Goal of the day is exploring the control systems and its main mechanics, but do it all with words. Words? Usually when trying to learn this particular subject there are a lot of equations thrown at me. Each of those is important, and maybe it's not possible to
I'm on a search to find the fastest way someone can write stuff down. Awhile ago I was 100% certain the device I was looking for is something like Kindle Scribe, or Remarkable. So I bought one of those. It's from a different manufacturer though, and
This idea was in my head for quite a while. It actually started from an idea to make a product that i can sell, or at least try to sell. The market does not need any more clocks, however i didn't see much of this kind of clocks.
Lately my YouTube algorithm decide i need to watch a lot of videos about Linus Torvalds, and how Linux was made. That was the start of this blog post. So thank you YouTube. To me, the open source software is so badass when compared to closed source. There is something
Smallest keyboard layout possible is called 40% keyboard. It has about 40 switches, and those are all letters and couple of necessary keys for writing, like space, enter, backspace... In order to make something like that keyboard, a microcontroller with HID capabilities is required. In my case i used STM32F103
Goal of the day is understanding the PI regulator. Before anything there is a great resource that explains PI and other regulators in detail and its: controlsystemsacademy.com t = 0:0.01:10; % Time vector setpoint = 1.0; % Desired value Kp = 2.0; % Proportional gain(how strong the P part
I remember in college, there was one math professor that did the problem examples on the whiteboard, but when he got stuck he will real quick go to his laptop, open GNU Octave and type in a short formula that will solve him the whole problem. And then he would
Even though system control was main subject for me for a while in college, i did not grasp on that subject too well. The main outline is clear to me. We got closed loop and in place of the controller it's possible to put all kinds of controllers.
I found this little rotary encoder. At first i didn't know what that is, it looks like a potentiometer, but pins are weird. The pins are: GND, VCC, MS, DT, CLK It turns out it's a mechanical rotary encoder. What's rotary encoder used for?
Considering how this is my second post on the topic, and the first one didn't go well. I will try to redeem myself by performing a small exploration into how much it costs to make a mechanical keyboard from zero. Now there are some limitations to this. Of
Once i started assembling my own project usually i just went with LCSC electronics, or Mouser electronics. Those two options are the ones everyone talks about and i just took their word. But what if i dig a little deeper. This post will be purely exploratory thinking, because only places
I can remember a long time a go while browsing for videos on YouTube, there were a lot of tutorials on how to assemble mechanical keyboard. I said assemble because I'm pretty sure they didn't use PCB to wire everything. Instead, they built a frame that
Project
Right away i will skip the internals of the DRV8825 chip, and just show the simplest way to set up and run the stepper motor with the driver. However, if someone finds internals of the DRV8825 interesting i found this website that describes it nicely: Pololu - DRV8825 Stepper Motor
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First goal with AS5700 was to track the movement of a stepper motor, but as i dug in tutorial it seems that the IC is not meant for it. It works great for tracking the rotation of the motor shaft, but magnetic encoders are used in those rotating dials that
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On my blog previously i posted a post labeled as an idea for a handheld gaming console just for playing Chess. The goal was to make a gaming console out of ESP32 S3 which is a microcontroller, so it’s not really suitable for gaming console, but microcontroller as itself
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How to make a wireless keyboard? It turns out it's not that easy. The way big manufacturers make wireless keyboards with those little USB dongles is a closed source operation. For example if I want to make a wireless keyboard with USB dongle, that can be achieved, but
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Currently, my ongoing projects are all using some kind of microcontroller, but they are all limited by compute power. For example, I'm currently making a handheld device that runs striped down chess engine, and you can play chess against a bot. That bot is limited by compute power
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Previously there was a post labeled with "idea" about a small device that can measure humidity, temperature and pressure, and it fits on keychain. The goal of this post is to show the process of making a PCB board for that device. Schematic was easy, considering how it
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I wish I had a small device that can fit on a keychain that displays temperature and humidity of the room. Winter is getting to an end and the problem of dry air will soon be over. But in times of warm weather there is problem of high humidity. So
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Considering how dimensions of a Gameboy color D-Pad are nowhere to be found on the internet. A long time ago I bought one of those and never really played it. So I will measure those dimensions myself. There it is. Dimensions of a case are not there, because I did
First thing I found out in researching this idea is that someone made almost same thing I'm trying to do: My idea was to put an epaper display instead of normal LCD. But reality does not end here. On Reddit there is a subreddit called r/Writerdeck. And
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Before this post, there was post labeled as an idea for a clock made from STM32F411, aka Black Pill. In that post I used additional Real Time Clock component to make a clock, however. Turns out STM32F411 has its own RTC integrated in it. I should have noticed that while
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Here I'm talking about programming some of the most popular STM32 boards called Blue pill(STM32F103) and Black pill(STM32F411). First the easiest method there is. ST-Link programming. ST-Link is a small device that looks like USB on one side, and on other side it has exposed pins.
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Will get straight to the point and talk at the end of the post. 1. Enter the footprint editor 2. Create a new footprint library, and name it. 3. On the left side select the library you created, right click, and click "New Footprint". 4. You will be