Category Archives: News

Why Cable Colors in Electronics Can Be Misleading

Welcome to my next blog post, today a very short piece about cable colors. In electronics, it is crucial to always check the polarization of cables, especially when dealing with power connections. The color coding can often be misleading, leading to potential issues if not verified correctly. I want to write about why standard assumptions do not always hold true in practical applications. This post covers a specific case involving drone camera power supplies where battery depletion during long flights necessitates external power sources. Through micro USB connections on flight controllers, we supply five volts and ground. However, relying solely on color labels can be dangerous. I will demonstrate how unusual configurations exist compared to standard red and black pairings. Always verifying polarity is essential to prevent equipment damage.

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Is Raspberry Pi launching an official LoRa module

I have come across something interesting. As you might already know, Raspberry Pi subcontract Raspberry Pi Pico modules to be manufactured by JLC PCB. However, recently they launched the possibility to order assembly of RP2350 chips. These are nowhere to be found. But this is not the “big” thing. I have searched through the JLC PCB catalogue and found that there is a LoRa module produced by Raspberry Pi! Does this mean that in near feature they are going to release this wireless module?

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RemoteLab a distributed Hardware-as-a-Service

This blog will be a little bit different from what I usually write about but not entirely. I am very proud of the results of what I did and I would like to share them with you. It is not a secret that I work at Wrocław University of Science and Technology. Apart from my research duties, I also run classes with my students. However, we should start the story from the beginning, that is, in the year 2019. At the dawn of 2019 we had COVID-19 outbreak. It did a lot of change in our lives and daily duties which still ought to be carried out. From the perspective of my university there were a lot of challenges. The lectures could be moved to the digital world pretty easily; however, project or laboratory classes were not that easy to move. They strongly depend on human-to-human interaction, and additionally when you work with hardware, it is even more challenging. What I did and what I will describe below was a way to respond to these difficulties. It involves a lot of hardware and not a small dose of software development.

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