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What are TVS, the Transil Diodes?
We like to think that voltage in electronics is, if not constant, then at least it’s not going above the supply voltage. So if we apply 5V at the input of the electronic device, it will never go unintentionally above 5V inside. It is, however, not true. As soon as you add any type of…
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Matek F765-WSE flight controller preview
Who makes the best fixed-wing flight controllers? Most probably Matek. Their series that begun with Matek F405-WING in 2018 is still going strong. Some models are end-of-line and new ones are created. The Matek F765-WSE is the next generation of Matek WING flight controllers that will appear on the market in late Q3, early Q4…
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7-inch Source One long-range drone flies again
My 7-inch TBS Source One was my first 7-inch drone that flew great. For quite some time it was my favorite and the most advanced FPV drone. However, then I designed and started using Pirx Seven, Source One landed in a closet. The fact that it was not DJI HD FPV system compatible only made…
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How to replace the 3d printer nozzle – Prusa i3 MK3S
The Prusa i3 nozzle is of good quality. If you treat it well, it will serve you for years. My Prusa i3 MK3S was printing without absolutely any problems for more than two years. Unfortunately, some of the failed filament experiments left too much fowling in the nozzle and although it was printing fine most…
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How to protect ESP32 OLED display from cracking
As great as some ESP32 development boards are, they are very far from perfect and many different models can have different problems. Like, for example, ESP32 with an OLED display. If you do not handle those boards very carefully, you will destroy them in no time. The OLED screen is not protected and edges are…
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How to Set Up ImmersionRC Ghost GPS Telemetry for FPV
ImmersionRC Ghost 2.4GHz long-range LoRa based radio system was announced a year ago and is available on the market for only a little shorter. In this time, ImmersionRC put quite an of effort into making it better, but for unknown reasons always ignored one very important aspect of a long-range radio control link: telemetry!
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How to use stepper motors with Arduino
Stepper motors are the workhorse of modern automation and mechatronics. You want something to more and move precisely how much wanted it to move? You use a stepper motor. This is why, we use steppers in cars, robots, all kinds of automation, 3D printers, CNC machines. You name it. The main difference between a stepper…
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Artificial intelligence for developers – GitHub Copilot
Artificial Intelligence, aka Skynet, is very often overhyped by companies and underhyped by developers (there is no AI, it’s just another IF in the code). It does not change the fact, that AI is used in more and more places. Just look at Tesla autonomous pilot. And for years you can hear that very soon…
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DIY motorized camera slider with ESP32 and Arduino
If you go into the video production, even as simple as short videos for YouTube, you will discover that to shoot better B-rolls and add some dynamics to usually static shots (if you do not work with a real cameraman), one could use a camera slider! You can buy one. That is always an option.…
