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 is probably the simplest way of making a PCB at home. Although with this method the board will not look nowhere near to the professionally made ones, it will do its function. Also, because it involves drawing the traces by hand, it is mostly suitable for making PCBs where bigger SMD or Through Hole … Read more
This tutorial is about an UV exposure method for making you own PCBs in home environment. This method allows you to etch boards suitable even for tiny SMD components (except maybe for BGA parts). Although it takes some effort, making PCBs at home allows you to design, make, solder and test prototypes faster than ordering … Read more
Lots of LED strip control circuits use Pulse Width Modulation (PWM) to control light brightness. Although it is quite simple method, it creates (sometimes) unwanted phenomenon called flicker. While usually unnoticed by a human eye, flicker can still cause some discomfort to the individual. To reduce LED flicker, a high PWM frequency or analog control … Read more
This time let us talk about one Sigma DSP (ADAU1401) function – volume control, realized in various ways. From previous part about DSP programming we already know that it is possible to control DSP’s output volume directly from the Sigma Studio’s graphical interface. Of course, this is not a convenient solution, because you will need … 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
When you are making some DIY device, you will approach a point when you will have to decide whether to use of the shelf, prebuilt or fully assembled boards or to make your own. I have already talked about how to make yourself a professionally made board in this DIY generator’s post. Although a professional … Read more
There is not a lot of information on the internet on how to start programming DSP for your DIY audio needs. I will try to show, in my opinion, the easiest and probably one of the cheapest DSP programming setups for a fast start. Table of contents Parts list Software list How to install SigmaStudio … Read more
Finally, it happened – the generator is (kind of) finished. It took a bit of time after the previous post to bring the device to its final state. Quite a lot was done from the last time – mostly it was firmware’s finishing touches. I had to make sure that everything, especially LCD interface, works … Read more
Yet another step towards finishing the DIY generator. As the previous one, this post is also going to be quite short, because there is not much to write about. Electronics devices usually have some kind of enclosure, so no exception is my generator. As it is portable device, the housing needs to be as small … Read more
