White vs blue

A blue LED will output more energy than a white one, in other words you save energy. This is one of the reasons why in some products like head lamps you can find white LED with a blue tint. At the same time, eye sight decreases in space lit up with blue light. I promise …

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“A” is a new “P”

Amateurism is a new professionalism – in some cases it is better to work like an amateur. In programming, loops take more clock cycles than regular instructions. If possible, try to avoid them when working on critical applications. This goes especially for interrupts. If you have to loop a function only a few times just …

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Magnets

Don’t play with them. Are your magnets losing their super powers? If yes, it is probably because you are playing with them (we all do 🙂 ). We need to know that a magnet is made out of lots and lots of little magnets called electrons. When they stand (spin) in the same direction they …

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DIY PC case

My mother is renovating her apartment and she had a wish to have a PC that would go nicely with her new furniture and would be quiet. When I was searching for some nice PC cases there were non that suited her taste, so I thought why not making one myself, after all I am …

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Magic lamp

In this dark and cold winter day we all need a magic lamp. I will update this post when this little project will be finished. Subscribe to our mailing list if you would like to be notified 😉 I promise no spam. 😉

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Timers

Coming soon. Subscribe to our mailing list if you would like to be notified 🙂 I promise no spam. 😉

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I2C – Inter-Integrated Circuit

I2C is a simple communication for connecting different devices which can have a different power supply. It is based on a master-slave relationship. This means that the master or masters (e.g. Arduino) are giving tasks to slaves (other devices) and demanding reports from them. In contrast to I2C there is a popular CAN protocol where …

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PWM read

This is a short continuation of an article about PWM. Here we will upgrade our knowledge and see how microcontrollers read PWM signals. There are some devices such as drone controllers that output a PWM signal which we would like to read. As mentioned in article about PWM, it works based on timers which control …

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PWM – Pulse width modulation

This article is actually from and about a robot called small bit 🙂 PWM is widely used in electrotechnics for lights, chargers, motors, generating different signals, etc. which are all present in robots as well. In short, PWM is a way of expressing analog values in the digital world. Fundamentals You have probably wondered how, …

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