4/28/2023 0 Comments Low pass filter 100 hz build![]() The gyro and PID controller have the same problem. ![]() We might say an environment is ‘noisy’ if there is distracting background noise confusing what we want to hear. Noise is a term we hear coming up often, but what exactly is it? When we hear the term ‘noise’, the first thought might be of audible noise we hear with our ears. So when we talk about ‘8k gyro’, that is the sampling rate of 8000 snapshots per second happening inside the gyro to translate the analogue voltage waves into digital data that can be read and processed by the flight controller and flight firmware (eg Betaflight). ![]() The tiny voltage fluctuations are analogue waves, and need to be ‘sampled’ into digital information to be processed in the flight controller main processing unit. A network of these forks are across the 3 different axes of pitch roll and yaw, and they move (the mechanical part) causing tiny fluctuations of voltage (electro part). Inside this surface mount package are a series of nano scale resonating forks, a bit like piano tuning forks. But that unassuming black box contains tiny electro-mechanical parts – hence the name – MEMS stands for ‘Micro Electro Mechanical System’. ![]() ![]() It is easy to take for granted that our flight controller has a digital chip on there called the gyro that senses movement and that’s that. ![]()
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