Aside from being small, TinyWhoop drones come with ducted propellers that help with flight performance and make them safe to fly indoors. The term “CineWhoop” is actually a modification of TinyWhoop – the small drones that many drone pilots started with. What exactly are CineWhoop drones and what are the advantages of flying one? The History of the CineWhoop This is a very specific and relatively uncommon sub-group of drones that are designed for safe and smooth cinematic recording. With the leaked details of the soon-to-be-released DJI Avata, there has been a surge of interest in CineWhoop drones. Most CineWhoop drones are built in DIY fashion, but pre-built CineWhoops are becoming increasingly more common. They are designed for cinematic filmmaking, particularly in tight spaces and indoors. Usually a higher P gain requires a higher D gain and vice versa.CineWhoop drones are typically small and lightweight drones characterized by ducted propellers and smooth flight. After achieving the ideal D values, you may need to slightly retune the P gain if you made large changes to the initial D values. If freestyle is your preference, boost the D values to increase the smoothness of your quad. If you’re a racer that desires a snappy reactive quad, keep the D gain as low as possible. Once you’ve ascertained the D gain baseline, you need to decide how you want your quad to feel in the air. If D gain is too high you’ll notice a strange warbling noise, quickly reduce the D gain before your motors are damaged. If your quad wobbles rapidly for a short time, you’ve got propwash. You can search for propwash by throttling straight ahead before rapidly turning 180 degrees and flying in the opposite direction to which you started. To find the ‘baseline’ for the D gain firstly increase or decrease D until you find the lowest value at which propwash is minimised. The derivative is a final touch to the tune, used to soften or sharpen the flight characteristics of the drone. This is similar to what happens when the PID loop attempts to accurately react to a stick input This technique is much more efficient than simply kicking the ball because it is less prone to error. Imagine that if after you initially kick the ball you can control its acceleration and deceleration as it rolls, this will allow you to reduce or increase the speed of the ball as it approaches the end point. This is difficult and would require plenty of trial and error to correctly complete the task. If you can only kick the ball once at the start point than an exact force must be exerted on the ball so that it will come to rest at the desired point. Imagine that you must kick a ball so that it comes to rest exactly on a certain point. To understand how the PID loop implements these changes, consider an analogy. By changing the values associated with the PID gains, the performance of the craft can be improved by reducing the frequency of error that occurs during flight. Once the error value is calculated, the proportional, integral and derivative gains are used to calculate and implement a correction to the unwanted error. The purpose of a PID loop is to calculate an error value by comparing a desired input value to a measured process value. “PID” is an acronym for Proportional, Integral and Derivative gains. What are PID’s and why must we tune them?
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