Think about an electric motor for your 5 (or maybe even 6) inch acro or FPV racing quadcopter. What do you see? Something in a 2205-2306 size range with a KV rating somewhere 2300KV and 2600KV. Sometimes even more. And it works great, as long as you wat 5-inch props and 4S batteries. You can…

FrSky is not making things simple with R9 long range system. New firmware appears quite often and there is no way to flash receivers over the air. You can use some PC software, passthrough from FC and things like that, but from my perspective, as long as you can get to the receiver itself, the…

INAV 2.0 changes a lot. Including OSD. One of the new functions is something called “OSD Profiles”. You can set up 3 independent OSD layouts to radio switches and change them during flight. One OSD profile can display all the data, second one minimal set of data and the third one Map or Radar mode.

As you might have realized, from time to time I’m making an antenna and I have the equipment for it. I’m also strongly considering to produce a small batch of antennas for FrSky R9 long-range radio system since there is a high demand for such antennas. I have made a first small series or FrSky…

Let’s take a look at the new flight controller from Matek designed for airplanes: Matek F411-Wing. Comparing to its older brother (or sister or just a sibling) Matek F405-Wing it is much smaller, lighter and lacks many of the features: 2 UARTs instead of 6 5 servos instead of 7 no SD card slot 3…

When FrSky R9M long range transmitter and FrSky R9 receiver series started to pop up some time ago, there was a lot of speculations “it is any good?” “is it a Team Black Sheep Crossfire killer” “cheap Crossfire alternative?”. In time, new firmware started to appear, new receivers and so on. And oh yes, EU…

FrSky makes radios. Good and very good. Dominates the market. Taranis, Horus and all of them TBS makes bloody good long range 868/915MHz long-range radio system called Crossfire that is commonly used by FrSky radio users FrSky tries to make its own 868/915MHz long-range system called R9 FrSky releases new R9 firmware called Flex, new…

SD cards are cool: cheap, reliable, a lot of space and you can remove them from the drone and read on a PC. But sometimes, it’s really hard to take them out. Either SD slot is in a strange place, or FC is oriented in a strange way or an FC designer has put an…

Oh boy, I had high hopes for iRangeX iRX-IR8M. Got disappointed badly. So, to make it a little better, let’s get our hands dirty and install an external antenna using an SMA pigtail. Maybe it will make this not so cheap s**t a little better! So let’s have a nice talk in a workshop and…