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INAV: how to setup asynchronous gyro
This functionality was removed from the code together with INAV 3. Do not try to set it up, it won’t work. Just flash latest INAV and enjoy the flight without any hassle Your Uncle Good Advice Together with version 1.4, INAV introduced asynchronous gyroscope processing. What is async gyro and why it is useful to…
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Simplest hardware inverter for flight controller
Together with increasing popularity of STM32F4 flight controllers, telemetry became hard topic again. Why? Most popular telemetry protocols, SmartPort and FrSky telemetry , requires inverted signal. Zero becomes one, one becomes zero. In case on STM32F3 that was not a big problem. Those CPUs have built in inverters. STM32F1 and STM32F4 does not. So, if…
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Flip32 F4 and Airbot F4 Software Serial
When STM32F4 based flight controllers made its way to the world of MultiWii derivatives (Cleanflight and whole family), all I think all developers assumed that SoftwareSerial feature will not be needed on those boards. Why it should be? STM32F4 has enough hardware UARTs to satisfy everyones needs. Unfortunately, live had it’s own point of view…
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Mastering INAV Accelerometer Calibration – Step-by-Step Guide
One of the most often forgotten tasks required to bring the most of INAV, is good accelerometer calibration. Why? While flight controller software like Betaflight use accelerometer only to compute UAV’s body inclination (Angle and Horizon modes as well as artificial horizon), INAV uses it also for position estimation. INAV not only has to know…
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Yaw unstable at full throttle
Last weekend I’ve experienced quite serious problem with Reptile X4R 220 racing quadcopter: on full throttle quad was loosing stability. At first, it was starting to drift yaw to the right. Then, if throttle was not lowered, roll and pitch was also becoming unstable and quad was doing crazy things in the air. I do…
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Download & Install STM32 Virtual COM Port Driver for Windows
Virtual Com Port, VCP to method of choice for almost all recent flight controllers to connect to PCs. No more onboard USB-to-UART converters like CP2102. SMT32 can work as USB device too after all… But for this, Windows users will require dedicated driver. I have no idea why STMicroelectronics made it so hard do download…
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Marabou Stork: Depron airplanes do not last long
Marabou Stork, my Depron FPV airplane had a bad luck. Few weeks ago, when I was testing development version of INAV, it crashed during take off. Poor accelerometer calibration combined with a software bug resulted in heavy roll 2 meters above ground. As a result, whole front section was smashed. Everything else more less survived.…
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Hobbyking Mini DLG Pro 990mm durability fix
Entry level DLG (Discus Launch Glider) from HobbyKing has a quite important flaw for a “entry” level model: it is not durable. As a matter of fact, it is quite fragile, specially where plastic nose section is attached to composite fuselage tube. It is attached only with 3 small screws, and I can guarantee: every…
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Omnibus F4 Pinout
Omnibus F4 is a new family of All-In-One (AIO) STM32F4 based flight controllers with integrated OSD (On-Screen-Display) for FPV purposes. Basically, it is Airbot F4 / Flip32 F4 with added MAX7456 and some minor tweaks.