Why can't I buy DJI goggles anymore All of you who tried to buy FPV goggles in the last three months might have noticed that it was not a trivial endeavor. Starting from the last December, the DJI Goggles and Air Units and Caddx Vistas availability was limited. To some extent, it was due to…

Having a broken leg, limited mobility, and paid sick leave have some perks after all. I've finally found some free time to sit on the project I started, I think, two years ago: ESP32, LoRa based GPS beacon, and locator. You know, put it on an airplane and have a way to get the distance…

For years, long-range drones were associated with big and purpose build (mainly lightweight) quadcopters. With at least 7-inch propellers, but true long-range started at 8-inches or more. Times changed, and in the 2020, a new class of long-range FPV quadcopters emerged: light, dead-cat frame, 4-inch propellers, weight around 250g, and with flight times somewhere between…

At first glance, the DJI Digital FPV system is the best thing that happened to the FPV, drones, and airplanes since the LiPo batteries. And yes, DJI FPV is an amazing technology that lets you see so much more and works almost out of the box. It is, however, not perfect and this is my…

Lithium-Polymer (LiPo) batteries dominate the RC hobby. In like 98% of the cases, if you have a drone or RC airplane, or RC car, it is powered by a LiPo battery. The reasons are simple: they are high current capable, fast to charge, and have relatively high energy density. LiPo is, however, not the only…

The question "What is the best flight controller firmware?" pops up here and there from time to time. Some say it's Betaflight. Some say it's Ardupilot. And reality? Reality is often disappointing, and there might be no one answer to that question. Every flight controller firmware has strong and weak sides. Ardupilot sucks on small…

INAV 2.5 introduced rover and boat support. However, INAV setup on tracked vehicles like tanks or with differential steering was never really working like expected. Turning was possible but only in forward or backward movement – throttle had to be not-idle. And that meant that turning in place was not an option. Luckily, the INAV…

Have you heard the news of the month? Apparently, Red Cat Holdings bought Fat Shark. Ha! Yes, the Red Cat that in 2018 wanted to buy your blackbox log and pay for them with their own cryptocurrency and in January 2020 bought Rotor Riot. The question remains if it is good for the hobby or…

ImmersionRC Ghost is the new long-range 2.4GHz radio system that is getting the most traction in the media in the last few days. However, IRC Ghost is not the first 2.4GHz SX1280/SX1281 LoRa based radio system that has hit the market. FlySky FRM302 TX module and FlySky FTR16S AFHDS3 receiver are available since May 2020,…