Category Archives: Microcontrollers

SPL vs HAL: which one should you use

STM32CubeMx_front

There is an unending dispute about which library should you use when writing an application for STM32 microcontroller. Actually, there are at least three choices which you should consider. In this post I will highlight the advantages and disadvantages of each approach which can be considered when writing software for ST microcontrollers.

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433MHz receiver and transmitter

Wireless transmission is getting more and more popular. I will try to show you how does it work using coupled receiver and transmitter which are both working on the same frequency (433MHz).

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A small operating system

There are many operating systems: Linux, Windows, iOS,… But there are a few which can work in real time like Linux Xenomai. However, there are very little which can fit a microcontroller. One of them is a FreeRTOS. There are some variations of the FreeRTOS which can handle different conditions and requirements.
This blog post is not about such operating system, however…

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A new controller for QuadroCopter

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Some time ago I have presented my new design a mini QuadroCopter. This new design required a controller but tailored to the size of the mini UAV.

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QuadroCopter test flight

It was quite a long time since I have written something about my QuadroCopter. Well the time has come. I have prepared a shot movie to which I invite you to watch.

Read more for some technicalities about the UAV.

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Making a PCB (Printed Circuit Board) using toner transfer method

imag1478_mini

The purpose of this article is to introduce you to one of the methods of making PCB which is the toner transfer method.

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Servo

A model servo or servomechanism isn’t anything more than just a small DC motor with a transmission and some electronics.

zgraja

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Simple Dual Thermometer

I have done a few project based on AVR microcontrollers. Recently, I have given myself a chance to try out Arduino. After my home thermometer broke down I decided to make a new one. Also it had a few drawback which required fixing. After some time I decided to use Arduino and design a shield for it which would enable this board to measure the temperature and display it. So here it is:

Simple Dual Thermometer

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