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LoRa versus FSK modulation signal spectrum
LoRa modulation is a wireless communication technique designed for long-range, low-power data transmission. It is based on Chirp Spread Spectrum (CSS) modulation, which spreads the signal over a wide frequency range, making it robust against interference and noise. This technology is particularly useful for Internet of Things (IoT) applications, where devices need to communicate over…
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Crossbow LRS: first live test that is almost a success
Finally, much later than I originally expected, Crossbow LRS, my DIY medium range RC radio link was used to control something that flies. Not much, and not far. It was only my experimental 6″ GPS Racer quadcopter. And I reached only 350m. Small steps, I had no intention to beat and records after all. Just…
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CC1101 868MHz Wireless Transciever Pinout
CC1101 is another example of modern radio modules. I might not have the receiver sensitivity or LoRa SX1276, but with proper antennas should give more than 1 km of radio transmission. Recently I got a couple of them, so expect some new projects with CC1101 and Arduino. Now, something that took me some time to…
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Standalone Betaflight Configurator, since Chrome Web Store apps are dead
Google finally did what they announced last year: Chrome Packaged Apps for Windows, Mac, and Linux are dead. OK, maybe not 100% dead, but they were removed from search and browse in Chrome Web Store. If you still have link, you can install (no idea for how long tho). So, how to live with that?…
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How FPV looked 2.5 years ago…
A few days ago I went back in time. Or to be more precise I started to browse my photo archive. And I’ve found pictures of my first FPV quadcopter… Oh my… ancient times… Doesn’t it look awkward? At least a little… But this baby was pretty cool to think about it. At least when…
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RaceFlight One Source Code, drama continues
This is the follow up of yesterday entry RaceFlight One source code has been published and what does that mean. Before you continue I suggest reading that post first. Another day, another drama. Or rather the same drama continues. There are two major updates on the topic of RaceFlight source code and team conflict. RS2K…
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RaceFlight One source code has been published and what does that mean
In the beginning of time, there was MultiWii and it was good. But then times moved on and 8bit ATmegas were end-of-line for flight control. So, Baseflight was created. In the beginning, it was supposed to be only a MultiWii port to support STM32f1 flight controllers in a for of Afroflight Naze. And it was…
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Crossbow LRS, I’m still doing this wrong…
Only two weeks ago I thought I solved all my major problems with DIY LoRa RC link. I was wrong. I was able to solve one problem (link unstable due to rouge packets messing up with protocol decoding), but an old problem came up again: PPM input from Taranis is no longer stable. At least…
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EXUAV Y120S drone racing frame: go home designer, you are drunk
Chinesium is amazing. Well, to be precise, not only chinesium manufacturers will do anything just to stand off a little. Just like this little (120mm) quadcopter frame called EXUAV Y120S. Why do I even bother to write about it? Simple: I love crazy designs. Just look at those pictures below: No, it’s not a tricopter.…