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Low Pass Filter Experiments
All flight controllers we use in RC hobby (FlightOne, Betaflight, INAV, Pixhawk, dRonin, and all the other) use low pass filters. What does a low pass filter do? It passes low-frequency components of a signal (below cutoff frequency) but attenuates high-frequency signal components (above the cutoff frequency). Since it’s hard to make a visualization of…
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Jumper T16 Review – better than FrSky?
Jumper T16 RC transmitter messed around in the RC hobby in the last few weeks. FrSky wants to ban it since according to them it’s a clone of FrSky X10 (bullshit by the way). The question is: is Jumper T16 a good radio transmitter worth the money and what’s more important, is it a real…
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Impedance Matching 101
Why do we match the impendance? And what the heck the impedance really is? 50Ohm, 75Ohm, low impedance, high impedance, reflections and all that crap that normal people usually ignore. Nobody said that we are “normal” over here so let’s take a look at this whole input/output impedance matching business.
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INAV 2.2 – what’s news, what changed, the most important features
INAV 2.2 is almost ready. The list of changes is long, those are the most important ones STM32F7 optimizations. F7 flight controllers are now as fast as F4 Better airmode handling for multirotors Betaflight D_min equivalent called D-Boost Iterm Relax Smart Audio 2.1 New Mission Planner Continue mission on failsafe waypoints in CLI stick arming…
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QmuBeacon – open-source Arduino GPS locator/beacon drone is now public
If too long didn’t watch: it’s a GPS equipped beacon/locator DIY system based on popular radio development boards compatible with Arduino: LoRa32u4 and ESP32 LORA32 working in 868/915MHz band using LoRa modulation. You put a beacon on anything you want to track: airplane, drone, car, boat, wife, husband and use Locator to get distance and…
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Getting started with Long Range flying – not-so-obvious tips
This video is for both fixed wing and quad pilots that think about flying slightly further away than usual and have zero experience. I will skip aspects like hardware setup, RC link and concentrate on not so obvious aspects like knowing your ground, trusting your hardware, wind, OSD, directions, planning and so on.
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Torvol Quad Pitstop Pro drone backpack review
Quad backpack… there are cheap quad backpacks, there are photo backpacks and there are expensive quad backpacks. Currently, I own a quad backpack that belongs to the last category: Torvol Quad Pitstop Pro. After using it for 3 months, it’s time for a review. It’s not an ultimate quad backpack, but probably it is the…
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How to bind FrSky receivers with OpenTX radios: Taranis X9D, Horus X10S and all the other
In today’s “beginners” episodes: how to bind FrSky receivers with OpenTX radios. Almost all receivers: FrSky X8R, X4R, XSR, R-XSR, XM, XM+ but also “long-range” R series like R9, R9 Slim, R9 mini. With all the FrSky (and not only) OpenTX radios: Taranis X9D, Taranis Q7, X-Lite, Horus X10S, Horus X12 and so on… But…
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7 tips and tricks for smooth HD video on 7-inch quads
7 inch quads are great, but they are tricky. It’s much harder to make them fly smoothly than 5-inchers. It’s just more demanding in term of stiffness, propellers, vibrations, jello and so on. After almost one year of fighting with all those issues, here is my list of 7 tips and tricks how to get…