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
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