-
INAV and Failsafe – especially for FrSky owners (but not only)
You should not trust a guy on YouTube that says that he knows it all OpenTX “no signal” is not the best failsafe setting when FrSky S.BUS devices are used and why Than “Hold” failsafe setting might actually be a better option when S.BUS is used How to setup Failsafe in INAV to have the…
-
How to make 868MHz or 915MHz dipole antennas for FrSky R9 or TBS Crossfire receivers
The correct length of 868/915MHz antennas used by FrSky R9 and TBS Crossfire is: From time to time FrSky has a big problem with cutting their antennas to a correct length. Good thing, you can make your own TBS Crossfire RX antennas for cheap!
-
How much does a propeller weight? Mass vs. moment of inertia
How often, when you watched or read a brushless motor review you’ve heard a sentence like “this motor will not have any problem spinning a heavy propeller” or “this motor is designed for light propellers”. Or “this is a very light propeller”. But what does that really mean? Thanks to our good friend Sir Isaac…
-
The news – INAV 2.1, Betaflight RPM filter, IMU-F goes open source and Matek 4in1 ESC with SerialShot
In this episode of The News INAV 2.1 is here and we have a lot of code waiting for INAV 2.2 Betaflight 4.0 is coming closer and closer together with RPM filter that analyzes RPMs of motors (via ESC telemetry) to set up very narrow notches. What a nice idea! Something very fresh in terms…
-
3D printed FPV tricopter drone
Who could have imagined that tricopters can be so much fun? For sure they are interesting devices that lost a lot of "market" when quadcopters gained extra torque and plenty of reaction moment to do fast yaw turns. Almost no one flies them now. Too bad… And good luck if you want to buy a…
-
iFlight ION Raaange/ION Drive 2506 1250KV Motors
220x motors are the workhorse on the RC hobby right now when it comes down to mini quads. Sometimes they are joined by 230x too. But 2205 and 2206 brushless outrunners have a serious problem that limits their use with propellers bigger than 5 inches. They might still be fine with 6-inch props, but on…
-
Matek F722-SE – brand new flight controller that brings STM32F7 closer to the needs of many
At the beginning of 2018 I’ve stated that Matek F722-STD is the first F7 flight controller that makes sense. Today, I have in front of me I have the first F7 flight controller that has all you need (and more) when 4-in-1 ESC is not what you are looking for. It is Matek F722-SE! STM32F722…
-
Mamba F405 and F40 40A 3-6S 4-in-1 ESC combo hands on
I have to honestly admit, up to the beginning of 2018 summer I was rather against 4-in-1 ESCs and flight controllers combos. The reason was quite simple: 4-in-1 were a rather new thing, had a tendency to burn without a reason and were quite expensive. Pretty much a normal state of a new technology. In…
-
Betaflight 4.0 – improved dynamic filtering on 7 inch quad
The next major release of Betaflight will be 4.0 with new and improved Dynamic Filtering. For now, today I only did a quick test of Betaflight 4.0 running on my TBS Source One 7-inch FPV drone. No tuning, no playing with settings. I only flashed, set modes and radio and that’s all. I pretty much…