked how I had built my first analog signal generator’s stage – variable gain amplification circuit. Usually, a generator needs to have an ability to change … Read more