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Greenscreener

Jan Černohorský

Hi, I’m Greenscreener or Jan Černohorský, if you prefer my real name. I’m a founding member of Pátek. I am one of the authors of this website and also gbl.cz. I am a keen user of linux and I spend most of my time making web stuff. To my own disgust, the language I’m best at is still JavaScript, but I also write in Python, bash and similar. I really like Go, but I haven’t found the time yet to sit down and properly learn it. I participate in the Czech Cybersecurity Contest, play CTFs and sometimes hack stuff. I like playing with Arduino and other electronics, I often do some 3D printing at school. Sometimes I even make stuff in Blender.

You can find me on Twitter, GitHub, Telegram and find out more about me on my website grsc.cz.

Like what you see? Do you want to join us or just find out what we really do? Come and visit us! You don’t have to be a student of the school, we have members from many different places and we’ll be glad to welcome you too. We meet every friday afternoon, except holidays and other circumstances that force us to stay home. Everybody arrives when they can, the first people come around noon and the last person departs usually around six. Read more

One could call our little group a hackerspace. One of the main advantages of a hackerspace is the availability of tools which would otherwise not be feasible to have at home. Currently, we have a few 3D printers, a CNC router for PCB milling and a stitching machine, and after prior arrangement, we sometimes borrow some of the lab kit that our school owns (obviously under the surveillance of a teacher 😉). Read more

Our grammar school has two Prusa RepRap i3 Mk3 3D printers, which are now managed by four members of Pátek. For that reason, we print almost constantly during our meetings and every member can, with the help of more experienced members, design and then print anything. Most people, however, choose to just download a shitty model from thingiverse and print that. Ordering form Read more

We are a group of students interested not only in IT and programming but also physics, electrical engineering, amateur radio, math, biology and anything interesting in general. Interested in what we do? Join us! Stránky v Češtině 🇨🇿 Read more

While “pátek” is the name of the fifth day of the week in Czech, Pátek is a group of students interested not only in IT and programming but also physics, electrical engineering, amateur radio, math, biology and anything interesting in general. Like the Friday Men met in Karel Čapek’s house every Friday afternoon, we meet every Friday afternoon in one or more classrooms in the grammar school in Brandýs nad Labem after all the sane students have gone home. Read more