Category: Uncategorized

Let’s measure power output from Eachine TX805 that is supposed to be up to 800mW. Well, it is not. It matches the specification only at 200mW and 800mW is just not there. But, well, it’s only $16 and when used at 200mW or 500mW it works quite well. RF power meter can be purchased for…

I love Team BlackSheep Unify Pro series of video transmitters. But they are bloody expensive. $50 for an HV version is way too much in my opinion. Still, I own several of those. Whey on Banggood I’ve found a presale of Eachine TX805 VTX with SmartAudio for $16, I could not resist and I’ve ordered…

The second generation of my 3D printed coaxial dualcopter is here! And this time it works almost as I wanted. Just watch the video On the more technical details: It runs INAV 2.0 with a custom mixer Thrust and yaw control is provided by 2 counter rotating propellers Upper motor is 2205 2300KV with 5×4.5×3…

It’s time to start thinking about INAV 2.1. No, I will not give you any timeline, but I can point two features that are very likely to go into the upcoming INAV release. The first one is Braking Mode for multirotors. I already made a video about it, so you might want to watch it…

When two weeks ago I said that you should only 8 channels when using FrSky SBUS I meant it and you just had to take my word for it. Today a small proof how Betaflight 3.5 feedforward component looks on the Blackbox with 16 channels and 8 channels. Of course, in both cases, RC smoothing…

INAV 2.0 introduced two new OSD modes: Map and Radar. Here is a video describing what are Radar and Map modes in INAV and how you can use them.

What to do when Matek F722-STD flight controller is not booting without connected battery and connection from Configurator is not working? Simple, power GPS and magnetometer from a different pad. All 5V pads are powered only when external power is supplied to the flight controller. Not when power is applied via USB cable. If you…

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…