Drakula 2" HD walksnail build
After receiving my first analog Mobula 8 and breaking the stock ELRS antenna, I began creating and couldn't be stopped.
Here, I share my experience of transitioning from the Mobula 8 to the Drakula (DRAKnight + MobULA) using the Draknight frame from HGLRC with the excellent HD system from Caddx Walksnail Avatar Mini 1S Kit.
Initially, I wasn't sure what to do about the missing ELRS antenna. I soldered a wire in place of the antenna, and it worked wonderfully, allowing the analog Mobula to fly again. However, I started considering switching to digital and realized I needed an external ELRS antenna. To achieve this, I had to solder a UFL connector where the stock antenna was.
I also desoldered the power for the built-in analog VTX. Since this AIO uses SPI for ELRS, I had a free UART which I used to connect a GPS. I experimented with different video antennas, starting with the "green" small antenna, which allowed me to reach a distance of 1 km. However, I felt the drone was still blocking the signal, so I decided to use the stock Walksnail antenna, but I shortened it a bit since it was too long.
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Show stores (3)Guides & Reviews
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That's sweet, with GPS too! How does it fly? It's a lot heavier than a stock mob8
Thanx. Of course, this can't compare to an analog Mobula, but I believe the analog version had too much power for its size, so I cut 30% of the throttle. Now it flies very well; there is a slight prop wash at high throttle (>80%), but it's minor. Regarding the GPS on this build, it's not perfect either. It works, but without a barometer, it struggles to determine the current altitude, and the return to home can take a while. Also, it seems like this processor can't handle GPS rescue well. When it returns home, it looks jerky, as if the PID filters are very poorly tuned.